Merge remote-tracking branch 'upstream/3.4' into merge-3.4

CMakeLists.txt

@@ -295,8 +295,8 @@ OCV_OPTION(BUILD_ANDROID_EXAMPLES   "Build examples for Android platform"
 OCV_OPTION(BUILD_DOCS               "Create build rules for OpenCV Documentation" OFF  IF (NOT WINRT AND NOT APPLE_FRAMEWORK))
 OCV_OPTION(BUILD_EXAMPLES           "Build all examples"                          OFF )
 OCV_OPTION(BUILD_PACKAGE            "Enables 'make package_source' command"       ON  IF NOT WINRT)
-OCV_OPTION(BUILD_PERF_TESTS         "Build performance tests"                     ON  IF (NOT APPLE_FRAMEWORK) )
-OCV_OPTION(BUILD_TESTS              "Build accuracy & regression tests"           ON  IF (NOT APPLE_FRAMEWORK) )
+OCV_OPTION(BUILD_PERF_TESTS         "Build performance tests"                     NOT INSTALL_CREATE_DISTRIB  IF (NOT APPLE_FRAMEWORK) )
+OCV_OPTION(BUILD_TESTS              "Build accuracy & regression tests"           NOT INSTALL_CREATE_DISTRIB  IF (NOT APPLE_FRAMEWORK) )
 OCV_OPTION(BUILD_WITH_DEBUG_INFO    "Include debug info into release binaries ('OFF' means default settings)" OFF )
 OCV_OPTION(BUILD_WITH_STATIC_CRT    "Enables use of statically linked CRT for statically linked OpenCV" ON IF MSVC )
 OCV_OPTION(BUILD_WITH_DYNAMIC_IPP   "Enables dynamic linking of IPP (only for standalone IPP)" OFF )
@@ -461,6 +461,7 @@ else()
     ocv_update(OPENCV_OTHER_INSTALL_PATH         "${CMAKE_INSTALL_DATAROOTDIR}/opencv4")
     ocv_update(OPENCV_LICENSES_INSTALL_PATH      "${CMAKE_INSTALL_DATAROOTDIR}/licenses/opencv4")
   endif()
+  ocv_update(OPENCV_PYTHON_INSTALL_PATH  "python")
 endif()
 
 ocv_update(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${OPENCV_LIB_INSTALL_PATH}")

cmake/OpenCVDetectInferenceEngine.cmake

@@ -78,9 +78,9 @@ endif()
 
 if(INF_ENGINE_TARGET)
   if(NOT INF_ENGINE_RELEASE)
-    message(WARNING "InferenceEngine version have not been set, 2018R3 will be used by default. Set INF_ENGINE_RELEASE variable if you experience build errors.")
+    message(WARNING "InferenceEngine version have not been set, 2018R4 will be used by default. Set INF_ENGINE_RELEASE variable if you experience build errors.")
   endif()
-  set(INF_ENGINE_RELEASE "2018030000" CACHE STRING "Force IE version, should be in form YYYYAABBCC (e.g. 2018R2.0.2 -> 2018020002)")
+  set(INF_ENGINE_RELEASE "2018040000" CACHE STRING "Force IE version, should be in form YYYYAABBCC (e.g. 2018R2.0.2 -> 2018020002)")
   set_target_properties(${INF_ENGINE_TARGET} PROPERTIES
     INTERFACE_COMPILE_DEFINITIONS "HAVE_INF_ENGINE=1;INF_ENGINE_RELEASE=${INF_ENGINE_RELEASE}"
   )

cmake/OpenCVGenSetupVars.cmake

@@ -43,7 +43,12 @@ else()
 endif()
 file(RELATIVE_PATH OPENCV_PYTHON_DIR_RELATIVE_CMAKECONFIG
     "${CMAKE_INSTALL_PREFIX}/${OPENCV_SETUPVARS_INSTALL_PATH}/" "${CMAKE_INSTALL_PREFIX}/")
-ocv_path_join(OPENCV_PYTHON_DIR_RELATIVE_CMAKECONFIG "${OPENCV_PYTHON_DIR_RELATIVE_CMAKECONFIG}" "python_loader")  # https://github.com/opencv/opencv/pull/12977
+if(IS_ABSOLUTE "${OPENCV_PYTHON_INSTALL_PATH}")
+  set(OPENCV_PYTHON_DIR_RELATIVE_CMAKECONFIG "${OPENCV_PYTHON_INSTALL_PATH}")
+  message(WARNING "CONFIGURATION IS NOT SUPPORTED: validate setupvars script in install directory")
+else()
+  ocv_path_join(OPENCV_PYTHON_DIR_RELATIVE_CMAKECONFIG "${OPENCV_PYTHON_DIR_RELATIVE_CMAKECONFIG}" "${OPENCV_PYTHON_INSTALL_PATH}")
+endif()
 configure_file("${OpenCV_SOURCE_DIR}/cmake/templates/${OPENCV_SETUPVARS_TEMPLATE}" "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/install/${OPENCV_SETUPVARS_FILENAME}" @ONLY)
 install(FILES "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/install/${OPENCV_SETUPVARS_FILENAME}"
     DESTINATION "${OPENCV_SETUPVARS_INSTALL_PATH}"

cmake/OpenCVUtils.cmake

@@ -605,7 +605,9 @@ macro(OCV_OPTION variable description value)
       option(${variable} "${description}" ${__value})
     endif()
   else()
-    if(DEFINED ${variable} AND NOT OPENCV_HIDE_WARNING_UNSUPPORTED_OPTION)
+    if(DEFINED ${variable} AND "${${variable}}"  # emit warnings about turned ON options only.
+        AND NOT (OPENCV_HIDE_WARNING_UNSUPPORTED_OPTION OR "$ENV{OPENCV_HIDE_WARNING_UNSUPPORTED_OPTION}")
+    )
       message(WARNING "Unexpected option: ${variable} (=${${variable}})\nCondition: IF (${__condition})")
     endif()
     if(OPENCV_UNSET_UNSUPPORTED_OPTION)

cmake/templates/setup_vars_win32.cmd.in

@@ -1,18 +1,36 @@
 @ECHO OFF
-SETLOCAL EnableDelayedExpansion
 
 SET "SCRIPT_DIR=%~dp0"
 
 IF NOT DEFINED OPENCV_QUIET ( ECHO Setting vars for OpenCV @OPENCV_VERSION@ )
-SET "PATH=!SCRIPT_DIR!\@OPENCV_LIB_RUNTIME_DIR_RELATIVE_CMAKECONFIG@;%PATH%"
+SET "PATH=%SCRIPT_DIR%\@OPENCV_LIB_RUNTIME_DIR_RELATIVE_CMAKECONFIG@;%PATH%"
 
-IF NOT DEFINED OPENCV_SKIP_PYTHON (
-  SET "PYTHONPATH_OPENCV=!SCRIPT_DIR!\@OPENCV_PYTHON_DIR_RELATIVE_CMAKECONFIG@"
-  IF NOT DEFINED OPENCV_QUIET ( ECHO Append PYTHONPATH: !PYTHONPATH_OPENCV! )
-  SET "PYTHONPATH=!PYTHONPATH_OPENCV!;%PYTHONPATH%"
-)
+IF NOT DEFINED OPENCV_SKIP_PYTHON CALL :SET_PYTHON
 
-IF NOT [%1] == [] (
-  %*
-  EXIT /B !errorlevel!
+SET SCRIPT_DIR=
+
+IF NOT [%1] == [] GOTO :RUN_COMMAND
+
+GOTO :EOF
+
+:RUN_COMMAND
+SET RUN_INTERACTIVE=1
+echo %CMDCMDLINE% | find /i "%~0" >nul
+IF NOT errorlevel 1 set RUN_INTERACTIVE=0
+
+%*
+SET RESULT=%ERRORLEVEL%
+IF %RESULT% NEQ 0 (
+  IF _%RUN_INTERACTIVE%_==_0_ ( IF NOT DEFINED OPENCV_BATCH_MODE ( pause ) )
 )
+EXIT /B %RESULT%
+
+:SET_PYTHON
+SET "PYTHONPATH_OPENCV=%SCRIPT_DIR%\@OPENCV_PYTHON_DIR_RELATIVE_CMAKECONFIG@"
+IF NOT DEFINED OPENCV_QUIET ( ECHO Append PYTHONPATH: %PYTHONPATH_OPENCV% )
+SET "PYTHONPATH=%PYTHONPATH_OPENCV%;%PYTHONPATH%"
+SET PYTHONPATH_OPENCV=
+EXIT /B
+
+
+:EOF

doc/Doxyfile.in

@@ -257,6 +257,7 @@ PREDEFINED             = __cplusplus=1 \
                          CV_SSE2=1 \
                          CV__DEBUG_NS_BEGIN= \
                          CV__DEBUG_NS_END= \
+                         CV_DEPRECATED_EXTERNAL= \
                          CV_DEPRECATED=
 EXPAND_AS_DEFINED      =
 SKIP_FUNCTION_MACROS   = YES

doc/tutorials/dnn/dnn_android/dnn_android.markdown

@@ -12,7 +12,7 @@ Tutorial was written for the following versions of corresponding software:
 
 - Download and install Android Studio from https://developer.android.com/studio.
 
-- Get the latest pre-built OpenCV for Android release from https://github.com/opencv/opencv/releases and unpack it (for example, `opencv-3.4.3-android-sdk.zip`).
+- Get the latest pre-built OpenCV for Android release from https://github.com/opencv/opencv/releases and unpack it (for example, `opencv-3.4.4-android-sdk.zip`).
 
 - Download MobileNet object detection model from https://github.com/chuanqi305/MobileNet-SSD. We need a configuration file `MobileNetSSD_deploy.prototxt` and weights `MobileNetSSD_deploy.caffemodel`.
 

doc/tutorials/introduction/cross_referencing/tutorial_cross_referencing.markdown

@@ -36,14 +36,14 @@ Open your Doxyfile using your favorite text editor and search for the key
 `TAGFILES`. Change it as follows:
 
 @code
-TAGFILES = ./docs/doxygen-tags/opencv.tag=http://docs.opencv.org/3.4.3
+TAGFILES = ./docs/doxygen-tags/opencv.tag=http://docs.opencv.org/4.0.0
 @endcode
 
 If you had other definitions already, you can append the line using a `\`:
 
 @code
 TAGFILES = ./docs/doxygen-tags/libstdc++.tag=https://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen \
-           ./docs/doxygen-tags/opencv.tag=http://docs.opencv.org/3.4.3
+           ./docs/doxygen-tags/opencv.tag=http://docs.opencv.org/4.0.0
 @endcode
 
 Doxygen can now use the information from the tag file to link to the OpenCV

doc/tutorials/videoio/intelperc.markdown

@@ -78,5 +78,5 @@ there are two flags that should be used to set/get property of the needed genera
     flag value is assumed by default if neither of the two possible values of the property is set.
 
 For more information please refer to the example of usage
-[intelperc_capture.cpp](https://github.com/opencv/opencv/tree/master/samples/cpp/intelperc_capture.cpp)
+[videocapture_intelperc.cpp](https://github.com/opencv/opencv/tree/master/samples/cpp/videocapture_intelperc.cpp)
 in opencv/samples/cpp folder.

doc/tutorials/videoio/kinect_openni.markdown

@@ -134,5 +134,5 @@ property. The following properties of cameras available through OpenNI interface
     -   CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION = CAP_OPENNI_DEPTH_GENERATOR + CAP_PROP_OPENNI_REGISTRATION
 
 For more information please refer to the example of usage
-[openni_capture.cpp](https://github.com/opencv/opencv/tree/master/samples/cpp/openni_capture.cpp) in
+[videocapture_openni.cpp](https://github.com/opencv/opencv/tree/master/samples/cpp/videocapture_openni.cpp) in
 opencv/samples/cpp folder.

modules/core/CMakeLists.txt

@@ -86,3 +86,47 @@ ocv_add_accuracy_tests()
 ocv_add_perf_tests()
 
 ocv_install_3rdparty_licenses(SoftFloat "${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/SoftFloat/COPYING.txt")
+
+
+# generate data (samples data) config file
+set(OPENCV_DATA_CONFIG_FILE "${CMAKE_BINARY_DIR}/opencv_data_config.hpp")
+set(OPENCV_DATA_CONFIG_STR "")
+
+if(CMAKE_INSTALL_PREFIX)
+  set(OPENCV_DATA_CONFIG_STR "${OPENCV_DATA_CONFIG_STR}
+#define OPENCV_INSTALL_PREFIX \"${CMAKE_INSTALL_PREFIX}\"
+")
+endif()
+if(OPENCV_OTHER_INSTALL_PATH)
+  set(OPENCV_DATA_CONFIG_STR "${OPENCV_DATA_CONFIG_STR}
+#define OPENCV_DATA_INSTALL_PATH \"${OPENCV_OTHER_INSTALL_PATH}\"
+")
+endif()
+
+set(OPENCV_DATA_CONFIG_STR "${OPENCV_DATA_CONFIG_STR}
+#define OPENCV_BUILD_DIR \"${CMAKE_BINARY_DIR}\"
+")
+
+file(RELATIVE_PATH SOURCE_DIR_RELATIVE ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR})
+set(OPENCV_DATA_CONFIG_STR "${OPENCV_DATA_CONFIG_STR}
+#define OPENCV_DATA_BUILD_DIR_SEARCH_PATHS \\
+    \"${SOURCE_DIR_RELATIVE}/\"
+")
+
+if(WIN32)
+  file(RELATIVE_PATH INSTALL_DATA_DIR_RELATIVE "${CMAKE_INSTALL_PREFIX}/${OPENCV_BIN_INSTALL_PATH}" "${CMAKE_INSTALL_PREFIX}/${OPENCV_OTHER_INSTALL_PATH}")
+else()
+  file(RELATIVE_PATH INSTALL_DATA_DIR_RELATIVE "${CMAKE_INSTALL_PREFIX}/${OPENCV_LIB_INSTALL_PATH}" "${CMAKE_INSTALL_PREFIX}/${OPENCV_OTHER_INSTALL_PATH}")
+endif()
+list(APPEND OPENCV_INSTALL_DATA_DIR_RELATIVE "${INSTALL_DATA_DIR_RELATIVE}")
+string(REPLACE ";" "\",\\\n    \"" OPENCV_INSTALL_DATA_DIR_RELATIVE_STR "\"${OPENCV_INSTALL_DATA_DIR_RELATIVE}\"")
+set(OPENCV_DATA_CONFIG_STR "${OPENCV_DATA_CONFIG_STR}
+#define OPENCV_INSTALL_DATA_DIR_RELATIVE ${OPENCV_INSTALL_DATA_DIR_RELATIVE_STR}
+")
+
+if(EXISTS "${OPENCV_DATA_CONFIG_FILE}")
+  file(READ "${OPENCV_DATA_CONFIG_FILE}" __content)
+endif()
+if(NOT OPENCV_DATA_CONFIG_STR STREQUAL "${__content}")
+  file(WRITE "${OPENCV_DATA_CONFIG_FILE}" "${OPENCV_DATA_CONFIG_STR}")
+endif()

modules/core/include/opencv2/core.hpp

@@ -75,6 +75,7 @@
         @defgroup core_utils_sse SSE utilities
         @defgroup core_utils_neon NEON utilities
         @defgroup core_utils_softfloat Softfloat support
+        @defgroup core_utils_samples Utility functions for OpenCV samples
     @}
     @defgroup core_opengl OpenGL interoperability
     @defgroup core_ipp Intel IPP Asynchronous C/C++ Converters

modules/core/include/opencv2/core/cvdef.h

@@ -349,6 +349,15 @@ Cv64suf;
 #  endif
 #endif
 
+#ifndef CV_DEPRECATED_EXTERNAL
+#  if defined(__OPENCV_BUILD)
+#    define CV_DEPRECATED_EXTERNAL /* nothing */
+#  else
+#    define CV_DEPRECATED_EXTERNAL CV_DEPRECATED
+#  endif
+#endif
+
+
 #ifndef CV_EXTERN_C
 #  ifdef __cplusplus
 #    define CV_EXTERN_C extern "C"

modules/core/include/opencv2/core/hal/intrin_avx.hpp

@@ -1363,25 +1363,22 @@ inline v_float64x4 v_cvt_f64_high(const v_float32x8& a)
 
 inline v_int32x8 v_lut(const int* tab, const v_int32x8& idxvec)
 {
-    int CV_DECL_ALIGNED(32) idx[8];
-    v_store_aligned(idx, idxvec);
-    return v_int32x8(_mm256_setr_epi32(tab[idx[0]], tab[idx[1]], tab[idx[2]], tab[idx[3]],
-                                       tab[idx[4]], tab[idx[5]], tab[idx[6]], tab[idx[7]]));
+    return v_int32x8(_mm256_i32gather_epi32(tab, idxvec.val, 4));
+}
+
+inline v_uint32x8 v_lut(const unsigned* tab, const v_int32x8& idxvec)
+{
+    return v_reinterpret_as_u32(v_lut((const int *)tab, idxvec));
 }
 
 inline v_float32x8 v_lut(const float* tab, const v_int32x8& idxvec)
 {
-    int CV_DECL_ALIGNED(32) idx[8];
-    v_store_aligned(idx, idxvec);
-    return v_float32x8(_mm256_setr_ps(tab[idx[0]], tab[idx[1]], tab[idx[2]], tab[idx[3]],
-                                      tab[idx[4]], tab[idx[5]], tab[idx[6]], tab[idx[7]]));
+    return v_float32x8(_mm256_i32gather_ps(tab, idxvec.val, 4));
 }
 
 inline v_float64x4 v_lut(const double* tab, const v_int32x8& idxvec)
 {
-    int CV_DECL_ALIGNED(32) idx[8];
-    v_store_aligned(idx, idxvec);
-    return v_float64x4(_mm256_setr_pd(tab[idx[0]], tab[idx[1]], tab[idx[2]], tab[idx[3]]));
+    return v_float64x4(_mm256_i32gather_pd(tab, _mm256_castsi256_si128(idxvec.val), 8));
 }
 
 inline void v_lut_deinterleave(const float* tab, const v_int32x8& idxvec, v_float32x8& x, v_float32x8& y)

modules/core/include/opencv2/core/private.hpp

@@ -794,6 +794,82 @@ CV_EXPORTS InstrNode*   getCurrentNode();
 #define CV_INSTRUMENT_REGION(); CV_INSTRUMENT_REGION_();
 #endif
 
+namespace cv {
+
+namespace utils {
+
+//! @addtogroup core_utils
+//! @{
+
+/** @brief Try to find requested data file
+
+Search directories:
+
+1. Directories passed via `addDataSearchPath()`
+2. Check path specified by configuration parameter with "_HINT" suffix (name of environment variable).
+3. Check path specified by configuration parameter (name of environment variable).
+   If parameter value is not empty and nothing is found then stop searching.
+4. Detects build/install path based on:
+   a. current working directory (CWD)
+   b. and/or binary module location (opencv_core/opencv_world, doesn't work with static linkage)
+5. Scan `<source>/{,data}` directories if build directory is detected or the current directory is in source tree.
+6. Scan `<install>/share/OpenCV` directory if install directory is detected.
+
+@param relative_path Relative path to data file
+@param required Specify "file not found" handling.
+       If true, function prints information message and raises cv::Exception.
+       If false, function returns empty result
+@param configuration_parameter specify configuration parameter name. Default NULL value means "OPENCV_DATA_PATH".
+@return Returns path (absolute or relative to the current directory) or empty string if file is not found
+
+@note Implementation is not thread-safe.
+*/
+CV_EXPORTS
+cv::String findDataFile(const cv::String& relative_path, bool required = true,
+                        const char* configuration_parameter = NULL);
+
+/** @overload
+@param relative_path Relative path to data file
+@param configuration_parameter specify configuration parameter name. Default NULL value means "OPENCV_DATA_PATH".
+@param search_paths override addDataSearchPath() settings.
+@param subdir_paths override addDataSearchSubDirectory() settings.
+@return Returns path (absolute or relative to the current directory) or empty string if file is not found
+
+@note Implementation is not thread-safe.
+*/
+CV_EXPORTS
+cv::String findDataFile(const cv::String& relative_path,
+                        const char* configuration_parameter,
+                        const std::vector<String>* search_paths,
+                        const std::vector<String>* subdir_paths);
+
+/** @brief Override default search data path by adding new search location
+
+Use this only to override default behavior
+Passed paths are used in LIFO order.
+
+@param path Path to used samples data
+
+@note Implementation is not thread-safe.
+*/
+CV_EXPORTS void addDataSearchPath(const cv::String& path);
+
+/** @brief Append default search data sub directory
+
+General usage is to add OpenCV modules name (`<opencv_contrib>/modules/<name>/data` -> `modules/<name>/data` + `<name>/data`).
+Passed subdirectories are used in LIFO order.
+
+@param subdir samples data sub directory
+
+@note Implementation is not thread-safe.
+*/
+CV_EXPORTS void addDataSearchSubDirectory(const cv::String& subdir);
+
+//! @}
+
+} // namespace utils
+} // namespace cv
+
 //! @endcond
 
 #endif // OPENCV_CORE_PRIVATE_HPP

modules/core/include/opencv2/core/utility.hpp

@@ -1234,8 +1234,75 @@ enum FLAGS
 CV_EXPORTS void       setFlags(FLAGS modeFlags);
 static inline void    setFlags(int modeFlags) { setFlags((FLAGS)modeFlags); }
 CV_EXPORTS FLAGS      getFlags();
+
+} // namespace instr
+
+
+namespace samples {
+
+//! @addtogroup core_utils_samples
+// This section describes utility functions for OpenCV samples.
+//
+// @note Implementation of these utilities is not thread-safe.
+//
+//! @{
+
+/** @brief Try to find requested data file
+
+Search directories:
+
+1. Directories passed via `addSamplesDataSearchPath()`
+2. OPENCV_SAMPLES_DATA_PATH_HINT environment variable
+3. OPENCV_SAMPLES_DATA_PATH environment variable
+   If parameter value is not empty and nothing is found then stop searching.
+4. Detects build/install path based on:
+   a. current working directory (CWD)
+   b. and/or binary module location (opencv_core/opencv_world, doesn't work with static linkage)
+5. Scan `<source>/{,data,samples/data}` directories if build directory is detected or the current directory is in source tree.
+6. Scan `<install>/share/OpenCV` directory if install directory is detected.
+
+@see cv::utils::findDataFile
+
+@param relative_path Relative path to data file
+@param required Specify "file not found" handling.
+       If true, function prints information message and raises cv::Exception.
+       If false, function returns empty result
+@param silentMode Disables messages
+@return Returns path (absolute or relative to the current directory) or empty string if file is not found
+*/
+CV_EXPORTS_W cv::String findFile(const cv::String& relative_path, bool required = true, bool silentMode = false);
+
+CV_EXPORTS_W cv::String findFileOrKeep(const cv::String& relative_path, bool silentMode = false);
+
+inline cv::String findFileOrKeep(const cv::String& relative_path, bool silentMode)
+{
+    cv::String res = findFile(relative_path, false, silentMode);
+    if (res.empty())
+        return relative_path;
+    return res;
 }
 
+/** @brief Override search data path by adding new search location
+
+Use this only to override default behavior
+Passed paths are used in LIFO order.
+
+@param path Path to used samples data
+*/
+CV_EXPORTS_W void addSamplesDataSearchPath(const cv::String& path);
+
+/** @brief Append samples search data sub directory
+
+General usage is to add OpenCV modules name (`<opencv_contrib>/modules/<name>/samples/data` -> `<name>/samples/data` + `modules/<name>/samples/data`).
+Passed subdirectories are used in LIFO order.
+
+@param subdir samples data sub directory
+*/
+CV_EXPORTS_W void addSamplesDataSearchSubDirectory(const cv::String& subdir);
+
+//! @}
+} // namespace samples
+
 namespace utils {
 
 CV_EXPORTS int getThreadID();

modules/core/include/opencv2/core/utils/filesystem.hpp

@@ -16,6 +16,13 @@ CV_EXPORTS void remove_all(const cv::String& path);
 
 CV_EXPORTS cv::String getcwd();
 
+/** @brief Converts path p to a canonical absolute path
+ * Symlinks are processed if there is support for them on running platform.
+ *
+ * @param path input path. Target file/directory should exist.
+ */
+CV_EXPORTS cv::String canonical(const cv::String& path);
+
 /** Join path components */
 CV_EXPORTS cv::String join(const cv::String& base, const cv::String& path);
 

modules/core/src/batch_distance.cpp

@@ -297,19 +297,21 @@ void cv::batchDistance( InputArray _src1, InputArray _src2,
         nidx = Scalar::all(-1);
     }
 
+
     if( crosscheck )
     {
         CV_Assert( K == 1 && update == 0 && mask.empty() );
         CV_Assert(!nidx.empty());
-        Mat tdist, tidx;
+        Mat tdist, tidx, sdist, sidx;
         batchDistance(src2, src1, tdist, dtype, tidx, normType, K, mask, 0, false);
+        batchDistance(src1, src2, sdist, dtype, sidx, normType, K, mask, 0, false);
 
         // if an idx-th element from src1 appeared to be the nearest to i-th element of src2,
         // we update the minimum mutual distance between idx-th element of src1 and the whole src2 set.
         // As a result, if nidx[idx] = i*, it means that idx-th element of src1 is the nearest
         // to i*-th element of src2 and i*-th element of src2 is the closest to idx-th element of src1.
         // If nidx[idx] = -1, it means that there is no such ideal couple for it in src2.
-        // This O(N) procedure is called cross-check and it helps to eliminate some false matches.
+        // This O(2N) procedure is called cross-check and it helps to eliminate some false matches.
         if( dtype == CV_32S )
         {
             for( int i = 0; i < tdist.rows; i++ )
@@ -336,6 +338,13 @@ void cv::batchDistance( InputArray _src1, InputArray _src2,
                 }
             }
         }
+        for( int i = 0; i < sdist.rows; i++ )
+        {
+            if( tidx.at<int>(sidx.at<int>(i)) != i )
+            {
+                nidx.at<int>(i) = -1;
+            }
+        }
         return;
     }
 

modules/core/src/copy.cpp

@@ -1183,9 +1183,9 @@ void cv::copyMakeBorder( InputArray _src, OutputArray _dst, int top, int bottom,
 {
     CV_INSTRUMENT_REGION();
 
-    CV_Assert( top >= 0 && bottom >= 0 && left >= 0 && right >= 0 );
+    CV_Assert( top >= 0 && bottom >= 0 && left >= 0 && right >= 0 && _src.dims() <= 2);
 
-    CV_OCL_RUN(_dst.isUMat() && _src.dims() <= 2,
+    CV_OCL_RUN(_dst.isUMat(),
                ocl_copyMakeBorder(_src, _dst, top, bottom, left, right, borderType, value))
 
     Mat src = _src.getMat();

modules/core/src/matmul.cpp

@@ -1699,7 +1699,7 @@ transform_( const T* src, T* dst, const WT* m, int len, int scn, int dcn )
     }
 }
 
-#if CV_SIMD128
+#if CV_SIMD128 && !defined(__aarch64__)
 static inline void
 load3x3Matrix(const float* m, v_float32x4& m0, v_float32x4& m1, v_float32x4& m2, v_float32x4& m3)
 {
@@ -1708,7 +1708,9 @@ load3x3Matrix(const float* m, v_float32x4& m0, v_float32x4& m1, v_float32x4& m2,
     m2 = v_float32x4(m[2], m[6], m[10], 0);
     m3 = v_float32x4(m[3], m[7], m[11], 0);
 }
+#endif
 
+#if CV_SIMD128
 static inline v_int16x8
 v_matmulvec(const v_int16x8 &v0, const v_int16x8 &m0, const v_int16x8 &m1, const v_int16x8 &m2, const v_int32x4 &m3, const int BITS)
 {

modules/core/src/utils/datafile.cpp

@@ -0,0 +1,398 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+
+#include "../precomp.hpp"
+
+#include "opencv_data_config.hpp"
+
+#include <vector>
+#include <fstream>
+
+#include <opencv2/core/utils/logger.defines.hpp>
+#undef CV_LOG_STRIP_LEVEL
+#define CV_LOG_STRIP_LEVEL CV_LOG_LEVEL_VERBOSE + 1
+#include "opencv2/core/utils/logger.hpp"
+#include "opencv2/core/utils/filesystem.hpp"
+
+#include <opencv2/core/utils/configuration.private.hpp>
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#undef small
+#undef min
+#undef max
+#undef abs
+#elif defined(__APPLE__)
+#include <TargetConditionals.h>
+#if TARGET_OS_MAC
+#include <dlfcn.h>
+#endif
+#endif
+
+namespace cv { namespace utils {
+
+static cv::Ptr< std::vector<cv::String> > g_data_search_path;
+static cv::Ptr< std::vector<cv::String> > g_data_search_subdir;
+
+static std::vector<cv::String>& _getDataSearchPath()
+{
+    if (g_data_search_path.empty())
+        g_data_search_path.reset(new std::vector<cv::String>());
+    return *(g_data_search_path.get());
+}
+
+static std::vector<cv::String>& _getDataSearchSubDirectory()
+{
+    if (g_data_search_subdir.empty())
+    {
+        g_data_search_subdir.reset(new std::vector<cv::String>());
+        g_data_search_subdir->push_back("data");
+        g_data_search_subdir->push_back("");
+    }
+    return *(g_data_search_subdir.get());
+}
+
+
+CV_EXPORTS void addDataSearchPath(const cv::String& path)
+{
+    if (utils::fs::isDirectory(path))
+        _getDataSearchPath().push_back(path);
+}
+CV_EXPORTS void addDataSearchSubDirectory(const cv::String& subdir)
+{
+    _getDataSearchSubDirectory().push_back(subdir);
+}
+
+static bool isPathSep(char c)
+{
+    return c == '/' || c == '\\';
+}
+static bool isSubDirectory_(const cv::String& base_path, const cv::String& path)
+{
+    size_t N = base_path.size();
+    if (N == 0)
+        return false;
+    if (isPathSep(base_path[N - 1]))
+        N--;
+    if (path.size() < N)
+        return false;
+    for (size_t i = 0; i < N; i++)
+    {
+        if (path[i] == base_path[i])
+            continue;
+        if (isPathSep(path[i]) && isPathSep(base_path[i]))
+            continue;
+        return false;
+    }
+    size_t M = path.size();
+    if (M > N)
+    {
+        if (!isPathSep(path[N]))
+            return false;
+    }
+    return true;
+}
+static bool isSubDirectory(const cv::String& base_path, const cv::String& path)
+{
+    bool res = isSubDirectory_(base_path, path);
+    CV_LOG_VERBOSE(NULL, 0, "isSubDirectory(): base: " << base_path << "  path: " << path << "  => result: " << (res ? "TRUE" : "FALSE"));
+    return res;
+}
+
+static cv::String getModuleLocation(const void* addr)
+{
+    CV_UNUSED(addr);
+#ifdef _WIN32
+    HMODULE m = 0;
+#if _WIN32_WINNT >= 0x0501
+    ::GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+        reinterpret_cast<LPCTSTR>(addr),
+        &m);
+#endif
+    if (m)
+    {
+        char path[MAX_PATH];
+        const size_t path_size = sizeof(path)/sizeof(*path);
+        size_t sz = GetModuleFileNameA(m, path, path_size); // no unicode support
+        if (sz > 0 && sz < path_size)
+        {
+            path[sz] = '\0';
+            return cv::String(path);
+        }
+    }
+#elif defined(__linux__)
+    std::ifstream fs("/proc/self/maps");
+    std::string line;
+    while (std::getline(fs, line, '\n'))
+    {
+        long long int addr_begin = 0, addr_end = 0;
+        if (2 == sscanf(line.c_str(), "%llx-%llx", &addr_begin, &addr_end))
+        {
+            if ((intptr_t)addr >= (intptr_t)addr_begin && (intptr_t)addr < (intptr_t)addr_end)
+            {
+                size_t pos = line.rfind("  "); // 2 spaces
+                if (pos == cv::String::npos)
+                    pos = line.rfind(' '); // 1 spaces
+                else
+                    pos++;
+                if (pos == cv::String::npos)
+                {
+                    CV_LOG_DEBUG(NULL, "Can't parse module path: '" << line << '\'');
+                }
+                return line.substr(pos + 1);
+            }
+        }
+    }
+#elif defined(__APPLE__)
+# if TARGET_OS_MAC
+    Dl_info info;
+    if (0 != dladdr(addr, &info))
+    {
+        return cv::String(info.dli_fname);
+    }
+# endif
+#else
+    // not supported, skip
+#endif
+    return cv::String();
+}
+
+cv::String findDataFile(const cv::String& relative_path,
+                        const char* configuration_parameter,
+                        const std::vector<String>* search_paths,
+                        const std::vector<String>* subdir_paths)
+{
+    configuration_parameter = configuration_parameter ? configuration_parameter : "OPENCV_DATA_PATH";
+    CV_LOG_DEBUG(NULL, cv::format("utils::findDataFile('%s', %s)", relative_path.c_str(), configuration_parameter));
+
+#define TRY_FILE_WITH_PREFIX(prefix) \
+{ \
+    cv::String path = utils::fs::join(prefix, relative_path); \
+    CV_LOG_DEBUG(NULL, cv::format("... Line %d: trying open '%s'", __LINE__, path.c_str())); \
+    FILE* f = fopen(path.c_str(), "rb"); \
+    if(f) { \
+        fclose(f); \
+        return path; \
+    } \
+}
+
+
+    // Step 0: check current directory or absolute path at first
+    TRY_FILE_WITH_PREFIX("");
+
+
+    // Step 1
+    const std::vector<cv::String>& search_path = search_paths ? *search_paths : _getDataSearchPath();
+    for(size_t i = search_path.size(); i > 0; i--)
+    {
+        const cv::String& prefix = search_path[i - 1];
+        TRY_FILE_WITH_PREFIX(prefix);
+    }
+
+    const std::vector<cv::String>& search_subdir = subdir_paths ? *subdir_paths : _getDataSearchSubDirectory();
+
+
+    // Step 2
+    const cv::String configuration_parameter_s(configuration_parameter ? configuration_parameter : "");
+    const cv::utils::Paths& search_hint = configuration_parameter_s.empty() ? cv::utils::Paths()
+                                          : getConfigurationParameterPaths((configuration_parameter_s + "_HINT").c_str());
+    for (size_t k = 0; k < search_hint.size(); k++)
+    {
+        cv::String datapath = search_hint[k];
+        if (datapath.empty())
+            continue;
+        if (utils::fs::isDirectory(datapath))
+        {
+            CV_LOG_DEBUG(NULL, "utils::findDataFile(): trying " << configuration_parameter << "_HINT=" << datapath);
+            for(size_t i = search_subdir.size(); i > 0; i--)
+            {
+                const cv::String& subdir = search_subdir[i - 1];
+                cv::String prefix = utils::fs::join(datapath, subdir);
+                TRY_FILE_WITH_PREFIX(prefix);
+            }
+        }
+        else
+        {
+            CV_LOG_WARNING(NULL, configuration_parameter << "_HINT is specified but it is not a directory: " << datapath);
+        }
+    }
+
+
+    // Step 3
+    const cv::utils::Paths& override_paths = configuration_parameter_s.empty() ? cv::utils::Paths()
+                                           : getConfigurationParameterPaths(configuration_parameter);
+    for (size_t k = 0; k < override_paths.size(); k++)
+    {
+        cv::String datapath = override_paths[k];
+        if (datapath.empty())
+            continue;
+        if (utils::fs::isDirectory(datapath))
+        {
+            CV_LOG_DEBUG(NULL, "utils::findDataFile(): trying " << configuration_parameter << "=" << datapath);
+            for(size_t i = search_subdir.size(); i > 0; i--)
+            {
+                const cv::String& subdir = search_subdir[i - 1];
+                cv::String prefix = utils::fs::join(datapath, subdir);
+                TRY_FILE_WITH_PREFIX(prefix);
+            }
+        }
+        else
+        {
+            CV_LOG_WARNING(NULL, configuration_parameter << " is specified but it is not a directory: " << datapath);
+        }
+    }
+    if (!override_paths.empty())
+    {
+        CV_LOG_INFO(NULL, "utils::findDataFile(): can't find data file via " << configuration_parameter << " configuration override: " << relative_path);
+        return cv::String();
+    }
+
+
+    // Steps: 4, 5, 6
+    cv::String cwd = utils::fs::getcwd();
+    cv::String build_dir(OPENCV_BUILD_DIR);
+    bool has_tested_build_directory = false;
+    if (isSubDirectory(build_dir, cwd) || isSubDirectory(utils::fs::canonical(build_dir), utils::fs::canonical(cwd)))
+    {
+        CV_LOG_DEBUG(NULL, "utils::findDataFile(): the current directory is build sub-directory: " << cwd);
+        const char* build_subdirs[] = { OPENCV_DATA_BUILD_DIR_SEARCH_PATHS };
+        for (size_t k = 0; k < sizeof(build_subdirs)/sizeof(build_subdirs[0]); k++)
+        {
+            CV_LOG_DEBUG(NULL, "utils::findDataFile(): <build>/" << build_subdirs[k]);
+            cv::String datapath = utils::fs::join(build_dir, build_subdirs[k]);
+            if (utils::fs::isDirectory(datapath))
+            {
+                for(size_t i = search_subdir.size(); i > 0; i--)
+                {
+                    const cv::String& subdir = search_subdir[i - 1];
+                    cv::String prefix = utils::fs::join(datapath, subdir);
+                    TRY_FILE_WITH_PREFIX(prefix);
+                }
+            }
+        }
+        has_tested_build_directory = true;
+    }
+
+    cv::String source_dir;
+    cv::String try_source_dir = cwd;
+    for (int levels = 0; levels < 3; ++levels)
+    {
+        if (utils::fs::exists(utils::fs::join(try_source_dir, "modules/core/include/opencv2/core/version.hpp")))
+        {
+            source_dir = try_source_dir;
+            break;
+        }
+        try_source_dir = utils::fs::join(try_source_dir, "/..");
+    }
+    if (!source_dir.empty())
+    {
+        CV_LOG_DEBUG(NULL, "utils::findDataFile(): the current directory is source sub-directory: " << source_dir);
+        CV_LOG_DEBUG(NULL, "utils::findDataFile(): <source>" << source_dir);
+        cv::String datapath = source_dir;
+        if (utils::fs::isDirectory(datapath))
+        {
+            for(size_t i = search_subdir.size(); i > 0; i--)
+            {
+                const cv::String& subdir = search_subdir[i - 1];
+                cv::String prefix = utils::fs::join(datapath, subdir);
+                TRY_FILE_WITH_PREFIX(prefix);
+            }
+        }
+    }
+
+    cv::String module_path = getModuleLocation((void*)getModuleLocation);  // use code addr, doesn't work with static linkage!
+    CV_LOG_DEBUG(NULL, "Detected module path: '" << module_path << '\'');
+
+    if (!has_tested_build_directory &&
+        (isSubDirectory(build_dir, module_path) || isSubDirectory(utils::fs::canonical(build_dir), utils::fs::canonical(module_path)))
+    )
+    {
+        CV_LOG_DEBUG(NULL, "utils::findDataFile(): the binary module directory is build sub-directory: " << module_path);
+        const char* build_subdirs[] = { OPENCV_DATA_BUILD_DIR_SEARCH_PATHS };
+        for (size_t k = 0; k < sizeof(build_subdirs)/sizeof(build_subdirs[0]); k++)
+        {
+            CV_LOG_DEBUG(NULL, "utils::findDataFile(): <build>/" << build_subdirs[k]);
+            cv::String datapath = utils::fs::join(build_dir, build_subdirs[k]);
+            if (utils::fs::isDirectory(datapath))
+            {
+                for(size_t i = search_subdir.size(); i > 0; i--)
+                {
+                    const cv::String& subdir = search_subdir[i - 1];
+                    cv::String prefix = utils::fs::join(datapath, subdir);
+                    TRY_FILE_WITH_PREFIX(prefix);
+                }
+            }
+        }
+    }
+
+#if defined OPENCV_INSTALL_DATA_DIR_RELATIVE
+    if (!module_path.empty())  // require module path
+    {
+        size_t pos = module_path.rfind('/');
+        if (pos == cv::String::npos)
+            pos = module_path.rfind('\\');
+        cv::String module_dir = (pos == cv::String::npos) ? module_path : module_path.substr(0, pos);
+        const char* install_subdirs[] = { OPENCV_INSTALL_DATA_DIR_RELATIVE };
+        for (size_t k = 0; k < sizeof(install_subdirs)/sizeof(install_subdirs[0]); k++)
+        {
+            cv::String datapath = utils::fs::join(module_dir, install_subdirs[k]);
+            CV_LOG_DEBUG(NULL, "utils::findDataFile(): trying install path (from binary path): " << datapath);
+            if (utils::fs::isDirectory(datapath))
+            {
+                for(size_t i = search_subdir.size(); i > 0; i--)
+                {
+                    const cv::String& subdir = search_subdir[i - 1];
+                    cv::String prefix = utils::fs::join(datapath, subdir);
+                    TRY_FILE_WITH_PREFIX(prefix);
+                }
+            }
+            else
+            {
+                CV_LOG_DEBUG(NULL, "utils::findDataFile(): ... skip, not a valid directory: " << datapath);
+            }
+        }
+    }
+#endif
+
+#if defined OPENCV_INSTALL_PREFIX && defined OPENCV_DATA_INSTALL_PATH
+    cv::String install_dir(OPENCV_INSTALL_PREFIX);
+    // use core/world module path and verify that library is running from installation directory
+    // It is neccessary to avoid touching of unrelated common /usr/local path
+    if (module_path.empty()) // can't determine
+        module_path = install_dir;
+    if (isSubDirectory(install_dir, module_path) || isSubDirectory(utils::fs::canonical(install_dir), utils::fs::canonical(module_path)))
+    {
+        cv::String datapath = utils::fs::join(install_dir, OPENCV_DATA_INSTALL_PATH);
+        if (utils::fs::isDirectory(datapath))
+        {
+            CV_LOG_DEBUG(NULL, "utils::findDataFile(): trying install path: " << datapath);
+            for(size_t i = search_subdir.size(); i > 0; i--)
+            {
+                const cv::String& subdir = search_subdir[i - 1];
+                cv::String prefix = utils::fs::join(datapath, subdir);
+                TRY_FILE_WITH_PREFIX(prefix);
+            }
+        }
+    }
+#endif
+
+    return cv::String();  // not found
+}
+
+cv::String findDataFile(const cv::String& relative_path, bool required, const char* configuration_parameter)
+{
+    CV_LOG_DEBUG(NULL, cv::format("cv::utils::findDataFile('%s', %s, %s)",
+                                  relative_path.c_str(), required ? "true" : "false",
+                                  configuration_parameter ? configuration_parameter : "NULL"));
+    cv::String result = cv::utils::findDataFile(relative_path,
+                                                configuration_parameter,
+                                                NULL,
+                                                NULL);
+    if (result.empty() && required)
+        CV_Error(cv::Error::StsError, cv::format("OpenCV: Can't find required data file: %s", relative_path.c_str()));
+    return result;
+}
+
+}} // namespace

modules/core/src/utils/filesystem.cpp

@@ -85,6 +85,23 @@ cv::String join(const cv::String& base, const cv::String& path)
 
 #if OPENCV_HAVE_FILESYSTEM_SUPPORT
 
+cv::String canonical(const cv::String& path)
+{
+    cv::String result;
+#ifdef _WIN32
+    const char* result_str = _fullpath(NULL, path.c_str(), 0);
+#else
+    const char* result_str = realpath(path.c_str(), NULL);
+#endif
+    if (result_str)
+    {
+        result = cv::String(result_str);
+        free((void*)result_str);
+    }
+    return result.empty() ? path : result;
+}
+
+
 bool exists(const cv::String& path)
 {
     CV_INSTRUMENT_REGION();
@@ -543,11 +560,12 @@ cv::String getCacheDirectory(const char* sub_directory_name, const char* configu
 
 #else
 #define NOT_IMPLEMENTED CV_Error(Error::StsNotImplemented, "");
-CV_EXPORTS bool exists(const cv::String& /*path*/) { NOT_IMPLEMENTED }
-CV_EXPORTS void remove_all(const cv::String& /*path*/) { NOT_IMPLEMENTED }
-CV_EXPORTS bool createDirectory(const cv::String& /*path*/) { NOT_IMPLEMENTED }
-CV_EXPORTS bool createDirectories(const cv::String& /*path*/) { NOT_IMPLEMENTED }
-CV_EXPORTS cv::String getCacheDirectory(const char* /*sub_directory_name*/, const char* /*configuration_name = NULL*/) { NOT_IMPLEMENTED }
+cv::String canonical(const cv::String& /*path*/) { NOT_IMPLEMENTED }
+bool exists(const cv::String& /*path*/) { NOT_IMPLEMENTED }
+void remove_all(const cv::String& /*path*/) { NOT_IMPLEMENTED }
+bool createDirectory(const cv::String& /*path*/) { NOT_IMPLEMENTED }
+bool createDirectories(const cv::String& /*path*/) { NOT_IMPLEMENTED }
+cv::String getCacheDirectory(const char* /*sub_directory_name*/, const char* /*configuration_name = NULL*/) { NOT_IMPLEMENTED }
 #undef NOT_IMPLEMENTED
 #endif // OPENCV_HAVE_FILESYSTEM_SUPPORT
 

modules/core/src/utils/samples.cpp

@@ -0,0 +1,67 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+
+#include "../precomp.hpp"
+
+#include <vector>
+
+#include <opencv2/core/utils/logger.defines.hpp>
+#undef CV_LOG_STRIP_LEVEL
+#define CV_LOG_STRIP_LEVEL CV_LOG_LEVEL_VERBOSE + 1
+#include "opencv2/core/utils/logger.hpp"
+#include "opencv2/core/utils/filesystem.hpp"
+
+namespace cv { namespace samples {
+
+static cv::Ptr< std::vector<cv::String> > g_data_search_path;
+static cv::Ptr< std::vector<cv::String> > g_data_search_subdir;
+
+static std::vector<cv::String>& _getDataSearchPath()
+{
+    if (g_data_search_path.empty())
+        g_data_search_path.reset(new std::vector<cv::String>());
+    return *(g_data_search_path.get());
+}
+
+static std::vector<cv::String>& _getDataSearchSubDirectory()
+{
+    if (g_data_search_subdir.empty())
+    {
+        g_data_search_subdir.reset(new std::vector<cv::String>());
+        g_data_search_subdir->push_back("samples/data");
+        g_data_search_subdir->push_back("data");
+        g_data_search_subdir->push_back("");
+    }
+    return *(g_data_search_subdir.get());
+}
+
+
+CV_EXPORTS void addSamplesDataSearchPath(const cv::String& path)
+{
+    if (utils::fs::isDirectory(path))
+        _getDataSearchPath().push_back(path);
+}
+CV_EXPORTS void addSamplesDataSearchSubDirectory(const cv::String& subdir)
+{
+    _getDataSearchSubDirectory().push_back(subdir);
+}
+
+cv::String findFile(const cv::String& relative_path, bool required, bool silentMode)
+{
+    CV_LOG_DEBUG(NULL, cv::format("cv::samples::findFile('%s', %s)", relative_path.c_str(), required ? "true" : "false"));
+    cv::String result = cv::utils::findDataFile(relative_path,
+                                                "OPENCV_SAMPLES_DATA_PATH",
+                                                &_getDataSearchPath(),
+                                                &_getDataSearchSubDirectory());
+    if (result != relative_path && !silentMode)
+    {
+        CV_LOG_WARNING(NULL, "cv::samples::findFile('" << relative_path << "') => '" << result << "'");
+    }
+    if (result.empty() && required)
+        CV_Error(cv::Error::StsError, cv::format("OpenCV samples: Can't find required data file: %s", relative_path.c_str()));
+    return result;
+}
+
+
+}} // namespace

modules/core/test/test_utils.cpp

@@ -2,6 +2,7 @@
 // It is subject to the license terms in the LICENSE file found in the top-level directory
 // of this distribution and at http://opencv.org/license.html.
 #include "test_precomp.hpp"
+#include "opencv2/core/utils/logger.hpp"
 
 namespace opencv_test { namespace {
 
@@ -283,4 +284,21 @@ TEST(CommandLineParser, testScalar)
     EXPECT_EQ(parser.get<Scalar>("s5"), Scalar(5, -4, 3, 2));
 }
 
+TEST(Samples, findFile)
+{
+    cv::utils::logging::LogLevel prev = cv::utils::logging::setLogLevel(cv::utils::logging::LOG_LEVEL_VERBOSE);
+    cv::String path;
+    ASSERT_NO_THROW(path = samples::findFile("lena.jpg", false));
+    EXPECT_NE(std::string(), path.c_str());
+    cv::utils::logging::setLogLevel(prev);
+}
+
+TEST(Samples, findFile_missing)
+{
+    cv::utils::logging::LogLevel prev = cv::utils::logging::setLogLevel(cv::utils::logging::LOG_LEVEL_VERBOSE);
+    cv::String path;
+    ASSERT_ANY_THROW(path = samples::findFile("non-existed.file", true));
+    cv::utils::logging::setLogLevel(prev);
+}
+
 }} // namespace

modules/dnn/CMakeLists.txt

@@ -20,11 +20,6 @@ else()
   ocv_cmake_hook_append(INIT_MODULE_SOURCES_opencv_dnn "${CMAKE_CURRENT_LIST_DIR}/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake")
 endif()
 
-ocv_warnings_disable(CMAKE_CXX_FLAGS -Wno-shadow -Wno-parentheses -Wmaybe-uninitialized -Wsign-promo
-                                     -Wmissing-declarations -Wmissing-prototypes
-)
-ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4701 /wd4100)
-
 if(MSVC)
   add_definitions( -D_CRT_SECURE_NO_WARNINGS=1 )
   ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4244 /wd4267 /wd4018 /wd4355 /wd4800 /wd4251 /wd4996 /wd4146
@@ -33,12 +28,14 @@ if(MSVC)
   )
 else()
   ocv_warnings_disable(CMAKE_CXX_FLAGS -Wno-deprecated -Wmissing-prototypes -Wmissing-declarations -Wshadow
-                                       -Wunused-parameter -Wunused-local-typedefs -Wsign-compare -Wsign-promo
-                                       -Wundef -Wtautological-undefined-compare -Wignored-qualifiers -Wextra
-                                       -Wunused-function -Wunused-const-variable -Wdeprecated-declarations
+                                       -Wunused-parameter -Wsign-compare
   )
 endif()
 
+if(NOT HAVE_CXX11)
+  ocv_warnings_disable(CMAKE_CXX_FLAGS -Wno-undef)  # LANG_CXX11 from protobuf files
+endif()
+
 if(APPLE_FRAMEWORK)
   ocv_warnings_disable(CMAKE_CXX_FLAGS -Wshorten-64-to-32)
 endif()
@@ -55,8 +52,6 @@ add_definitions(-DHAVE_PROTOBUF=1)
 
 #suppress warnings in autogenerated caffe.pb.* files
 ocv_warnings_disable(CMAKE_CXX_FLAGS
-    -Wunused-parameter -Wundef -Wignored-qualifiers -Wno-enum-compare
-    -Wdeprecated-declarations
     /wd4125 /wd4267 /wd4127 /wd4244 /wd4512 /wd4702
     /wd4456 /wd4510 /wd4610 /wd4800
     /wd4701 /wd4703                    # potentially uninitialized local/pointer variable 'value' used

modules/dnn/include/opencv2/dnn/all_layers.hpp

@@ -236,7 +236,7 @@ CV__DNN_INLINE_NS_BEGIN
         int type;
         Size kernel, stride;
         int pad_l, pad_t, pad_r, pad_b;
-        CV_DEPRECATED Size pad;
+        CV_DEPRECATED_EXTERNAL Size pad;
         bool globalPooling;
         bool computeMaxIdx;
         String padMode;
@@ -578,7 +578,7 @@ CV__DNN_INLINE_NS_BEGIN
     {
     public:
         float pnorm, epsilon;
-        CV_DEPRECATED bool acrossSpatial;
+        CV_DEPRECATED_EXTERNAL bool acrossSpatial;
 
         static Ptr<NormalizeBBoxLayer> create(const LayerParams& params);
     };

modules/dnn/include/opencv2/dnn/dict.hpp

@@ -60,12 +60,13 @@ CV__DNN_INLINE_NS_BEGIN
 struct CV_EXPORTS_W DictValue
 {
     DictValue(const DictValue &r);
+    DictValue(bool i)           : type(Param::INT), pi(new AutoBuffer<int64,1>) { (*pi)[0] = i ? 1 : 0; }       //!< Constructs integer scalar
     DictValue(int64 i = 0)      : type(Param::INT), pi(new AutoBuffer<int64,1>) { (*pi)[0] = i; }       //!< Constructs integer scalar
-    CV_WRAP DictValue(int i)            : type(Param::INT), pi(new AutoBuffer<int64,1>) { (*pi)[0] = i; }       //!< Constructs integer scalar
+    CV_WRAP DictValue(int i)    : type(Param::INT), pi(new AutoBuffer<int64,1>) { (*pi)[0] = i; }       //!< Constructs integer scalar
     DictValue(unsigned p)       : type(Param::INT), pi(new AutoBuffer<int64,1>) { (*pi)[0] = p; }       //!< Constructs integer scalar
     CV_WRAP DictValue(double p)         : type(Param::REAL), pd(new AutoBuffer<double,1>) { (*pd)[0] = p; }     //!< Constructs floating point scalar
     CV_WRAP DictValue(const String &s)  : type(Param::STRING), ps(new AutoBuffer<String,1>) { (*ps)[0] = s; }   //!< Constructs string scalar
-    DictValue(const char *s)    : type(Param::STRING), ps(new AutoBuffer<String,1>) { (*ps)[0] = s; }   //!< @overload
+    DictValue(const char *s)            : type(Param::STRING), ps(new AutoBuffer<String,1>) { (*ps)[0] = s; }   //!< @overload
 
     template<typename TypeIter>
     static DictValue arrayInt(TypeIter begin, int size);    //!< Constructs integer array

modules/dnn/include/opencv2/dnn/dnn.hpp

@@ -181,7 +181,8 @@ CV__DNN_INLINE_NS_BEGIN
          * If this method is called after network has allocated all memory for input and output blobs
          * and before inferencing.
          */
-        CV_DEPRECATED virtual void finalize(const std::vector<Mat*> &input, std::vector<Mat> &output);
+        CV_DEPRECATED_EXTERNAL
+        virtual void finalize(const std::vector<Mat*> &input, std::vector<Mat> &output);
 
         /** @brief Computes and sets internal parameters according to inputs, outputs and blobs.
          *  @param[in]  inputs  vector of already allocated input blobs
@@ -198,7 +199,8 @@ CV__DNN_INLINE_NS_BEGIN
          *  @param[out] output allocated output blobs, which will store results of the computation.
          *  @param[out] internals allocated internal blobs
          */
-        CV_DEPRECATED virtual void forward(std::vector<Mat*> &input, std::vector<Mat> &output, std::vector<Mat> &internals);
+        CV_DEPRECATED_EXTERNAL
+        virtual void forward(std::vector<Mat*> &input, std::vector<Mat> &output, std::vector<Mat> &internals);
 
         /** @brief Given the @p input blobs, computes the output @p blobs.
          *  @param[in]  inputs  the input blobs.
@@ -218,7 +220,8 @@ CV__DNN_INLINE_NS_BEGIN
          * @overload
          * @deprecated Use Layer::finalize(InputArrayOfArrays, OutputArrayOfArrays) instead
          */
-        CV_DEPRECATED void finalize(const std::vector<Mat> &inputs, CV_OUT std::vector<Mat> &outputs);
+        CV_DEPRECATED_EXTERNAL
+        void finalize(const std::vector<Mat> &inputs, CV_OUT std::vector<Mat> &outputs);
 
         /** @brief
          * @overload

modules/dnn/perf/perf_net.cpp

@@ -175,8 +175,7 @@ PERF_TEST_P_(DNNTestNetwork, MobileNet_SSD_v2_TensorFlow)
 PERF_TEST_P_(DNNTestNetwork, DenseNet_121)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && (target == DNN_TARGET_OPENCL_FP16 ||
-                                                    target == DNN_TARGET_MYRIAD))
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD)))
         throw SkipTestException("");
     processNet("dnn/DenseNet_121.caffemodel", "dnn/DenseNet_121.prototxt", "",
                Mat(cv::Size(224, 224), CV_32FC3));
@@ -185,7 +184,7 @@ PERF_TEST_P_(DNNTestNetwork, DenseNet_121)
 PERF_TEST_P_(DNNTestNetwork, OpenPose_pose_coco)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     processNet("dnn/openpose_pose_coco.caffemodel", "dnn/openpose_pose_coco.prototxt", "",
                Mat(cv::Size(368, 368), CV_32FC3));
@@ -194,7 +193,7 @@ PERF_TEST_P_(DNNTestNetwork, OpenPose_pose_coco)
 PERF_TEST_P_(DNNTestNetwork, OpenPose_pose_mpi)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     processNet("dnn/openpose_pose_mpi.caffemodel", "dnn/openpose_pose_mpi.prototxt", "",
                Mat(cv::Size(368, 368), CV_32FC3));
@@ -203,7 +202,7 @@ PERF_TEST_P_(DNNTestNetwork, OpenPose_pose_mpi)
 PERF_TEST_P_(DNNTestNetwork, OpenPose_pose_mpi_faster_4_stages)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     // The same .caffemodel but modified .prototxt
     // See https://github.com/CMU-Perceptual-Computing-Lab/openpose/blob/master/src/openpose/pose/poseParameters.cpp
@@ -230,7 +229,7 @@ PERF_TEST_P_(DNNTestNetwork, Inception_v2_SSD_TensorFlow)
 PERF_TEST_P_(DNNTestNetwork, YOLOv3)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     Mat sample = imread(findDataFile("dnn/dog416.png", false));
     Mat inp;
@@ -241,7 +240,7 @@ PERF_TEST_P_(DNNTestNetwork, YOLOv3)
 PERF_TEST_P_(DNNTestNetwork, EAST_text_detection)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     processNet("dnn/frozen_east_text_detection.pb", "", "", Mat(cv::Size(320, 320), CV_32FC3));
 }

modules/dnn/src/caffe/caffe_io.cpp

@@ -404,7 +404,7 @@ bool UpgradeV0LayerParameter(V1LayerParameter* v0_layer_connection_,
               PoolingParameter_PoolMethod_STOCHASTIC);
           break;
         default:
-          LOG(ERROR) << "Unknown pool method " << pool;
+          LOG(ERROR) << "Unknown pool method " << (int)pool;
           is_fully_compatible = false;
         }
       } else {
@@ -863,7 +863,7 @@ bool UpgradeV1LayerParameter(V1LayerParameter* v1_layer_param_,
     while (layer_param->param_size() <= i) { layer_param->add_param(); }
     layer_param->mutable_param(i)->set_name(v1_layer_param.param(i));
   }
-  ParamSpec_DimCheckMode mode;
+  ParamSpec_DimCheckMode mode = ParamSpec_DimCheckMode_STRICT;
   for (int i = 0; i < v1_layer_param.blob_share_mode_size(); ++i) {
     while (layer_param->param_size() <= i) { layer_param->add_param(); }
     switch (v1_layer_param.blob_share_mode(i)) {
@@ -875,8 +875,8 @@ bool UpgradeV1LayerParameter(V1LayerParameter* v1_layer_param_,
       break;
     default:
       LOG(FATAL) << "Unknown blob_share_mode: "
-                 << v1_layer_param.blob_share_mode(i);
-      break;
+                 << (int)v1_layer_param.blob_share_mode(i);
+      CV_Error_(Error::StsError, ("Unknown blob_share_mode: %d", (int)v1_layer_param.blob_share_mode(i)));
     }
     layer_param->mutable_param(i)->set_share_mode(mode);
   }
@@ -1102,12 +1102,12 @@ const char* UpgradeV1LayerType(const V1LayerParameter_LayerType type) {
   case V1LayerParameter_LayerType_THRESHOLD:
     return "Threshold";
   default:
-    LOG(FATAL) << "Unknown V1LayerParameter layer type: " << type;
+    LOG(FATAL) << "Unknown V1LayerParameter layer type: " << (int)type;
     return "";
   }
 }
 
-const int kProtoReadBytesLimit = INT_MAX;  // Max size of 2 GB minus 1 byte.
+static const int kProtoReadBytesLimit = INT_MAX;  // Max size of 2 GB minus 1 byte.
 
 bool ReadProtoFromBinary(ZeroCopyInputStream* input, Message *proto) {
     CodedInputStream coded_input(input);

modules/dnn/src/dnn.cpp

@@ -353,7 +353,7 @@ struct LayerPin
 
     bool operator<(const LayerPin &r) const
     {
-        return lid < r.lid || lid == r.lid && oid < r.oid;
+        return lid < r.lid || (lid == r.lid && oid < r.oid);
     }
 
     bool operator ==(const LayerPin &r) const
@@ -428,7 +428,7 @@ struct DataLayer : public Layer
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && inputsData.size() == 1;
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && inputsData.size() == 1);
     }
 
     void forward(InputArrayOfArrays inputs_arr, OutputArrayOfArrays outputs_arr, OutputArrayOfArrays internals_arr) CV_OVERRIDE
@@ -1665,6 +1665,23 @@ struct Net::Impl
 
             if (!ieNode->net->isInitialized())
             {
+#if INF_ENGINE_VER_MAJOR_GT(INF_ENGINE_RELEASE_2018R3)
+                // For networks which is built in runtime we need to specify a
+                // version of it's hyperparameters.
+                std::string versionTrigger = "<net name=\"TestInput\" version=\"3\" batch=\"1\">"
+                                               "<layers>"
+                                                 "<layer name=\"data\" type=\"Input\" precision=\"FP32\" id=\"0\">"
+                                                   "<output>"
+                                                     "<port id=\"0\">"
+                                                       "<dim>1</dim>"
+                                                     "</port>"
+                                                   "</output>"
+                                                 "</layer>"
+                                               "</layers>"
+                                             "</net>";
+                InferenceEngine::CNNNetReader reader;
+                reader.ReadNetwork(versionTrigger.data(), versionTrigger.size());
+#endif
                 ieNode->net->init(preferableTarget);
                 ld.skip = false;
             }
@@ -1787,8 +1804,8 @@ struct Net::Impl
 
     void fuseLayers(const std::vector<LayerPin>& blobsToKeep_)
     {
-        if( !fusion || preferableBackend != DNN_BACKEND_OPENCV &&
-                       preferableBackend != DNN_BACKEND_INFERENCE_ENGINE)
+        if( !fusion || (preferableBackend != DNN_BACKEND_OPENCV &&
+                        preferableBackend != DNN_BACKEND_INFERENCE_ENGINE))
             return;
 
         CV_TRACE_FUNCTION();

modules/dnn/src/layers/batch_norm_layer.cpp

@@ -151,8 +151,8 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_HALIDE && haveHalide() ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine();
+               (backendId == DNN_BACKEND_HALIDE && haveHalide()) ||
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine());
     }
 
 #ifdef HAVE_OPENCL

modules/dnn/src/layers/blank_layer.cpp

@@ -57,7 +57,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine();
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine());
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,
@@ -107,14 +107,21 @@ public:
                 inputs[i].copyTo(outputs[i]);
     }
 
-    virtual Ptr<BackendNode> initInfEngine(const std::vector<Ptr<BackendWrapper> >&) CV_OVERRIDE
+    virtual Ptr<BackendNode> initInfEngine(const std::vector<Ptr<BackendWrapper> >& inputs) CV_OVERRIDE
     {
 #ifdef HAVE_INF_ENGINE
+        InferenceEngine::DataPtr input = infEngineDataNode(inputs[0]);
+        CV_Assert(!input->dims.empty());
+
         InferenceEngine::LayerParams lp;
         lp.name = name;
         lp.type = "Split";
         lp.precision = InferenceEngine::Precision::FP32;
         std::shared_ptr<InferenceEngine::SplitLayer> ieLayer(new InferenceEngine::SplitLayer(lp));
+#if INF_ENGINE_VER_MAJOR_GT(INF_ENGINE_RELEASE_2018R3)
+        ieLayer->params["axis"] = format("%d", input->dims.size() - 1);
+        ieLayer->params["out_sizes"] = format("%d", input->dims[0]);
+#endif
         return Ptr<BackendNode>(new InfEngineBackendNode(ieLayer));
 #endif  // HAVE_INF_ENGINE
         return Ptr<BackendNode>();

modules/dnn/src/layers/concat_layer.cpp

@@ -105,9 +105,9 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_HALIDE && haveHalide() && axis == 1 && !padding ||  // By channels
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() && !padding ||
-               backendId == DNN_BACKEND_VKCOM && haveVulkan() && !padding;
+               (backendId == DNN_BACKEND_HALIDE && haveHalide() && axis == 1 && !padding) ||  // By channels
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() && !padding) ||
+               (backendId == DNN_BACKEND_VKCOM && haveVulkan() && !padding);
     }
 
     class ChannelConcatInvoker : public ParallelLoopBody

modules/dnn/src/layers/convolution_layer.cpp

@@ -225,7 +225,7 @@ public:
         else
             return backendId == DNN_BACKEND_OPENCV ||
                    backendId == DNN_BACKEND_HALIDE ||
-                   backendId == DNN_BACKEND_VKCOM && haveVulkan();
+                   (backendId == DNN_BACKEND_VKCOM && haveVulkan());
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,
@@ -530,6 +530,12 @@ public:
         ieLayer->_pads_end.insert(InferenceEngine::Y_AXIS, pad.height);
         ieLayer->_dilation.insert(InferenceEngine::X_AXIS, dilation.width);
         ieLayer->_dilation.insert(InferenceEngine::Y_AXIS, dilation.height);
+        ieLayer->params["output"] = format("%d", outCn);
+        ieLayer->params["kernel"] = format("%d,%d,%d,%d", outCn, inpGroupCn, kernel.height, kernel.width);
+        ieLayer->params["pads_begin"] = format("%d,%d", pad.height, pad.width);
+        ieLayer->params["pads_end"] = format("%d,%d", pad.height, pad.width);
+        ieLayer->params["strides"] = format("%d,%d", stride.height, stride.width);
+        ieLayer->params["dilations"] = format("%d,%d", dilation.height, dilation.width);
 #else
         ieLayer->_kernel_x = kernel.width;
         ieLayer->_kernel_y = kernel.height;

modules/dnn/src/layers/crop_layer.cpp

@@ -68,7 +68,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && crop_ranges.size() == 4;
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && crop_ranges.size() == 4);
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,
@@ -156,6 +156,14 @@ public:
 
         CV_Assert(crop_ranges.size() == 4);
 
+#if INF_ENGINE_VER_MAJOR_GT(INF_ENGINE_RELEASE_2018R3)
+        for (int i = 0; i < 4; ++i)
+        {
+            ieLayer->axis.push_back(i);
+            ieLayer->offset.push_back(crop_ranges[i].start);
+            ieLayer->dim.push_back(crop_ranges[i].end - crop_ranges[i].start);
+        }
+#else
         ieLayer->axis.push_back(0);  // batch
         ieLayer->offset.push_back(crop_ranges[0].start);
         ieLayer->dim.push_back(crop_ranges[0].end - crop_ranges[0].start);
@@ -171,7 +179,7 @@ public:
         ieLayer->axis.push_back(2);  // width
         ieLayer->offset.push_back(crop_ranges[3].start);
         ieLayer->dim.push_back(crop_ranges[3].end - crop_ranges[3].start);
-
+#endif
         return Ptr<BackendNode>(new InfEngineBackendNode(ieLayer));
 #endif  // HAVE_INF_ENGINE
         return Ptr<BackendNode>();

modules/dnn/src/layers/detection_output_layer.cpp

@@ -198,7 +198,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && !_locPredTransposed && _bboxesNormalized && !_clip;
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && !_locPredTransposed && _bboxesNormalized && !_clip);
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/eltwise_layer.cpp

@@ -98,7 +98,7 @@ public:
     {
         return backendId == DNN_BACKEND_OPENCV ||
                backendId == DNN_BACKEND_HALIDE ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && (op != SUM || coeffs.empty());
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && (op != SUM || coeffs.empty()));
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/flatten_layer.cpp

@@ -65,7 +65,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine();
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine());
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/fully_connected_layer.cpp

@@ -123,8 +123,8 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_HALIDE && haveHalide() && axis == 1 ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() && axis == 1;
+               (backendId == DNN_BACKEND_HALIDE && haveHalide() && axis == 1) ||
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() && axis == 1);
     }
 
     virtual bool setActivation(const Ptr<ActivationLayer>& layer) CV_OVERRIDE
@@ -449,6 +449,9 @@ public:
         std::shared_ptr<InferenceEngine::FullyConnectedLayer> ieLayer(new InferenceEngine::FullyConnectedLayer(lp));
 
         ieLayer->_out_num = blobs[0].size[0];
+#if INF_ENGINE_VER_MAJOR_GT(INF_ENGINE_RELEASE_2018R3)
+        ieLayer->params["out-size"] = format("%d", blobs[0].size[0]);
+#endif
         ieLayer->_weights = wrapToInfEngineBlob(blobs[0], {(size_t)blobs[0].size[0], (size_t)blobs[0].size[1], 1, 1}, InferenceEngine::Layout::OIHW);
         if (blobs.size() > 1)
             ieLayer->_biases = wrapToInfEngineBlob(blobs[1], {(size_t)ieLayer->_out_num}, InferenceEngine::Layout::C);

modules/dnn/src/layers/lrn_layer.cpp

@@ -93,8 +93,8 @@ public:
     {
         return backendId == DNN_BACKEND_OPENCV ||
                backendId == DNN_BACKEND_HALIDE ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && (preferableTarget != DNN_TARGET_MYRIAD || type == CHANNEL_NRM) ||
-               backendId == DNN_BACKEND_VKCOM && haveVulkan() && (size % 2 == 1) && (type == CHANNEL_NRM);
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && (preferableTarget != DNN_TARGET_MYRIAD || type == CHANNEL_NRM)) ||
+               (backendId == DNN_BACKEND_VKCOM && haveVulkan() && (size % 2 == 1) && (type == CHANNEL_NRM));
     }
 
 #ifdef HAVE_OPENCL

modules/dnn/src/layers/max_unpooling_layer.cpp

@@ -35,8 +35,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_HALIDE && haveHalide() &&
-               !poolPad.width && !poolPad.height;
+               (backendId == DNN_BACKEND_HALIDE && haveHalide() && !poolPad.width && !poolPad.height);
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/padding_layer.cpp

@@ -91,7 +91,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_HALIDE && haveHalide() && dstRanges.size() == 4;
+               (backendId == DNN_BACKEND_HALIDE && haveHalide() && dstRanges.size() == 4);
     }
 
     void forward(InputArrayOfArrays inputs_arr, OutputArrayOfArrays outputs_arr, OutputArrayOfArrays internals_arr) CV_OVERRIDE

modules/dnn/src/layers/permute_layer.cpp

@@ -106,8 +106,8 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() ||
-               backendId == DNN_BACKEND_VKCOM && haveVulkan();
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine()) ||
+               (backendId == DNN_BACKEND_VKCOM && haveVulkan());
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/pooling_layer.cpp

@@ -155,10 +155,10 @@ public:
         }
         else
             return backendId == DNN_BACKEND_OPENCV ||
-                   backendId == DNN_BACKEND_HALIDE && haveHalide() &&
-                   (type == MAX || type == AVE && !pad_t && !pad_l && !pad_b && !pad_r) ||
-                   backendId == DNN_BACKEND_VKCOM && haveVulkan() &&
-                   (type == MAX || type == AVE);
+                   (backendId == DNN_BACKEND_HALIDE && haveHalide() &&
+                       (type == MAX || (type == AVE && !pad_t && !pad_l && !pad_b && !pad_r))) ||
+                   (backendId == DNN_BACKEND_VKCOM && haveVulkan() &&
+                       (type == MAX || type == AVE));
     }
 
 #ifdef HAVE_OPENCL
@@ -313,6 +313,10 @@ public:
             poolLayer->_padding.insert(InferenceEngine::Y_AXIS, pad_t);
             poolLayer->_pads_end.insert(InferenceEngine::X_AXIS, pad_r);
             poolLayer->_pads_end.insert(InferenceEngine::Y_AXIS, pad_b);
+            poolLayer->params["kernel"] = format("%d,%d", kernel.height, kernel.width);
+            poolLayer->params["pads_begin"] = format("%d,%d", pad_t, pad_l);
+            poolLayer->params["pads_end"] = format("%d,%d", pad_b, pad_r);
+            poolLayer->params["strides"] = format("%d,%d", stride.height, stride.width);
 #else
             poolLayer->_kernel_x = kernel.width;
             poolLayer->_kernel_y = kernel.height;
@@ -380,8 +384,8 @@ public:
                       src.isContinuous(), dst.isContinuous(),
                       src.type() == CV_32F, src.type() == dst.type(),
                       src.dims == 4, dst.dims == 4,
-                      ((poolingType == ROI || poolingType == PSROI) && dst.size[0] ==rois.size[0] || src.size[0] == dst.size[0]),
-                       poolingType == PSROI || src.size[1] == dst.size[1],
+                      (((poolingType == ROI || poolingType == PSROI) && dst.size[0] == rois.size[0]) || src.size[0] == dst.size[0]),
+                      poolingType == PSROI || src.size[1] == dst.size[1],
                       (mask.empty() || (mask.type() == src.type() && mask.size == dst.size)));
 
             PoolingInvoker p;

modules/dnn/src/layers/prior_box_layer.cpp

@@ -272,8 +272,8 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() ||
-               backendId == DNN_BACKEND_VKCOM && haveVulkan();
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine()) ||
+               (backendId == DNN_BACKEND_VKCOM && haveVulkan());
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/proposal_layer.cpp

@@ -87,7 +87,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && preferableTarget != DNN_TARGET_MYRIAD;
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && preferableTarget != DNN_TARGET_MYRIAD);
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/recurrent_layers.cpp

@@ -175,7 +175,7 @@ public:
                          std::vector<MatShape> &outputs,
                          std::vector<MatShape> &internals) const CV_OVERRIDE
     {
-        CV_Assert(!usePeephole && blobs.size() == 3 || usePeephole && blobs.size() == 6);
+        CV_Assert((!usePeephole && blobs.size() == 3) || (usePeephole && blobs.size() == 6));
         CV_Assert(inputs.size() == 1);
         const MatShape& inp0 = inputs[0];
 
@@ -221,7 +221,7 @@ public:
         std::vector<Mat> input;
         inputs_arr.getMatVector(input);
 
-        CV_Assert(!usePeephole && blobs.size() == 3 || usePeephole && blobs.size() == 6);
+        CV_Assert((!usePeephole && blobs.size() == 3) || (usePeephole && blobs.size() == 6));
         CV_Assert(input.size() == 1);
         const Mat& inp0 = input[0];
 

modules/dnn/src/layers/reshape_layer.cpp

@@ -178,7 +178,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine();
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine());
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/resize_layer.cpp

@@ -51,9 +51,14 @@ public:
 
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
+#ifdef HAVE_INF_ENGINE
         if (backendId == DNN_BACKEND_INFERENCE_ENGINE)
-            return interpolation == "nearest" && preferableTarget != DNN_TARGET_MYRIAD;
+        {
+            return (interpolation == "nearest" && preferableTarget != DNN_TARGET_MYRIAD) ||
+                   (interpolation == "bilinear" && INF_ENGINE_VER_MAJOR_GE(INF_ENGINE_RELEASE_2018R4));
+        }
         else
+#endif
             return backendId == DNN_BACKEND_OPENCV;
     }
 
@@ -160,15 +165,27 @@ public:
 #ifdef HAVE_INF_ENGINE
         InferenceEngine::LayerParams lp;
         lp.name = name;
-        lp.type = "Resample";
         lp.precision = InferenceEngine::Precision::FP32;
-
-        std::shared_ptr<InferenceEngine::CNNLayer> ieLayer(new InferenceEngine::CNNLayer(lp));
-        ieLayer->params["type"] = "caffe.ResampleParameter.NEAREST";
-        ieLayer->params["antialias"] = "0";
+        std::shared_ptr<InferenceEngine::CNNLayer> ieLayer;
+        if (interpolation == "nearest")
+        {
+            lp.type = "Resample";
+            ieLayer = std::shared_ptr<InferenceEngine::CNNLayer>(new InferenceEngine::CNNLayer(lp));
+            ieLayer->params["type"] = "caffe.ResampleParameter.NEAREST";
+            ieLayer->params["antialias"] = "0";
+        }
+        else if (interpolation == "bilinear")
+        {
+            lp.type = "Interp";
+            ieLayer = std::shared_ptr<InferenceEngine::CNNLayer>(new InferenceEngine::CNNLayer(lp));
+            ieLayer->params["pad_beg"] = "0";
+            ieLayer->params["pad_end"] = "0";
+            ieLayer->params["align_corners"] = "0";
+        }
+        else
+            CV_Error(Error::StsNotImplemented, "Unsupported interpolation: " + interpolation);
         ieLayer->params["width"] = cv::format("%d", outWidth);
         ieLayer->params["height"] = cv::format("%d", outHeight);
-
         return Ptr<BackendNode>(new InfEngineBackendNode(ieLayer));
 #endif  // HAVE_INF_ENGINE
         return Ptr<BackendNode>();

modules/dnn/src/layers/scale_layer.cpp

@@ -45,13 +45,13 @@ public:
         std::vector<Mat> inputs;
         inputs_arr.getMatVector(inputs);
         hasWeights = blobs.size() == 2 || (blobs.size() == 1 && !hasBias);
-        CV_Assert(inputs.size() == 2 && blobs.empty() || blobs.size() == (int)hasWeights + (int)hasBias);
+        CV_Assert((inputs.size() == 2 && blobs.empty()) || blobs.size() == (int)hasWeights + (int)hasBias);
     }
 
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV || backendId == DNN_BACKEND_HALIDE ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && axis == 1;
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && axis == 1);
     }
 
     void forward(InputArrayOfArrays inputs_arr, OutputArrayOfArrays outputs_arr, OutputArrayOfArrays internals_arr) CV_OVERRIDE

modules/dnn/src/layers/slice_layer.cpp

@@ -111,7 +111,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && sliceRanges.size() == 1 && sliceRanges[0].size() == 4;
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && sliceRanges.size() == 1 && sliceRanges[0].size() == 4);
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,

modules/dnn/src/layers/softmax_layer.cpp

@@ -90,9 +90,9 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_HALIDE && haveHalide() && axisRaw == 1 ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() && !logSoftMax ||
-               backendId == DNN_BACKEND_VKCOM && haveVulkan();
+               (backendId == DNN_BACKEND_HALIDE && haveHalide() && axisRaw == 1) ||
+               (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() && !logSoftMax) ||
+               (backendId == DNN_BACKEND_VKCOM && haveVulkan());
     }
 
 #ifdef HAVE_OPENCL

modules/dnn/src/ocl4dnn/src/ocl4dnn_conv_spatial.cpp

@@ -638,7 +638,7 @@ void OCL4DNNConvSpatial<Dtype>::generateKey()
                << "p" << pad_w_ << "x" << pad_h_ << "_"
                << "num" << num_ << "_"
                << "M" << M_ << "_"
-               << "activ" << fused_activ_ << "_"
+               << "activ" << (int)fused_activ_ << "_"
                << "eltwise" << fused_eltwise_ << "_"
                << precision;
 

modules/dnn/src/onnx/onnx_importer.cpp

@@ -508,6 +508,16 @@ void ONNXImporter::populateNet(Net dstNet)
             layerParams.set("num_output", layerParams.blobs[0].size[0]);
             layerParams.set("bias_term", node_proto.input_size() == 3);
         }
+        else if (layer_type == "ConvTranspose")
+        {
+            CV_Assert(node_proto.input_size() >= 2);
+            layerParams.type = "Deconvolution";
+            for (int j = 1; j < node_proto.input_size(); j++) {
+                layerParams.blobs.push_back(getBlob(node_proto, constBlobs, j));
+            }
+            layerParams.set("num_output", layerParams.blobs[0].size[1]);
+            layerParams.set("bias_term", node_proto.input_size() == 3);
+        }
         else if (layer_type == "Transpose")
         {
             layerParams.type = "Permute";

modules/dnn/src/op_inf_engine.cpp

@@ -309,7 +309,7 @@ void InfEngineBackendNet::setTargetDevice(InferenceEngine::TargetDevice device)
 
 InferenceEngine::TargetDevice InfEngineBackendNet::getTargetDevice() CV_NOEXCEPT
 {
-    return targetDevice;
+    return const_cast<const InfEngineBackendNet*>(this)->getTargetDevice();
 }
 
 InferenceEngine::TargetDevice InfEngineBackendNet::getTargetDevice() const CV_NOEXCEPT
@@ -387,6 +387,27 @@ void InfEngineBackendNet::init(int targetId)
             }
         }
         CV_Assert(!inputs.empty());
+
+#if INF_ENGINE_VER_MAJOR_GT(INF_ENGINE_RELEASE_2018R3)
+        for (const auto& inp : inputs)
+        {
+            InferenceEngine::LayerParams lp;
+            lp.name = inp.first;
+            lp.type = "Input";
+            lp.precision = InferenceEngine::Precision::FP32;
+            std::shared_ptr<InferenceEngine::CNNLayer> inpLayer(new InferenceEngine::CNNLayer(lp));
+
+            layers.push_back(inpLayer);
+
+            InferenceEngine::DataPtr dataPtr = inp.second->getInputData();
+            // TODO: remove precision dependency (see setInput.normalization tests)
+            if (dataPtr->precision == InferenceEngine::Precision::FP32)
+            {
+                inpLayer->outData.assign(1, dataPtr);
+                dataPtr->creatorLayer = InferenceEngine::CNNLayerWeakPtr(inpLayer);
+            }
+        }
+#endif
     }
 
     if (outputs.empty())
@@ -559,7 +580,7 @@ bool InfEngineBackendLayer::getMemoryShapes(const std::vector<MatShape> &inputs,
 bool InfEngineBackendLayer::supportBackend(int backendId)
 {
     return backendId == DNN_BACKEND_DEFAULT ||
-           backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine();
+           (backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine());
 }
 
 void InfEngineBackendLayer::forward(InputArrayOfArrays inputs, OutputArrayOfArrays outputs,

modules/dnn/src/op_inf_engine.hpp

@@ -25,10 +25,11 @@
 #define INF_ENGINE_RELEASE_2018R1 2018010000
 #define INF_ENGINE_RELEASE_2018R2 2018020000
 #define INF_ENGINE_RELEASE_2018R3 2018030000
+#define INF_ENGINE_RELEASE_2018R4 2018040000
 
 #ifndef INF_ENGINE_RELEASE
-#warning("IE version have not been provided via command-line. Using 2018R2 by default")
-#define INF_ENGINE_RELEASE INF_ENGINE_RELEASE_2018R2
+#warning("IE version have not been provided via command-line. Using 2018R4 by default")
+#define INF_ENGINE_RELEASE INF_ENGINE_RELEASE_2018R4
 #endif
 
 #define INF_ENGINE_VER_MAJOR_GT(ver) (((INF_ENGINE_RELEASE) / 10000) > ((ver) / 10000))

modules/dnn/src/tensorflow/tf_importer.cpp

@@ -156,6 +156,7 @@ void blobFromTensor(const tensorflow::TensorProto &tensor, Mat &dstBlob)
     }
 }
 
+#if 0
 void printList(const tensorflow::AttrValue::ListValue &val)
 {
     std::cout << "(";
@@ -235,6 +236,7 @@ void printLayerAttr(const tensorflow::NodeDef &layer)
         std::cout << std::endl;
     }
 }
+#endif
 
 bool hasLayerAttr(const tensorflow::NodeDef &layer, const std::string &name)
 {

modules/dnn/src/tensorflow/tf_io.cpp

@@ -37,8 +37,6 @@ using namespace tensorflow;
 using namespace ::google::protobuf;
 using namespace ::google::protobuf::io;
 
-const int kProtoReadBytesLimit = INT_MAX;  // Max size of 2 GB minus 1 byte.
-
 void ReadTFNetParamsFromBinaryFileOrDie(const char* param_file,
                                         tensorflow::GraphDef* param) {
     CHECK(ReadProtoFromBinaryFile(param_file, param))

modules/dnn/test/test_backends.cpp

@@ -174,7 +174,7 @@ TEST_P(DNNTestNetwork, MobileNet_SSD_v2_TensorFlow)
         throw SkipTestException("");
     Mat sample = imread(findDataFile("dnn/street.png", false));
     Mat inp = blobFromImage(sample, 1.0f, Size(300, 300), Scalar(), false);
-    float l1 = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.011 : 0.0;
+    float l1 = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.013 : 0.0;
     float lInf = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.062 : 0.0;
     processNet("dnn/ssd_mobilenet_v2_coco_2018_03_29.pb", "dnn/ssd_mobilenet_v2_coco_2018_03_29.pbtxt",
                inp, "detection_out", "", l1, lInf, 0.25);
@@ -184,7 +184,7 @@ TEST_P(DNNTestNetwork, SSD_VGG16)
 {
     if (backend == DNN_BACKEND_HALIDE && target == DNN_TARGET_CPU)
         throw SkipTestException("");
-    double scoreThreshold = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.0252 : 0.0;
+    double scoreThreshold = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.0325 : 0.0;
     Mat sample = imread(findDataFile("dnn/street.png", false));
     Mat inp = blobFromImage(sample, 1.0f, Size(300, 300), Scalar(), false);
     processNet("dnn/VGG_ILSVRC2016_SSD_300x300_iter_440000.caffemodel",
@@ -194,7 +194,7 @@ TEST_P(DNNTestNetwork, SSD_VGG16)
 TEST_P(DNNTestNetwork, OpenPose_pose_coco)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     processNet("dnn/openpose_pose_coco.caffemodel", "dnn/openpose_pose_coco.prototxt",
                Size(368, 368));
@@ -203,7 +203,7 @@ TEST_P(DNNTestNetwork, OpenPose_pose_coco)
 TEST_P(DNNTestNetwork, OpenPose_pose_mpi)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     processNet("dnn/openpose_pose_mpi.caffemodel", "dnn/openpose_pose_mpi.prototxt",
                Size(368, 368));
@@ -212,7 +212,7 @@ TEST_P(DNNTestNetwork, OpenPose_pose_mpi)
 TEST_P(DNNTestNetwork, OpenPose_pose_mpi_faster_4_stages)
 {
     if (backend == DNN_BACKEND_HALIDE ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     // The same .caffemodel but modified .prototxt
     // See https://github.com/CMU-Perceptual-Computing-Lab/openpose/blob/master/src/openpose/pose/poseParameters.cpp

modules/dnn/test/test_caffe_importer.cpp

@@ -512,7 +512,11 @@ INSTANTIATE_TEST_CASE_P(Test_Caffe, opencv_face_detector,
 
 TEST_P(Test_Caffe_nets, FasterRCNN_vgg16)
 {
-    if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+    if ((backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+#if defined(INF_ENGINE_RELEASE) && INF_ENGINE_RELEASE > 2018030000
+     || (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_OPENCL_FP16)
+#endif
+    )
         throw SkipTestException("");
     static Mat ref = (Mat_<float>(3, 7) << 0, 2, 0.949398, 99.2454, 210.141, 601.205, 462.849,
                                            0, 7, 0.997022, 481.841, 92.3218, 722.685, 175.953,

modules/dnn/test/test_common.hpp

@@ -57,7 +57,7 @@ static inline void PrintTo(const cv::dnn::Backend& v, std::ostream* os)
     case DNN_BACKEND_OPENCV: *os << "OCV"; return;
     case DNN_BACKEND_VKCOM: *os << "VKCOM"; return;
     } // don't use "default:" to emit compiler warnings
-    *os << "DNN_BACKEND_UNKNOWN(" << v << ")";
+    *os << "DNN_BACKEND_UNKNOWN(" << (int)v << ")";
 }
 
 static inline void PrintTo(const cv::dnn::Target& v, std::ostream* os)
@@ -69,7 +69,7 @@ static inline void PrintTo(const cv::dnn::Target& v, std::ostream* os)
     case DNN_TARGET_MYRIAD: *os << "MYRIAD"; return;
     case DNN_TARGET_VULKAN: *os << "VULKAN"; return;
     } // don't use "default:" to emit compiler warnings
-    *os << "DNN_TARGET_UNKNOWN(" << v << ")";
+    *os << "DNN_TARGET_UNKNOWN(" << (int)v << ")";
 }
 
 using opencv_test::tuple;
@@ -237,7 +237,8 @@ namespace opencv_test {
 
 using namespace cv::dnn;
 
-static testing::internal::ParamGenerator<tuple<Backend, Target> > dnnBackendsAndTargets(
+static inline
+testing::internal::ParamGenerator<tuple<Backend, Target> > dnnBackendsAndTargets(
         bool withInferenceEngine = true,
         bool withHalide = false,
         bool withCpuOCV = true,
@@ -290,4 +291,103 @@ static testing::internal::ParamGenerator<tuple<Backend, Target> > dnnBackendsAnd
 
 } // namespace
 
+
+namespace opencv_test {
+using namespace cv::dnn;
+
+static inline
+testing::internal::ParamGenerator<Target> availableDnnTargets()
+{
+    static std::vector<Target> targets;
+    if (targets.empty())
+    {
+        targets.push_back(DNN_TARGET_CPU);
+#ifdef HAVE_OPENCL
+        if (cv::ocl::useOpenCL())
+            targets.push_back(DNN_TARGET_OPENCL);
+#endif
+    }
+    return testing::ValuesIn(targets);
+}
+
+class DNNTestLayer : public TestWithParam<tuple<Backend, Target> >
+{
+public:
+    dnn::Backend backend;
+    dnn::Target target;
+    double default_l1, default_lInf;
+
+    DNNTestLayer()
+    {
+        backend = (dnn::Backend)(int)get<0>(GetParam());
+        target = (dnn::Target)(int)get<1>(GetParam());
+        getDefaultThresholds(backend, target, &default_l1, &default_lInf);
+    }
+
+   static void getDefaultThresholds(int backend, int target, double* l1, double* lInf)
+   {
+       if (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD)
+       {
+           *l1 = 4e-3;
+           *lInf = 2e-2;
+       }
+       else
+       {
+           *l1 = 1e-5;
+           *lInf = 1e-4;
+       }
+   }
+
+   static void checkBackend(int backend, int target, Mat* inp = 0, Mat* ref = 0)
+   {
+       if (backend == DNN_BACKEND_OPENCV && (target == DNN_TARGET_OPENCL || target == DNN_TARGET_OPENCL_FP16))
+       {
+#ifdef HAVE_OPENCL
+           if (!cv::ocl::useOpenCL())
+#endif
+           {
+               throw SkipTestException("OpenCL is not available/disabled in OpenCV");
+           }
+       }
+       if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+       {
+           if (!checkMyriadTarget())
+           {
+               throw SkipTestException("Myriad is not available/disabled in OpenCV");
+           }
+#if defined(INF_ENGINE_RELEASE) && INF_ENGINE_RELEASE < 2018030000
+           if (inp && ref && inp->size[0] != 1)
+           {
+               // Myriad plugin supports only batch size 1. Slice a single sample.
+               if (inp->size[0] == ref->size[0])
+               {
+                   std::vector<cv::Range> range(inp->dims, Range::all());
+                   range[0] = Range(0, 1);
+                   *inp = inp->operator()(range);
+
+                   range = std::vector<cv::Range>(ref->dims, Range::all());
+                   range[0] = Range(0, 1);
+                   *ref = ref->operator()(range);
+               }
+               else
+                   throw SkipTestException("Myriad plugin supports only batch size 1");
+           }
+#else
+           if (inp && ref && inp->dims == 4 && ref->dims == 4 &&
+               inp->size[0] != 1 && inp->size[0] != ref->size[0])
+               throw SkipTestException("Inconsistent batch size of input and output blobs for Myriad plugin");
+
+#endif
+       }
+   }
+
+protected:
+    void checkBackend(Mat* inp = 0, Mat* ref = 0)
+    {
+        checkBackend(backend, target, inp, ref);
+    }
+};
+
+} // namespace
+
 #endif

modules/dnn/test/test_darknet_importer.cpp

@@ -306,6 +306,9 @@ TEST_P(Test_Darknet_nets, TinyYoloVoc)
     // batch size 1
     testDarknetModel(config_file, weights_file, ref.rowRange(0, 2), scoreDiff, iouDiff);
 
+#if defined(INF_ENGINE_RELEASE) && INF_ENGINE_RELEASE == 2018040000
+    if (backend == DNN_BACKEND_INFERENCE_ENGINE && target != DNN_TARGET_MYRIAD)
+#endif
     // batch size 2
     testDarknetModel(config_file, weights_file, ref, scoreDiff, iouDiff);
 }

modules/dnn/test/test_halide_layers.cpp

@@ -166,6 +166,11 @@ TEST_P(Deconvolution, Accuracy)
     if (backendId == DNN_BACKEND_INFERENCE_ENGINE && targetId == DNN_TARGET_CPU &&
         dilation.width == 2 && dilation.height == 2)
         throw SkipTestException("");
+#if defined(INF_ENGINE_RELEASE) && INF_ENGINE_RELEASE == 2018040000
+    if (backendId == DNN_BACKEND_INFERENCE_ENGINE && targetId == DNN_TARGET_CPU &&
+        hasBias && group != 1)
+        throw SkipTestException("Test is disabled for OpenVINO 2018R4");
+#endif
 
     int sz[] = {inChannels, outChannels / group, kernel.height, kernel.width};
     Mat weights(4, &sz[0], CV_32F);

modules/dnn/test/test_ie_models.cpp

@@ -177,10 +177,20 @@ TEST_P(DNNTestOpenVINO, models)
     Target target = (dnn::Target)(int)get<0>(GetParam());
     std::string modelName = get<1>(GetParam());
 
+#ifdef INF_ENGINE_RELEASE
+#if INF_ENGINE_RELEASE <= 2018030000
     if (target == DNN_TARGET_MYRIAD && (modelName == "landmarks-regression-retail-0001" ||
                                         modelName == "semantic-segmentation-adas-0001" ||
                                         modelName == "face-reidentification-retail-0001"))
         throw SkipTestException("");
+#elif INF_ENGINE_RELEASE == 2018040000
+    if (modelName == "single-image-super-resolution-0034" ||
+        (target == DNN_TARGET_MYRIAD && (modelName == "license-plate-recognition-barrier-0001" ||
+                                         modelName == "landmarks-regression-retail-0009" ||
+                                          modelName == "semantic-segmentation-adas-0001")))
+        throw SkipTestException("");
+#endif
+#endif
 
     std::string precision = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? "FP16" : "FP32";
     std::string prefix = utils::fs::join("intel_models",

modules/dnn/test/test_layers.cpp

@@ -137,6 +137,10 @@ TEST_P(Test_Caffe_layers, Convolution)
 
 TEST_P(Test_Caffe_layers, DeConvolution)
 {
+#if defined(INF_ENGINE_RELEASE) && INF_ENGINE_RELEASE == 2018040000
+    if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_CPU)
+        throw SkipTestException("Test is disabled for OpenVINO 2018R4");
+#endif
     testLayerUsingCaffeModels("layer_deconvolution", true, false);
 }
 
@@ -558,7 +562,9 @@ TEST_P(Test_Caffe_layers, FasterRCNN_Proposal)
         normAssert(outs[i].rowRange(0, numDets), ref);
 
         if (numDets < outs[i].size[0])
+        {
             EXPECT_EQ(countNonZero(outs[i].rowRange(numDets, outs[i].size[0])), 0);
+        }
     }
 }
 

modules/dnn/test/test_misc.cpp

@@ -140,9 +140,9 @@ TEST(LayerFactory, custom_layers)
         net.setPreferableBackend(DNN_BACKEND_OPENCV);
         Mat output = net.forward();
 
-        if (i == 0)      EXPECT_EQ(output.at<float>(0), 1);
-        else if (i == 1) EXPECT_EQ(output.at<float>(0), 2);
-        else if (i == 2) EXPECT_EQ(output.at<float>(0), 1);
+        if (i == 0)      { EXPECT_EQ(output.at<float>(0), 1); }
+        else if (i == 1) { EXPECT_EQ(output.at<float>(0), 2); }
+        else if (i == 2) { EXPECT_EQ(output.at<float>(0), 1); }
     }
     LayerFactory::unregisterLayer("CustomType");
 }

modules/dnn/test/test_onnx_importer.cpp

@@ -68,6 +68,12 @@ TEST_P(Test_ONNX_layers, Convolution)
     testONNXModels("two_convolution");
 }
 
+TEST_P(Test_ONNX_layers, Deconvolution)
+{
+    testONNXModels("deconvolution");
+    testONNXModels("two_deconvolution");
+}
+
 TEST_P(Test_ONNX_layers, Dropout)
 {
     testONNXModels("dropout");
@@ -118,8 +124,8 @@ TEST_P(Test_ONNX_layers, Transpose)
 
 TEST_P(Test_ONNX_layers, Multiplication)
 {
-    if (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16 ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+    if ((backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16) ||
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD))
         throw SkipTestException("");
     testONNXModels("mul");
 }
@@ -296,7 +302,7 @@ TEST_P(Test_ONNX_nets, ResNet101_DUC_HDC)
 TEST_P(Test_ONNX_nets, TinyYolov2)
 {
     if (cvtest::skipUnstableTests ||
-        backend == DNN_BACKEND_INFERENCE_ENGINE && (target == DNN_TARGET_OPENCL || target == DNN_TARGET_OPENCL_FP16)) {
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && (target == DNN_TARGET_OPENCL || target == DNN_TARGET_OPENCL_FP16))) {
         throw SkipTestException("");
     }
     // output range: [-11; 8]

modules/dnn/test/test_precomp.hpp

@@ -49,100 +49,4 @@
 #include "opencv2/dnn.hpp"
 #include "test_common.hpp"
 
-namespace opencv_test {
-using namespace cv::dnn;
-
-static testing::internal::ParamGenerator<Target> availableDnnTargets()
-{
-    static std::vector<Target> targets;
-    if (targets.empty())
-    {
-        targets.push_back(DNN_TARGET_CPU);
-#ifdef HAVE_OPENCL
-        if (cv::ocl::useOpenCL())
-            targets.push_back(DNN_TARGET_OPENCL);
-#endif
-    }
-    return testing::ValuesIn(targets);
-}
-
-class DNNTestLayer : public TestWithParam<tuple<Backend, Target> >
-{
-public:
-    dnn::Backend backend;
-    dnn::Target target;
-    double default_l1, default_lInf;
-
-    DNNTestLayer()
-    {
-        backend = (dnn::Backend)(int)get<0>(GetParam());
-        target = (dnn::Target)(int)get<1>(GetParam());
-        getDefaultThresholds(backend, target, &default_l1, &default_lInf);
-    }
-
-   static void getDefaultThresholds(int backend, int target, double* l1, double* lInf)
-   {
-       if (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD)
-       {
-           *l1 = 4e-3;
-           *lInf = 2e-2;
-       }
-       else
-       {
-           *l1 = 1e-5;
-           *lInf = 1e-4;
-       }
-   }
-
-   static void checkBackend(int backend, int target, Mat* inp = 0, Mat* ref = 0)
-   {
-       if (backend == DNN_BACKEND_OPENCV && (target == DNN_TARGET_OPENCL || target == DNN_TARGET_OPENCL_FP16))
-       {
-#ifdef HAVE_OPENCL
-           if (!cv::ocl::useOpenCL())
-#endif
-           {
-               throw SkipTestException("OpenCL is not available/disabled in OpenCV");
-           }
-       }
-       if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
-       {
-           if (!checkMyriadTarget())
-           {
-               throw SkipTestException("Myriad is not available/disabled in OpenCV");
-           }
-#if defined(INF_ENGINE_RELEASE) && INF_ENGINE_RELEASE < 2018030000
-           if (inp && ref && inp->size[0] != 1)
-           {
-               // Myriad plugin supports only batch size 1. Slice a single sample.
-               if (inp->size[0] == ref->size[0])
-               {
-                   std::vector<cv::Range> range(inp->dims, Range::all());
-                   range[0] = Range(0, 1);
-                   *inp = inp->operator()(range);
-
-                   range = std::vector<cv::Range>(ref->dims, Range::all());
-                   range[0] = Range(0, 1);
-                   *ref = ref->operator()(range);
-               }
-               else
-                   throw SkipTestException("Myriad plugin supports only batch size 1");
-           }
-#else
-           if (inp && ref && inp->dims == 4 && ref->dims == 4 &&
-               inp->size[0] != 1 && inp->size[0] != ref->size[0])
-               throw SkipTestException("Inconsistent batch size of input and output blobs for Myriad plugin");
-
-#endif
-       }
-   }
-
-protected:
-    void checkBackend(Mat* inp = 0, Mat* ref = 0)
-    {
-        checkBackend(backend, target, inp, ref);
-    }
-};
-
-} // namespace
 #endif

modules/dnn/test/test_tf_importer.cpp

@@ -101,7 +101,9 @@ public:
 
             string dataConfig;
             if (hasText)
+            {
                 ASSERT_TRUE(readFileInMemory(netConfig, dataConfig));
+            }
 
             net = readNetFromTensorflow(dataModel.c_str(), dataModel.size(),
                                         dataConfig.c_str(), dataConfig.size());
@@ -473,7 +475,7 @@ TEST_P(Test_TensorFlow_nets, EAST_text_detection)
     double l1_geometry = default_l1, lInf_geometry = default_lInf;
     if (target == DNN_TARGET_OPENCL_FP16)
     {
-        lInf_scores = 0.11;
+        lInf_scores = backend == DNN_BACKEND_INFERENCE_ENGINE ? 0.16 : 0.11;
         l1_geometry = 0.28; lInf_geometry = 5.94;
     }
     else if (target == DNN_TARGET_MYRIAD)

modules/dnn/test/test_torch_importer.cpp

@@ -136,6 +136,10 @@ TEST_P(Test_Torch_layers, run_reshape_change_batch_size)
 
 TEST_P(Test_Torch_layers, run_reshape)
 {
+#if defined(INF_ENGINE_RELEASE) && INF_ENGINE_RELEASE == 2018040000
+    if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        throw SkipTestException("Test is disabled for OpenVINO 2018R4");
+#endif
     runTorchNet("net_reshape_batch");
     runTorchNet("net_reshape_channels", "", false, true);
 }
@@ -168,6 +172,10 @@ TEST_P(Test_Torch_layers, run_depth_concat)
 
 TEST_P(Test_Torch_layers, run_deconv)
 {
+#if defined(INF_ENGINE_RELEASE) && INF_ENGINE_RELEASE == 2018040000
+    if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        throw SkipTestException("Test is disabled for OpenVINO 2018R4");
+#endif
     runTorchNet("net_deconv");
 }
 

modules/features2d/test/test_matchers_algorithmic.cpp

@@ -595,4 +595,23 @@ TEST( Features2d_FlannBasedMatcher, read_write )
     EXPECT_EQ(ymlfile, out);
 }
 
+
+TEST(Features2d_DMatch, issue_11855)
+{
+    Mat sources = (Mat_<uchar>(2, 3) << 1, 1, 0,
+                                        1, 1, 1);
+    Mat targets = (Mat_<uchar>(2, 3) << 1, 1, 1,
+                                        0, 0, 0);
+
+    Ptr<BFMatcher> bf = BFMatcher::create(NORM_HAMMING, true);
+    vector<vector<DMatch> > match;
+    bf->knnMatch(sources, targets, match, 1, noArray(), true);
+
+    ASSERT_EQ((size_t)1, match.size());
+    ASSERT_EQ((size_t)1, match[0].size());
+    EXPECT_EQ(1, match[0][0].queryIdx);
+    EXPECT_EQ(0, match[0][0].trainIdx);
+    EXPECT_EQ(0.0f, match[0][0].distance);
+}
+
 }} // namespace

modules/imgproc/src/bilateral_filter.cpp

@@ -0,0 +1,759 @@
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000-2008, 2018, Intel Corporation, all rights reserved.
+// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
+// Copyright (C) 2014-2015, Itseez Inc., all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//
+//   * The name of the copyright holders may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "precomp.hpp"
+
+#include <vector>
+
+#include "opencv2/core/hal/intrin.hpp"
+#include "opencl_kernels_imgproc.hpp"
+
+/****************************************************************************************\
+                                   Bilateral Filtering
+\****************************************************************************************/
+
+namespace cv
+{
+
+class BilateralFilter_8u_Invoker :
+    public ParallelLoopBody
+{
+public:
+    BilateralFilter_8u_Invoker(Mat& _dest, const Mat& _temp, int _radius, int _maxk,
+        int* _space_ofs, float *_space_weight, float *_color_weight) :
+        temp(&_temp), dest(&_dest), radius(_radius),
+        maxk(_maxk), space_ofs(_space_ofs), space_weight(_space_weight), color_weight(_color_weight)
+    {
+    }
+
+    virtual void operator() (const Range& range) const CV_OVERRIDE
+    {
+        int i, j, cn = dest->channels(), k;
+        Size size = dest->size();
+
+        for( i = range.start; i < range.end; i++ )
+        {
+            const uchar* sptr = temp->ptr(i+radius) + radius*cn;
+            uchar* dptr = dest->ptr(i);
+
+            if( cn == 1 )
+            {
+                AutoBuffer<float> buf(alignSize(size.width, CV_SIMD_WIDTH) + size.width + CV_SIMD_WIDTH - 1);
+                memset(buf.data(), 0, buf.size() * sizeof(float));
+                float *sum = alignPtr(buf.data(), CV_SIMD_WIDTH);
+                float *wsum = sum + alignSize(size.width, CV_SIMD_WIDTH);
+                for( k = 0; k < maxk; k++ )
+                {
+                    const uchar* ksptr = sptr + space_ofs[k];
+                    j = 0;
+#if CV_SIMD
+                    v_float32 kweight = vx_setall_f32(space_weight[k]);
+                    for (; j <= size.width - v_float32::nlanes; j += v_float32::nlanes)
+                    {
+                        v_uint32 val = vx_load_expand_q(ksptr + j);
+                        v_float32 w = kweight * v_lut(color_weight, v_reinterpret_as_s32(v_absdiff(val, vx_load_expand_q(sptr + j))));
+                        v_store_aligned(wsum + j, vx_load_aligned(wsum + j) + w);
+                        v_store_aligned(sum + j, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val)), w, vx_load_aligned(sum + j)));
+                    }
+#endif
+                    for (; j < size.width; j++)
+                    {
+                        int val = ksptr[j];
+                        float w = space_weight[k] * color_weight[std::abs(val - sptr[j])];
+                        wsum[j] += w;
+                        sum[j] += val * w;
+                    }
+                }
+                j = 0;
+#if CV_SIMD
+                for (; j <= size.width - 2*v_float32::nlanes; j += 2*v_float32::nlanes)
+                    v_pack_u_store(dptr + j, v_pack(v_round(vx_load_aligned(sum + j                    ) / vx_load_aligned(wsum + j                    )),
+                                                    v_round(vx_load_aligned(sum + j + v_float32::nlanes) / vx_load_aligned(wsum + j + v_float32::nlanes))));
+#endif
+                for (; j < size.width; j++)
+                {
+                    // overflow is not possible here => there is no need to use cv::saturate_cast
+                    CV_DbgAssert(fabs(wsum[j]) > 0);
+                    dptr[j] = (uchar)cvRound(sum[j]/wsum[j]);
+                }
+            }
+            else
+            {
+                assert( cn == 3 );
+                AutoBuffer<float> buf(alignSize(size.width, CV_SIMD_WIDTH)*3 + size.width + CV_SIMD_WIDTH - 1);
+                memset(buf.data(), 0, buf.size() * sizeof(float));
+                float *sum_b = alignPtr(buf.data(), CV_SIMD_WIDTH);
+                float *sum_g = sum_b + alignSize(size.width, CV_SIMD_WIDTH);
+                float *sum_r = sum_g + alignSize(size.width, CV_SIMD_WIDTH);
+                float *wsum = sum_r + alignSize(size.width, CV_SIMD_WIDTH);
+                for(k = 0; k < maxk; k++ )
+                {
+                    const uchar* ksptr = sptr + space_ofs[k];
+                    const uchar* rsptr = sptr;
+                    j = 0;
+#if CV_SIMD
+                    v_float32 kweight = vx_setall_f32(space_weight[k]);
+                    for (; j <= size.width - v_uint8::nlanes; j += v_uint8::nlanes, ksptr += 3*v_uint8::nlanes, rsptr += 3*v_uint8::nlanes)
+                    {
+                        v_uint8 kb, kg, kr, rb, rg, rr;
+                        v_load_deinterleave(ksptr, kb, kg, kr);
+                        v_load_deinterleave(rsptr, rb, rg, rr);
+
+                        v_uint16 b_l, b_h, g_l, g_h, r_l, r_h;
+                        v_expand(v_absdiff(kb, rb), b_l, b_h);
+                        v_expand(v_absdiff(kg, rg), g_l, g_h);
+                        v_expand(v_absdiff(kr, rr), r_l, r_h);
+
+                        v_uint32 val0, val1, val2, val3;
+                        v_expand(b_l + g_l + r_l, val0, val1);
+                        v_expand(b_h + g_h + r_h, val2, val3);
+
+                        v_expand(kb, b_l, b_h);
+                        v_expand(kg, g_l, g_h);
+                        v_expand(kr, r_l, r_h);
+
+                        v_float32 w0 = kweight * v_lut(color_weight, v_reinterpret_as_s32(val0));
+                        v_float32 w1 = kweight * v_lut(color_weight, v_reinterpret_as_s32(val1));
+                        v_float32 w2 = kweight * v_lut(color_weight, v_reinterpret_as_s32(val2));
+                        v_float32 w3 = kweight * v_lut(color_weight, v_reinterpret_as_s32(val3));
+                        v_store_aligned(wsum + j                      , w0 + vx_load_aligned(wsum + j));
+                        v_store_aligned(wsum + j +   v_float32::nlanes, w1 + vx_load_aligned(wsum + j + v_float32::nlanes));
+                        v_store_aligned(wsum + j + 2*v_float32::nlanes, w2 + vx_load_aligned(wsum + j + 2*v_float32::nlanes));
+                        v_store_aligned(wsum + j + 3*v_float32::nlanes, w3 + vx_load_aligned(wsum + j + 3*v_float32::nlanes));
+                        v_expand(b_l, val0, val1);
+                        v_expand(b_h, val2, val3);
+                        v_store_aligned(sum_b + j                      , v_muladd(v_cvt_f32(v_reinterpret_as_s32(val0)), w0, vx_load_aligned(sum_b + j)));
+                        v_store_aligned(sum_b + j +   v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val1)), w1, vx_load_aligned(sum_b + j + v_float32::nlanes)));
+                        v_store_aligned(sum_b + j + 2*v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val2)), w2, vx_load_aligned(sum_b + j + 2*v_float32::nlanes)));
+                        v_store_aligned(sum_b + j + 3*v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val3)), w3, vx_load_aligned(sum_b + j + 3*v_float32::nlanes)));
+                        v_expand(g_l, val0, val1);
+                        v_expand(g_h, val2, val3);
+                        v_store_aligned(sum_g + j                      , v_muladd(v_cvt_f32(v_reinterpret_as_s32(val0)), w0, vx_load_aligned(sum_g + j)));
+                        v_store_aligned(sum_g + j +   v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val1)), w1, vx_load_aligned(sum_g + j + v_float32::nlanes)));
+                        v_store_aligned(sum_g + j + 2*v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val2)), w2, vx_load_aligned(sum_g + j + 2*v_float32::nlanes)));
+                        v_store_aligned(sum_g + j + 3*v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val3)), w3, vx_load_aligned(sum_g + j + 3*v_float32::nlanes)));
+                        v_expand(r_l, val0, val1);
+                        v_expand(r_h, val2, val3);
+                        v_store_aligned(sum_r + j                      , v_muladd(v_cvt_f32(v_reinterpret_as_s32(val0)), w0, vx_load_aligned(sum_r + j)));
+                        v_store_aligned(sum_r + j +   v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val1)), w1, vx_load_aligned(sum_r + j + v_float32::nlanes)));
+                        v_store_aligned(sum_r + j + 2*v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val2)), w2, vx_load_aligned(sum_r + j + 2*v_float32::nlanes)));
+                        v_store_aligned(sum_r + j + 3*v_float32::nlanes, v_muladd(v_cvt_f32(v_reinterpret_as_s32(val3)), w3, vx_load_aligned(sum_r + j + 3*v_float32::nlanes)));
+                    }
+#endif
+                    for(; j < size.width; j++, ksptr += 3, rsptr += 3)
+                    {
+                        int b = ksptr[0], g = ksptr[1], r = ksptr[2];
+                        float w = space_weight[k]*color_weight[std::abs(b - rsptr[0]) + std::abs(g - rsptr[1]) + std::abs(r - rsptr[2])];
+                        wsum[j] += w;
+                        sum_b[j] += b*w; sum_g[j] += g*w; sum_r[j] += r*w;
+                    }
+                }
+                j = 0;
+#if CV_SIMD
+                v_float32 v_one = vx_setall_f32(1.f);
+                for(; j <= size.width - v_uint8::nlanes; j += v_uint8::nlanes, dptr += 3*v_uint8::nlanes)
+                {
+                    v_float32 w0 = v_one / vx_load_aligned(wsum + j);
+                    v_float32 w1 = v_one / vx_load_aligned(wsum + j + v_float32::nlanes);
+                    v_float32 w2 = v_one / vx_load_aligned(wsum + j + 2*v_float32::nlanes);
+                    v_float32 w3 = v_one / vx_load_aligned(wsum + j + 3*v_float32::nlanes);
+
+                    v_store_interleave(dptr, v_pack_u(v_pack(v_round(w0 * vx_load_aligned(sum_b + j)),
+                                                             v_round(w1 * vx_load_aligned(sum_b + j + v_float32::nlanes))),
+                                                      v_pack(v_round(w2 * vx_load_aligned(sum_b + j + 2*v_float32::nlanes)),
+                                                             v_round(w3 * vx_load_aligned(sum_b + j + 3*v_float32::nlanes)))),
+                                             v_pack_u(v_pack(v_round(w0 * vx_load_aligned(sum_g + j)),
+                                                             v_round(w1 * vx_load_aligned(sum_g + j + v_float32::nlanes))),
+                                                      v_pack(v_round(w2 * vx_load_aligned(sum_g + j + 2*v_float32::nlanes)),
+                                                             v_round(w3 * vx_load_aligned(sum_g + j + 3*v_float32::nlanes)))),
+                                             v_pack_u(v_pack(v_round(w0 * vx_load_aligned(sum_r + j)),
+                                                             v_round(w1 * vx_load_aligned(sum_r + j + v_float32::nlanes))),
+                                                      v_pack(v_round(w2 * vx_load_aligned(sum_r + j + 2*v_float32::nlanes)),
+                                                             v_round(w3 * vx_load_aligned(sum_r + j + 3*v_float32::nlanes)))));
+                }
+#endif
+                for(; j < size.width; j++)
+                {
+                    CV_DbgAssert(fabs(wsum[j]) > 0);
+                    wsum[j] = 1.f/wsum[j];
+                    *(dptr++) = (uchar)cvRound(sum_b[j]*wsum[j]);
+                    *(dptr++) = (uchar)cvRound(sum_g[j]*wsum[j]);
+                    *(dptr++) = (uchar)cvRound(sum_r[j]*wsum[j]);
+                }
+            }
+        }
+#if CV_SIMD
+        vx_cleanup();
+#endif
+    }
+
+private:
+    const Mat *temp;
+    Mat *dest;
+    int radius, maxk, *space_ofs;
+    float *space_weight, *color_weight;
+};
+
+#ifdef HAVE_OPENCL
+
+static bool ocl_bilateralFilter_8u(InputArray _src, OutputArray _dst, int d,
+                                   double sigma_color, double sigma_space,
+                                   int borderType)
+{
+#ifdef __ANDROID__
+    if (ocl::Device::getDefault().isNVidia())
+        return false;
+#endif
+
+    int type = _src.type(), depth = CV_MAT_DEPTH(type), cn = CV_MAT_CN(type);
+    int i, j, maxk, radius;
+
+    if (depth != CV_8U || cn > 4)
+        return false;
+
+    if (sigma_color <= 0)
+        sigma_color = 1;
+    if (sigma_space <= 0)
+        sigma_space = 1;
+
+    double gauss_color_coeff = -0.5 / (sigma_color * sigma_color);
+    double gauss_space_coeff = -0.5 / (sigma_space * sigma_space);
+
+    if ( d <= 0 )
+        radius = cvRound(sigma_space * 1.5);
+    else
+        radius = d / 2;
+    radius = MAX(radius, 1);
+    d = radius * 2 + 1;
+
+    UMat src = _src.getUMat(), dst = _dst.getUMat(), temp;
+    if (src.u == dst.u)
+        return false;
+
+    copyMakeBorder(src, temp, radius, radius, radius, radius, borderType);
+    std::vector<float> _space_weight(d * d);
+    std::vector<int> _space_ofs(d * d);
+    float * const space_weight = &_space_weight[0];
+    int * const space_ofs = &_space_ofs[0];
+
+    // initialize space-related bilateral filter coefficients
+    for( i = -radius, maxk = 0; i <= radius; i++ )
+        for( j = -radius; j <= radius; j++ )
+        {
+            double r = std::sqrt((double)i * i + (double)j * j);
+            if ( r > radius )
+                continue;
+            space_weight[maxk] = (float)std::exp(r * r * gauss_space_coeff);
+            space_ofs[maxk++] = (int)(i * temp.step + j * cn);
+        }
+
+    char cvt[3][40];
+    String cnstr = cn > 1 ? format("%d", cn) : "";
+    String kernelName("bilateral");
+    size_t sizeDiv = 1;
+    if ((ocl::Device::getDefault().isIntel()) &&
+        (ocl::Device::getDefault().type() == ocl::Device::TYPE_GPU))
+    {
+            //Intel GPU
+            if (dst.cols % 4 == 0 && cn == 1) // For single channel x4 sized images.
+            {
+                kernelName = "bilateral_float4";
+                sizeDiv = 4;
+            }
+     }
+     ocl::Kernel k(kernelName.c_str(), ocl::imgproc::bilateral_oclsrc,
+            format("-D radius=%d -D maxk=%d -D cn=%d -D int_t=%s -D uint_t=uint%s -D convert_int_t=%s"
+            " -D uchar_t=%s -D float_t=%s -D convert_float_t=%s -D convert_uchar_t=%s -D gauss_color_coeff=(float)%f",
+            radius, maxk, cn, ocl::typeToStr(CV_32SC(cn)), cnstr.c_str(),
+            ocl::convertTypeStr(CV_8U, CV_32S, cn, cvt[0]),
+            ocl::typeToStr(type), ocl::typeToStr(CV_32FC(cn)),
+            ocl::convertTypeStr(CV_32S, CV_32F, cn, cvt[1]),
+            ocl::convertTypeStr(CV_32F, CV_8U, cn, cvt[2]), gauss_color_coeff));
+    if (k.empty())
+        return false;
+
+    Mat mspace_weight(1, d * d, CV_32FC1, space_weight);
+    Mat mspace_ofs(1, d * d, CV_32SC1, space_ofs);
+    UMat ucolor_weight, uspace_weight, uspace_ofs;
+
+    mspace_weight.copyTo(uspace_weight);
+    mspace_ofs.copyTo(uspace_ofs);
+
+    k.args(ocl::KernelArg::ReadOnlyNoSize(temp), ocl::KernelArg::WriteOnly(dst),
+           ocl::KernelArg::PtrReadOnly(uspace_weight),
+           ocl::KernelArg::PtrReadOnly(uspace_ofs));
+
+    size_t globalsize[2] = { (size_t)dst.cols / sizeDiv, (size_t)dst.rows };
+    return k.run(2, globalsize, NULL, false);
+}
+
+#endif
+static void
+bilateralFilter_8u( const Mat& src, Mat& dst, int d,
+    double sigma_color, double sigma_space,
+    int borderType )
+{
+    int cn = src.channels();
+    int i, j, maxk, radius;
+    Size size = src.size();
+
+    CV_Assert( (src.type() == CV_8UC1 || src.type() == CV_8UC3) && src.data != dst.data );
+
+    if( sigma_color <= 0 )
+        sigma_color = 1;
+    if( sigma_space <= 0 )
+        sigma_space = 1;
+
+    double gauss_color_coeff = -0.5/(sigma_color*sigma_color);
+    double gauss_space_coeff = -0.5/(sigma_space*sigma_space);
+
+    if( d <= 0 )
+        radius = cvRound(sigma_space*1.5);
+    else
+        radius = d/2;
+    radius = MAX(radius, 1);
+    d = radius*2 + 1;
+
+    Mat temp;
+    copyMakeBorder( src, temp, radius, radius, radius, radius, borderType );
+
+    std::vector<float> _color_weight(cn*256);
+    std::vector<float> _space_weight(d*d);
+    std::vector<int> _space_ofs(d*d);
+    float* color_weight = &_color_weight[0];
+    float* space_weight = &_space_weight[0];
+    int* space_ofs = &_space_ofs[0];
+
+    // initialize color-related bilateral filter coefficients
+
+    for( i = 0; i < 256*cn; i++ )
+        color_weight[i] = (float)std::exp(i*i*gauss_color_coeff);
+
+    // initialize space-related bilateral filter coefficients
+    for( i = -radius, maxk = 0; i <= radius; i++ )
+    {
+        j = -radius;
+
+        for( ; j <= radius; j++ )
+        {
+            double r = std::sqrt((double)i*i + (double)j*j);
+            if( r > radius )
+                continue;
+            space_weight[maxk] = (float)std::exp(r*r*gauss_space_coeff);
+            space_ofs[maxk++] = (int)(i*temp.step + j*cn);
+        }
+    }
+
+    BilateralFilter_8u_Invoker body(dst, temp, radius, maxk, space_ofs, space_weight, color_weight);
+    parallel_for_(Range(0, size.height), body, dst.total()/(double)(1<<16));
+}
+
+
+class BilateralFilter_32f_Invoker :
+    public ParallelLoopBody
+{
+public:
+
+    BilateralFilter_32f_Invoker(int _cn, int _radius, int _maxk, int *_space_ofs,
+        const Mat& _temp, Mat& _dest, float _scale_index, float *_space_weight, float *_expLUT) :
+        cn(_cn), radius(_radius), maxk(_maxk), space_ofs(_space_ofs),
+        temp(&_temp), dest(&_dest), scale_index(_scale_index), space_weight(_space_weight), expLUT(_expLUT)
+    {
+    }
+
+    virtual void operator() (const Range& range) const CV_OVERRIDE
+    {
+        int i, j, k;
+        Size size = dest->size();
+
+        for( i = range.start; i < range.end; i++ )
+        {
+            const float* sptr = temp->ptr<float>(i+radius) + radius*cn;
+            float* dptr = dest->ptr<float>(i);
+
+            if( cn == 1 )
+            {
+                AutoBuffer<float> buf(alignSize(size.width, CV_SIMD_WIDTH) + size.width + CV_SIMD_WIDTH - 1);
+                memset(buf.data(), 0, buf.size() * sizeof(float));
+                float *sum = alignPtr(buf.data(), CV_SIMD_WIDTH);
+                float *wsum = sum + alignSize(size.width, CV_SIMD_WIDTH);
+#if CV_SIMD
+                v_float32 v_one = vx_setall_f32(1.f);
+                v_float32 sindex = vx_setall_f32(scale_index);
+#endif
+                for( k = 0; k < maxk; k++ )
+                {
+                    const float* ksptr = sptr + space_ofs[k];
+                    j = 0;
+#if CV_SIMD
+                    v_float32 kweight = vx_setall_f32(space_weight[k]);
+                    for (; j <= size.width - v_float32::nlanes; j += v_float32::nlanes)
+                    {
+                        v_float32 val = vx_load(ksptr + j);
+
+                        v_float32 alpha = v_absdiff(val, vx_load(sptr + j)) * sindex;
+                        v_int32 idx = v_trunc(alpha);
+                        alpha -= v_cvt_f32(idx);
+
+                        v_float32 w = kweight * v_muladd(v_lut(expLUT + 1, idx), alpha, v_lut(expLUT, idx) * (v_one-alpha));
+                        v_store_aligned(wsum + j, vx_load_aligned(wsum + j) + w);
+                        v_store_aligned(sum + j, v_muladd(val, w, vx_load_aligned(sum + j)));
+                    }
+#endif
+                    for (; j < size.width; j++)
+                    {
+                        float val = ksptr[j];
+                        float alpha = std::abs(val - sptr[j]) * scale_index;
+                        int idx = cvFloor(alpha);
+                        alpha -= idx;
+                        float w = space_weight[k] * (expLUT[idx] + alpha*(expLUT[idx+1] - expLUT[idx]));
+                        wsum[j] += w;
+                        sum[j] += val * w;
+                    }
+                }
+                j = 0;
+#if CV_SIMD
+                for (; j <= size.width - v_float32::nlanes; j += v_float32::nlanes)
+                    v_store(dptr + j, vx_load_aligned(sum + j) / vx_load_aligned(wsum + j));
+#endif
+                for (; j < size.width; j++)
+                {
+                    CV_DbgAssert(fabs(wsum[j]) > 0);
+                    dptr[j] = sum[j] / wsum[j];
+                }
+            }
+            else
+            {
+                CV_Assert( cn == 3 );
+                AutoBuffer<float> buf(alignSize(size.width, CV_SIMD_WIDTH)*3 + size.width + CV_SIMD_WIDTH - 1);
+                memset(buf.data(), 0, buf.size() * sizeof(float));
+                float *sum_b = alignPtr(buf.data(), CV_SIMD_WIDTH);
+                float *sum_g = sum_b + alignSize(size.width, CV_SIMD_WIDTH);
+                float *sum_r = sum_g + alignSize(size.width, CV_SIMD_WIDTH);
+                float *wsum = sum_r + alignSize(size.width, CV_SIMD_WIDTH);
+#if CV_SIMD
+                v_float32 v_one = vx_setall_f32(1.f);
+                v_float32 sindex = vx_setall_f32(scale_index);
+#endif
+                for (k = 0; k < maxk; k++)
+                {
+                    const float* ksptr = sptr + space_ofs[k];
+                    const float* rsptr = sptr;
+                    j = 0;
+#if CV_SIMD
+                    v_float32 kweight = vx_setall_f32(space_weight[k]);
+                    for (; j <= size.width - v_float32::nlanes; j += v_float32::nlanes, ksptr += 3*v_float32::nlanes, rsptr += 3*v_float32::nlanes)
+                    {
+                        v_float32 kb, kg, kr, rb, rg, rr;
+                        v_load_deinterleave(ksptr, kb, kg, kr);
+                        v_load_deinterleave(rsptr, rb, rg, rr);
+
+                        v_float32 alpha = (v_absdiff(kb, rb) + v_absdiff(kg, rg) + v_absdiff(kr, rr)) * sindex;
+                        v_int32 idx = v_trunc(alpha);
+                        alpha -= v_cvt_f32(idx);
+
+                        v_float32 w = kweight * v_muladd(v_lut(expLUT + 1, idx), alpha, v_lut(expLUT, idx) * (v_one - alpha));
+                        v_store_aligned(wsum + j, vx_load_aligned(wsum + j) + w);
+                        v_store_aligned(sum_b + j, v_muladd(kb, w, vx_load_aligned(sum_b + j)));
+                        v_store_aligned(sum_g + j, v_muladd(kg, w, vx_load_aligned(sum_g + j)));
+                        v_store_aligned(sum_r + j, v_muladd(kr, w, vx_load_aligned(sum_r + j)));
+                    }
+#endif
+                    for (; j < size.width; j++, ksptr += 3, rsptr += 3)
+                    {
+                        float b = ksptr[0], g = ksptr[1], r = ksptr[2];
+                        float alpha = (std::abs(b - rsptr[0]) + std::abs(g - rsptr[1]) + std::abs(r - rsptr[2])) * scale_index;
+                        int idx = cvFloor(alpha);
+                        alpha -= idx;
+                        float w = space_weight[k] * (expLUT[idx] + alpha*(expLUT[idx + 1] - expLUT[idx]));
+                        wsum[j] += w;
+                        sum_b[j] += b*w;
+                        sum_g[j] += g*w;
+                        sum_r[j] += r*w;
+                    }
+                }
+                j = 0;
+#if CV_SIMD
+                for (; j <= size.width - v_float32::nlanes; j += v_float32::nlanes, dptr += 3*v_float32::nlanes)
+                {
+                    v_float32 w = v_one / vx_load_aligned(wsum + j);
+                    v_store_interleave(dptr, vx_load_aligned(sum_b + j) * w, vx_load_aligned(sum_g + j) * w, vx_load_aligned(sum_r + j) * w);
+                }
+#endif
+                for (; j < size.width; j++)
+                {
+                    CV_DbgAssert(fabs(wsum[j]) > 0);
+                    wsum[j] = 1.f / wsum[j];
+                    *(dptr++) = sum_b[j] * wsum[j];
+                    *(dptr++) = sum_g[j] * wsum[j];
+                    *(dptr++) = sum_r[j] * wsum[j];
+                }
+            }
+        }
+#if CV_SIMD
+        vx_cleanup();
+#endif
+    }
+
+private:
+    int cn, radius, maxk, *space_ofs;
+    const Mat* temp;
+    Mat *dest;
+    float scale_index, *space_weight, *expLUT;
+};
+
+
+static void
+bilateralFilter_32f( const Mat& src, Mat& dst, int d,
+                     double sigma_color, double sigma_space,
+                     int borderType )
+{
+    int cn = src.channels();
+    int i, j, maxk, radius;
+    double minValSrc=-1, maxValSrc=1;
+    const int kExpNumBinsPerChannel = 1 << 12;
+    int kExpNumBins = 0;
+    float lastExpVal = 1.f;
+    float len, scale_index;
+    Size size = src.size();
+
+    CV_Assert( (src.type() == CV_32FC1 || src.type() == CV_32FC3) && src.data != dst.data );
+
+    if( sigma_color <= 0 )
+        sigma_color = 1;
+    if( sigma_space <= 0 )
+        sigma_space = 1;
+
+    double gauss_color_coeff = -0.5/(sigma_color*sigma_color);
+    double gauss_space_coeff = -0.5/(sigma_space*sigma_space);
+
+    if( d <= 0 )
+        radius = cvRound(sigma_space*1.5);
+    else
+        radius = d/2;
+    radius = MAX(radius, 1);
+    d = radius*2 + 1;
+    // compute the min/max range for the input image (even if multichannel)
+
+    minMaxLoc( src.reshape(1), &minValSrc, &maxValSrc );
+    if(std::abs(minValSrc - maxValSrc) < FLT_EPSILON)
+    {
+        src.copyTo(dst);
+        return;
+    }
+
+    // temporary copy of the image with borders for easy processing
+    Mat temp;
+    copyMakeBorder( src, temp, radius, radius, radius, radius, borderType );
+    minValSrc -= 5. * sigma_color;
+    patchNaNs( temp, minValSrc ); // this replacement of NaNs makes the assumption that depth values are nonnegative
+                                  // TODO: make replacement parameter avalible in the outside function interface
+    // allocate lookup tables
+    std::vector<float> _space_weight(d*d);
+    std::vector<int> _space_ofs(d*d);
+    float* space_weight = &_space_weight[0];
+    int* space_ofs = &_space_ofs[0];
+
+    // assign a length which is slightly more than needed
+    len = (float)(maxValSrc - minValSrc) * cn;
+    kExpNumBins = kExpNumBinsPerChannel * cn;
+    std::vector<float> _expLUT(kExpNumBins+2);
+    float* expLUT = &_expLUT[0];
+
+    scale_index = kExpNumBins/len;
+
+    // initialize the exp LUT
+    for( i = 0; i < kExpNumBins+2; i++ )
+    {
+        if( lastExpVal > 0.f )
+        {
+            double val =  i / scale_index;
+            expLUT[i] = (float)std::exp(val * val * gauss_color_coeff);
+            lastExpVal = expLUT[i];
+        }
+        else
+            expLUT[i] = 0.f;
+    }
+
+    // initialize space-related bilateral filter coefficients
+    for( i = -radius, maxk = 0; i <= radius; i++ )
+        for( j = -radius; j <= radius; j++ )
+        {
+            double r = std::sqrt((double)i*i + (double)j*j);
+            if( r > radius )
+                continue;
+            space_weight[maxk] = (float)std::exp(r*r*gauss_space_coeff);
+            space_ofs[maxk++] = (int)(i*(temp.step/sizeof(float)) + j*cn);
+        }
+
+    // parallel_for usage
+
+    BilateralFilter_32f_Invoker body(cn, radius, maxk, space_ofs, temp, dst, scale_index, space_weight, expLUT);
+    parallel_for_(Range(0, size.height), body, dst.total()/(double)(1<<16));
+}
+
+#ifdef HAVE_IPP
+#define IPP_BILATERAL_PARALLEL 1
+
+#ifdef HAVE_IPP_IW
+class ipp_bilateralFilterParallel: public ParallelLoopBody
+{
+public:
+    ipp_bilateralFilterParallel(::ipp::IwiImage &_src, ::ipp::IwiImage &_dst, int _radius, Ipp32f _valSquareSigma, Ipp32f _posSquareSigma, ::ipp::IwiBorderType _borderType, bool *_ok):
+        src(_src), dst(_dst)
+    {
+        pOk = _ok;
+
+        radius          = _radius;
+        valSquareSigma  = _valSquareSigma;
+        posSquareSigma  = _posSquareSigma;
+        borderType      = _borderType;
+
+        *pOk = true;
+    }
+    ~ipp_bilateralFilterParallel() {}
+
+    virtual void operator() (const Range& range) const CV_OVERRIDE
+    {
+        if(*pOk == false)
+            return;
+
+        try
+        {
+            ::ipp::IwiTile tile = ::ipp::IwiRoi(0, range.start, dst.m_size.width, range.end - range.start);
+            CV_INSTRUMENT_FUN_IPP(::ipp::iwiFilterBilateral, src, dst, radius, valSquareSigma, posSquareSigma, ::ipp::IwDefault(), borderType, tile);
+        }
+        catch(const ::ipp::IwException &)
+        {
+            *pOk = false;
+            return;
+        }
+    }
+private:
+    ::ipp::IwiImage &src;
+    ::ipp::IwiImage &dst;
+
+    int                  radius;
+    Ipp32f               valSquareSigma;
+    Ipp32f               posSquareSigma;
+    ::ipp::IwiBorderType borderType;
+
+    bool  *pOk;
+    const ipp_bilateralFilterParallel& operator= (const ipp_bilateralFilterParallel&);
+};
+#endif
+
+static bool ipp_bilateralFilter(Mat &src, Mat &dst, int d, double sigmaColor, double sigmaSpace, int borderType)
+{
+#ifdef HAVE_IPP_IW
+    CV_INSTRUMENT_REGION_IPP();
+
+    int         radius         = IPP_MAX(((d <= 0)?cvRound(sigmaSpace*1.5):d/2), 1);
+    Ipp32f      valSquareSigma = (Ipp32f)((sigmaColor <= 0)?1:sigmaColor*sigmaColor);
+    Ipp32f      posSquareSigma = (Ipp32f)((sigmaSpace <= 0)?1:sigmaSpace*sigmaSpace);
+
+    // Acquire data and begin processing
+    try
+    {
+        ::ipp::IwiImage      iwSrc = ippiGetImage(src);
+        ::ipp::IwiImage      iwDst = ippiGetImage(dst);
+        ::ipp::IwiBorderSize borderSize(radius);
+        ::ipp::IwiBorderType ippBorder(ippiGetBorder(iwSrc, borderType, borderSize));
+        if(!ippBorder)
+            return false;
+
+        const int threads = ippiSuggestThreadsNum(iwDst, 2);
+        if(IPP_BILATERAL_PARALLEL && threads > 1) {
+            bool  ok      = true;
+            Range range(0, (int)iwDst.m_size.height);
+            ipp_bilateralFilterParallel invoker(iwSrc, iwDst, radius, valSquareSigma, posSquareSigma, ippBorder, &ok);
+            if(!ok)
+                return false;
+
+            parallel_for_(range, invoker, threads*4);
+
+            if(!ok)
+                return false;
+        } else {
+            CV_INSTRUMENT_FUN_IPP(::ipp::iwiFilterBilateral, iwSrc, iwDst, radius, valSquareSigma, posSquareSigma, ::ipp::IwDefault(), ippBorder);
+        }
+    }
+    catch (const ::ipp::IwException &)
+    {
+        return false;
+    }
+    return true;
+#else
+    CV_UNUSED(src); CV_UNUSED(dst); CV_UNUSED(d); CV_UNUSED(sigmaColor); CV_UNUSED(sigmaSpace); CV_UNUSED(borderType);
+    return false;
+#endif
+}
+#endif
+
+}
+
+void cv::bilateralFilter( InputArray _src, OutputArray _dst, int d,
+                      double sigmaColor, double sigmaSpace,
+                      int borderType )
+{
+    CV_INSTRUMENT_REGION();
+
+    _dst.create( _src.size(), _src.type() );
+
+    CV_OCL_RUN(_src.dims() <= 2 && _dst.isUMat(),
+               ocl_bilateralFilter_8u(_src, _dst, d, sigmaColor, sigmaSpace, borderType))
+
+    Mat src = _src.getMat(), dst = _dst.getMat();
+
+    CV_IPP_RUN_FAST(ipp_bilateralFilter(src, dst, d, sigmaColor, sigmaSpace, borderType));
+
+    if( src.depth() == CV_8U )
+        bilateralFilter_8u( src, dst, d, sigmaColor, sigmaSpace, borderType );
+    else if( src.depth() == CV_32F )
+        bilateralFilter_32f( src, dst, d, sigmaColor, sigmaSpace, borderType );
+    else
+        CV_Error( CV_StsUnsupportedFormat,
+        "Bilateral filtering is only implemented for 8u and 32f images" );
+}
+
+/* End of file. */

modules/imgproc/src/smooth.cpp

@@ -2505,762 +2505,6 @@ void cv::GaussianBlur( InputArray _src, OutputArray _dst, Size ksize,
     sepFilter2D(src, dst, sdepth, kx, ky, Point(-1, -1), 0, borderType);
 }
 
-/****************************************************************************************\
-                                   Bilateral Filtering
-\****************************************************************************************/
-
-namespace cv
-{
-
-class BilateralFilter_8u_Invoker :
-    public ParallelLoopBody
-{
-public:
-    BilateralFilter_8u_Invoker(Mat& _dest, const Mat& _temp, int _radius, int _maxk,
-        int* _space_ofs, float *_space_weight, float *_color_weight) :
-        temp(&_temp), dest(&_dest), radius(_radius),
-        maxk(_maxk), space_ofs(_space_ofs), space_weight(_space_weight), color_weight(_color_weight)
-    {
-    }
-
-    virtual void operator() (const Range& range) const CV_OVERRIDE
-    {
-        int i, j, cn = dest->channels(), k;
-        Size size = dest->size();
-#if CV_SIMD128
-        int CV_DECL_ALIGNED(16) buf[4];
-        bool haveSIMD128 = hasSIMD128();
-#endif
-
-        for( i = range.start; i < range.end; i++ )
-        {
-            const uchar* sptr = temp->ptr(i+radius) + radius*cn;
-            uchar* dptr = dest->ptr(i);
-
-            if( cn == 1 )
-            {
-                for( j = 0; j < size.width; j++ )
-                {
-                    float sum = 0, wsum = 0;
-                    int val0 = sptr[j];
-                    k = 0;
-#if CV_SIMD128
-                    if( haveSIMD128 )
-                    {
-                        v_float32x4 _val0 = v_setall_f32(static_cast<float>(val0));
-                        v_float32x4 vsumw = v_setzero_f32();
-                        v_float32x4 vsumc = v_setzero_f32();
-
-                        for( ; k <= maxk - 4; k += 4 )
-                        {
-                            v_float32x4 _valF = v_float32x4(sptr[j + space_ofs[k]],
-                                sptr[j + space_ofs[k + 1]],
-                                sptr[j + space_ofs[k + 2]],
-                                sptr[j + space_ofs[k + 3]]);
-                            v_float32x4 _val = v_abs(_valF - _val0);
-                            v_store(buf, v_round(_val));
-
-                            v_float32x4 _cw = v_float32x4(color_weight[buf[0]],
-                                color_weight[buf[1]],
-                                color_weight[buf[2]],
-                                color_weight[buf[3]]);
-                            v_float32x4 _sw = v_load(space_weight+k);
-#if defined(_MSC_VER) && _MSC_VER == 1700/* MSVS 2012 */ && CV_AVX
-                            // details: https://github.com/opencv/opencv/issues/11004
-                            vsumw += _cw * _sw;
-                            vsumc += _cw * _sw * _valF;
-#else
-                            v_float32x4 _w = _cw * _sw;
-                            _cw = _w * _valF;
-
-                            vsumw += _w;
-                            vsumc += _cw;
-#endif
-                        }
-                        float *bufFloat = (float*)buf;
-                        v_float32x4 sum4 = v_reduce_sum4(vsumw, vsumc, vsumw, vsumc);
-                        v_store(bufFloat, sum4);
-                        sum += bufFloat[1];
-                        wsum += bufFloat[0];
-                    }
-#endif
-                    for( ; k < maxk; k++ )
-                    {
-                        int val = sptr[j + space_ofs[k]];
-                        float w = space_weight[k]*color_weight[std::abs(val - val0)];
-                        sum += val*w;
-                        wsum += w;
-                    }
-                    // overflow is not possible here => there is no need to use cv::saturate_cast
-                    CV_DbgAssert(fabs(wsum) > 0);
-                    dptr[j] = (uchar)cvRound(sum/wsum);
-                }
-            }
-            else
-            {
-                assert( cn == 3 );
-                for( j = 0; j < size.width*3; j += 3 )
-                {
-                    float sum_b = 0, sum_g = 0, sum_r = 0, wsum = 0;
-                    int b0 = sptr[j], g0 = sptr[j+1], r0 = sptr[j+2];
-                    k = 0;
-#if CV_SIMD128
-                    if( haveSIMD128 )
-                    {
-                        v_float32x4 vsumw = v_setzero_f32();
-                        v_float32x4 vsumb = v_setzero_f32();
-                        v_float32x4 vsumg = v_setzero_f32();
-                        v_float32x4 vsumr = v_setzero_f32();
-                        const v_float32x4 _b0 = v_setall_f32(static_cast<float>(b0));
-                        const v_float32x4 _g0 = v_setall_f32(static_cast<float>(g0));
-                        const v_float32x4 _r0 = v_setall_f32(static_cast<float>(r0));
-
-                        for( ; k <= maxk - 4; k += 4 )
-                        {
-                            const uchar* const sptr_k0  = sptr + j + space_ofs[k];
-                            const uchar* const sptr_k1  = sptr + j + space_ofs[k+1];
-                            const uchar* const sptr_k2  = sptr + j + space_ofs[k+2];
-                            const uchar* const sptr_k3  = sptr + j + space_ofs[k+3];
-
-                            v_float32x4 __b = v_cvt_f32(v_reinterpret_as_s32(v_load_expand_q(sptr_k0)));
-                            v_float32x4 __g = v_cvt_f32(v_reinterpret_as_s32(v_load_expand_q(sptr_k1)));
-                            v_float32x4 __r = v_cvt_f32(v_reinterpret_as_s32(v_load_expand_q(sptr_k2)));
-                            v_float32x4 __z = v_cvt_f32(v_reinterpret_as_s32(v_load_expand_q(sptr_k3)));
-                            v_float32x4 _b, _g, _r, _z;
-
-                            v_transpose4x4(__b, __g, __r, __z, _b, _g, _r, _z);
-
-                            v_float32x4 bt = v_abs(_b -_b0);
-                            v_float32x4 gt = v_abs(_g -_g0);
-                            v_float32x4 rt = v_abs(_r -_r0);
-
-                            bt = rt + bt + gt;
-                            v_store(buf, v_round(bt));
-
-                            v_float32x4 _w  = v_float32x4(color_weight[buf[0]],color_weight[buf[1]],
-                                                    color_weight[buf[2]],color_weight[buf[3]]);
-                            v_float32x4 _sw = v_load(space_weight+k);
-
-#if defined(_MSC_VER) && _MSC_VER == 1700/* MSVS 2012 */ && CV_AVX
-                            // details: https://github.com/opencv/opencv/issues/11004
-                            vsumw += _w * _sw;
-                            vsumb += _w * _sw * _b;
-                            vsumg += _w * _sw * _g;
-                            vsumr += _w * _sw * _r;
-#else
-                            _w *= _sw;
-                            _b *=  _w;
-                            _g *=  _w;
-                            _r *=  _w;
-
-                            vsumw += _w;
-                            vsumb += _b;
-                            vsumg += _g;
-                            vsumr += _r;
-#endif
-                        }
-                        float *bufFloat = (float*)buf;
-                        v_float32x4 sum4 = v_reduce_sum4(vsumw, vsumb, vsumg, vsumr);
-                        v_store(bufFloat, sum4);
-                        wsum += bufFloat[0];
-                        sum_b += bufFloat[1];
-                        sum_g += bufFloat[2];
-                        sum_r += bufFloat[3];
-                    }
-#endif
-
-                    for( ; k < maxk; k++ )
-                    {
-                        const uchar* sptr_k = sptr + j + space_ofs[k];
-                        int b = sptr_k[0], g = sptr_k[1], r = sptr_k[2];
-                        float w = space_weight[k]*color_weight[std::abs(b - b0) +
-                                                               std::abs(g - g0) + std::abs(r - r0)];
-                        sum_b += b*w; sum_g += g*w; sum_r += r*w;
-                        wsum += w;
-                    }
-                    CV_DbgAssert(fabs(wsum) > 0);
-                    wsum = 1.f/wsum;
-                    b0 = cvRound(sum_b*wsum);
-                    g0 = cvRound(sum_g*wsum);
-                    r0 = cvRound(sum_r*wsum);
-                    dptr[j] = (uchar)b0; dptr[j+1] = (uchar)g0; dptr[j+2] = (uchar)r0;
-                }
-            }
-        }
-    }
-
-private:
-    const Mat *temp;
-    Mat *dest;
-    int radius, maxk, *space_ofs;
-    float *space_weight, *color_weight;
-};
-
-#ifdef HAVE_OPENCL
-
-static bool ocl_bilateralFilter_8u(InputArray _src, OutputArray _dst, int d,
-                                   double sigma_color, double sigma_space,
-                                   int borderType)
-{
-#ifdef __ANDROID__
-    if (ocl::Device::getDefault().isNVidia())
-        return false;
-#endif
-
-    int type = _src.type(), depth = CV_MAT_DEPTH(type), cn = CV_MAT_CN(type);
-    int i, j, maxk, radius;
-
-    if (depth != CV_8U || cn > 4)
-        return false;
-
-    if (sigma_color <= 0)
-        sigma_color = 1;
-    if (sigma_space <= 0)
-        sigma_space = 1;
-
-    double gauss_color_coeff = -0.5 / (sigma_color * sigma_color);
-    double gauss_space_coeff = -0.5 / (sigma_space * sigma_space);
-
-    if ( d <= 0 )
-        radius = cvRound(sigma_space * 1.5);
-    else
-        radius = d / 2;
-    radius = MAX(radius, 1);
-    d = radius * 2 + 1;
-
-    UMat src = _src.getUMat(), dst = _dst.getUMat(), temp;
-    if (src.u == dst.u)
-        return false;
-
-    copyMakeBorder(src, temp, radius, radius, radius, radius, borderType);
-    std::vector<float> _space_weight(d * d);
-    std::vector<int> _space_ofs(d * d);
-    float * const space_weight = &_space_weight[0];
-    int * const space_ofs = &_space_ofs[0];
-
-    // initialize space-related bilateral filter coefficients
-    for( i = -radius, maxk = 0; i <= radius; i++ )
-        for( j = -radius; j <= radius; j++ )
-        {
-            double r = std::sqrt((double)i * i + (double)j * j);
-            if ( r > radius )
-                continue;
-            space_weight[maxk] = (float)std::exp(r * r * gauss_space_coeff);
-            space_ofs[maxk++] = (int)(i * temp.step + j * cn);
-        }
-
-    char cvt[3][40];
-    String cnstr = cn > 1 ? format("%d", cn) : "";
-    String kernelName("bilateral");
-    size_t sizeDiv = 1;
-    if ((ocl::Device::getDefault().isIntel()) &&
-        (ocl::Device::getDefault().type() == ocl::Device::TYPE_GPU))
-    {
-            //Intel GPU
-            if (dst.cols % 4 == 0 && cn == 1) // For single channel x4 sized images.
-            {
-                kernelName = "bilateral_float4";
-                sizeDiv = 4;
-            }
-     }
-     ocl::Kernel k(kernelName.c_str(), ocl::imgproc::bilateral_oclsrc,
-            format("-D radius=%d -D maxk=%d -D cn=%d -D int_t=%s -D uint_t=uint%s -D convert_int_t=%s"
-            " -D uchar_t=%s -D float_t=%s -D convert_float_t=%s -D convert_uchar_t=%s -D gauss_color_coeff=(float)%f",
-            radius, maxk, cn, ocl::typeToStr(CV_32SC(cn)), cnstr.c_str(),
-            ocl::convertTypeStr(CV_8U, CV_32S, cn, cvt[0]),
-            ocl::typeToStr(type), ocl::typeToStr(CV_32FC(cn)),
-            ocl::convertTypeStr(CV_32S, CV_32F, cn, cvt[1]),
-            ocl::convertTypeStr(CV_32F, CV_8U, cn, cvt[2]), gauss_color_coeff));
-    if (k.empty())
-        return false;
-
-    Mat mspace_weight(1, d * d, CV_32FC1, space_weight);
-    Mat mspace_ofs(1, d * d, CV_32SC1, space_ofs);
-    UMat ucolor_weight, uspace_weight, uspace_ofs;
-
-    mspace_weight.copyTo(uspace_weight);
-    mspace_ofs.copyTo(uspace_ofs);
-
-    k.args(ocl::KernelArg::ReadOnlyNoSize(temp), ocl::KernelArg::WriteOnly(dst),
-           ocl::KernelArg::PtrReadOnly(uspace_weight),
-           ocl::KernelArg::PtrReadOnly(uspace_ofs));
-
-    size_t globalsize[2] = { (size_t)dst.cols / sizeDiv, (size_t)dst.rows };
-    return k.run(2, globalsize, NULL, false);
-}
-
-#endif
-static void
-bilateralFilter_8u( const Mat& src, Mat& dst, int d,
-    double sigma_color, double sigma_space,
-    int borderType )
-{
-    int cn = src.channels();
-    int i, j, maxk, radius;
-    Size size = src.size();
-
-    CV_Assert( (src.type() == CV_8UC1 || src.type() == CV_8UC3) && src.data != dst.data );
-
-    if( sigma_color <= 0 )
-        sigma_color = 1;
-    if( sigma_space <= 0 )
-        sigma_space = 1;
-
-    double gauss_color_coeff = -0.5/(sigma_color*sigma_color);
-    double gauss_space_coeff = -0.5/(sigma_space*sigma_space);
-
-    if( d <= 0 )
-        radius = cvRound(sigma_space*1.5);
-    else
-        radius = d/2;
-    radius = MAX(radius, 1);
-    d = radius*2 + 1;
-
-    Mat temp;
-    copyMakeBorder( src, temp, radius, radius, radius, radius, borderType );
-
-    std::vector<float> _color_weight(cn*256);
-    std::vector<float> _space_weight(d*d);
-    std::vector<int> _space_ofs(d*d);
-    float* color_weight = &_color_weight[0];
-    float* space_weight = &_space_weight[0];
-    int* space_ofs = &_space_ofs[0];
-
-    // initialize color-related bilateral filter coefficients
-
-    for( i = 0; i < 256*cn; i++ )
-        color_weight[i] = (float)std::exp(i*i*gauss_color_coeff);
-
-    // initialize space-related bilateral filter coefficients
-    for( i = -radius, maxk = 0; i <= radius; i++ )
-    {
-        j = -radius;
-
-        for( ; j <= radius; j++ )
-        {
-            double r = std::sqrt((double)i*i + (double)j*j);
-            if( r > radius )
-                continue;
-            space_weight[maxk] = (float)std::exp(r*r*gauss_space_coeff);
-            space_ofs[maxk++] = (int)(i*temp.step + j*cn);
-        }
-    }
-
-    BilateralFilter_8u_Invoker body(dst, temp, radius, maxk, space_ofs, space_weight, color_weight);
-    parallel_for_(Range(0, size.height), body, dst.total()/(double)(1<<16));
-}
-
-
-class BilateralFilter_32f_Invoker :
-    public ParallelLoopBody
-{
-public:
-
-    BilateralFilter_32f_Invoker(int _cn, int _radius, int _maxk, int *_space_ofs,
-        const Mat& _temp, Mat& _dest, float _scale_index, float *_space_weight, float *_expLUT) :
-        cn(_cn), radius(_radius), maxk(_maxk), space_ofs(_space_ofs),
-        temp(&_temp), dest(&_dest), scale_index(_scale_index), space_weight(_space_weight), expLUT(_expLUT)
-    {
-    }
-
-    virtual void operator() (const Range& range) const CV_OVERRIDE
-    {
-        int i, j, k;
-        Size size = dest->size();
-#if CV_SIMD128
-        int CV_DECL_ALIGNED(16) idxBuf[4];
-        bool haveSIMD128 = hasSIMD128();
-#endif
-
-        for( i = range.start; i < range.end; i++ )
-        {
-            const float* sptr = temp->ptr<float>(i+radius) + radius*cn;
-            float* dptr = dest->ptr<float>(i);
-
-            if( cn == 1 )
-            {
-                for( j = 0; j < size.width; j++ )
-                {
-                    float sum = 0, wsum = 0;
-                    float val0 = sptr[j];
-                    k = 0;
-#if CV_SIMD128
-                    if( haveSIMD128 )
-                    {
-                        v_float32x4 vecwsum = v_setzero_f32();
-                        v_float32x4 vecvsum = v_setzero_f32();
-                        const v_float32x4 _val0 = v_setall_f32(sptr[j]);
-                        const v_float32x4 _scale_index = v_setall_f32(scale_index);
-
-                        for (; k <= maxk - 4; k += 4)
-                        {
-                            v_float32x4 _sw = v_load(space_weight + k);
-                            v_float32x4 _val = v_float32x4(sptr[j + space_ofs[k]],
-                                sptr[j + space_ofs[k + 1]],
-                                sptr[j + space_ofs[k + 2]],
-                                sptr[j + space_ofs[k + 3]]);
-                            v_float32x4 _alpha = v_abs(_val - _val0) * _scale_index;
-
-                            v_int32x4 _idx = v_round(_alpha);
-                            v_store(idxBuf, _idx);
-                            _alpha -= v_cvt_f32(_idx);
-
-                            v_float32x4 _explut = v_float32x4(expLUT[idxBuf[0]],
-                                expLUT[idxBuf[1]],
-                                expLUT[idxBuf[2]],
-                                expLUT[idxBuf[3]]);
-                            v_float32x4 _explut1 = v_float32x4(expLUT[idxBuf[0] + 1],
-                                expLUT[idxBuf[1] + 1],
-                                expLUT[idxBuf[2] + 1],
-                                expLUT[idxBuf[3] + 1]);
-
-                            v_float32x4 _w = _sw * (_explut + (_alpha * (_explut1 - _explut)));
-                            _val *= _w;
-
-                            vecwsum += _w;
-                            vecvsum += _val;
-                        }
-                        float *bufFloat = (float*)idxBuf;
-                        v_float32x4 sum4 = v_reduce_sum4(vecwsum, vecvsum, vecwsum, vecvsum);
-                        v_store(bufFloat, sum4);
-                        sum += bufFloat[1];
-                        wsum += bufFloat[0];
-                    }
-#endif
-
-                    for( ; k < maxk; k++ )
-                    {
-                        float val = sptr[j + space_ofs[k]];
-                        float alpha = (float)(std::abs(val - val0)*scale_index);
-                        int idx = cvFloor(alpha);
-                        alpha -= idx;
-                        float w = space_weight[k]*(expLUT[idx] + alpha*(expLUT[idx+1] - expLUT[idx]));
-                        sum += val*w;
-                        wsum += w;
-                    }
-                    CV_DbgAssert(fabs(wsum) > 0);
-                    dptr[j] = (float)(sum/wsum);
-                }
-            }
-            else
-            {
-                CV_Assert( cn == 3 );
-                for( j = 0; j < size.width*3; j += 3 )
-                {
-                    float sum_b = 0, sum_g = 0, sum_r = 0, wsum = 0;
-                    float b0 = sptr[j], g0 = sptr[j+1], r0 = sptr[j+2];
-                    k = 0;
-#if CV_SIMD128
-                    if( haveSIMD128 )
-                    {
-                        v_float32x4 sumw = v_setzero_f32();
-                        v_float32x4 sumb = v_setzero_f32();
-                        v_float32x4 sumg = v_setzero_f32();
-                        v_float32x4 sumr = v_setzero_f32();
-                        const v_float32x4 _b0 = v_setall_f32(b0);
-                        const v_float32x4 _g0 = v_setall_f32(g0);
-                        const v_float32x4 _r0 = v_setall_f32(r0);
-                        const v_float32x4 _scale_index = v_setall_f32(scale_index);
-
-                        for( ; k <= maxk-4; k += 4 )
-                        {
-                            v_float32x4 _sw = v_load(space_weight + k);
-
-                            const float* const sptr_k0 = sptr + j + space_ofs[k];
-                            const float* const sptr_k1 = sptr + j + space_ofs[k+1];
-                            const float* const sptr_k2 = sptr + j + space_ofs[k+2];
-                            const float* const sptr_k3 = sptr + j + space_ofs[k+3];
-
-                            v_float32x4 _v0 = v_load(sptr_k0);
-                            v_float32x4 _v1 = v_load(sptr_k1);
-                            v_float32x4 _v2 = v_load(sptr_k2);
-                            v_float32x4 _v3 = v_load(sptr_k3);
-                            v_float32x4 _b, _g, _r, _dummy;
-
-                            v_transpose4x4(_v0, _v1, _v2, _v3, _b, _g, _r, _dummy);
-
-                            v_float32x4 _bt = v_abs(_b - _b0);
-                            v_float32x4 _gt = v_abs(_g - _g0);
-                            v_float32x4 _rt = v_abs(_r - _r0);
-                            v_float32x4 _alpha = _scale_index * (_bt + _gt + _rt);
-
-                            v_int32x4 _idx = v_round(_alpha);
-                            v_store((int*)idxBuf, _idx);
-                            _alpha -= v_cvt_f32(_idx);
-
-                            v_float32x4 _explut = v_float32x4(expLUT[idxBuf[0]],
-                                expLUT[idxBuf[1]],
-                                expLUT[idxBuf[2]],
-                                expLUT[idxBuf[3]]);
-                            v_float32x4 _explut1 = v_float32x4(expLUT[idxBuf[0] + 1],
-                                expLUT[idxBuf[1] + 1],
-                                expLUT[idxBuf[2] + 1],
-                                expLUT[idxBuf[3] + 1]);
-
-                            v_float32x4 _w = _sw * (_explut + (_alpha * (_explut1 - _explut)));
-
-                            _b *=  _w;
-                            _g *=  _w;
-                            _r *=  _w;
-                            sumw += _w;
-                            sumb += _b;
-                            sumg += _g;
-                            sumr += _r;
-                        }
-                        v_float32x4 sum4 = v_reduce_sum4(sumw, sumb, sumg, sumr);
-                        float *bufFloat = (float*)idxBuf;
-                        v_store(bufFloat, sum4);
-                        wsum += bufFloat[0];
-                        sum_b += bufFloat[1];
-                        sum_g += bufFloat[2];
-                        sum_r += bufFloat[3];
-                    }
-#endif
-
-                    for(; k < maxk; k++ )
-                    {
-                        const float* sptr_k = sptr + j + space_ofs[k];
-                        float b = sptr_k[0], g = sptr_k[1], r = sptr_k[2];
-                        float alpha = (float)((std::abs(b - b0) +
-                            std::abs(g - g0) + std::abs(r - r0))*scale_index);
-                        int idx = cvFloor(alpha);
-                        alpha -= idx;
-                        float w = space_weight[k]*(expLUT[idx] + alpha*(expLUT[idx+1] - expLUT[idx]));
-                        sum_b += b*w; sum_g += g*w; sum_r += r*w;
-                        wsum += w;
-                    }
-                    CV_DbgAssert(fabs(wsum) > 0);
-                    wsum = 1.f/wsum;
-                    b0 = sum_b*wsum;
-                    g0 = sum_g*wsum;
-                    r0 = sum_r*wsum;
-                    dptr[j] = b0; dptr[j+1] = g0; dptr[j+2] = r0;
-                }
-            }
-        }
-    }
-
-private:
-    int cn, radius, maxk, *space_ofs;
-    const Mat* temp;
-    Mat *dest;
-    float scale_index, *space_weight, *expLUT;
-};
-
-
-static void
-bilateralFilter_32f( const Mat& src, Mat& dst, int d,
-                     double sigma_color, double sigma_space,
-                     int borderType )
-{
-    int cn = src.channels();
-    int i, j, maxk, radius;
-    double minValSrc=-1, maxValSrc=1;
-    const int kExpNumBinsPerChannel = 1 << 12;
-    int kExpNumBins = 0;
-    float lastExpVal = 1.f;
-    float len, scale_index;
-    Size size = src.size();
-
-    CV_Assert( (src.type() == CV_32FC1 || src.type() == CV_32FC3) && src.data != dst.data );
-
-    if( sigma_color <= 0 )
-        sigma_color = 1;
-    if( sigma_space <= 0 )
-        sigma_space = 1;
-
-    double gauss_color_coeff = -0.5/(sigma_color*sigma_color);
-    double gauss_space_coeff = -0.5/(sigma_space*sigma_space);
-
-    if( d <= 0 )
-        radius = cvRound(sigma_space*1.5);
-    else
-        radius = d/2;
-    radius = MAX(radius, 1);
-    d = radius*2 + 1;
-    // compute the min/max range for the input image (even if multichannel)
-
-    minMaxLoc( src.reshape(1), &minValSrc, &maxValSrc );
-    if(std::abs(minValSrc - maxValSrc) < FLT_EPSILON)
-    {
-        src.copyTo(dst);
-        return;
-    }
-
-    // temporary copy of the image with borders for easy processing
-    Mat temp;
-    copyMakeBorder( src, temp, radius, radius, radius, radius, borderType );
-    const double insteadNaNValue = -5. * sigma_color;
-    patchNaNs( temp, insteadNaNValue ); // this replacement of NaNs makes the assumption that depth values are nonnegative
-                                        // TODO: make insteadNaNValue avalible in the outside function interface to control the cases breaking the assumption
-    // allocate lookup tables
-    std::vector<float> _space_weight(d*d);
-    std::vector<int> _space_ofs(d*d);
-    float* space_weight = &_space_weight[0];
-    int* space_ofs = &_space_ofs[0];
-
-    // assign a length which is slightly more than needed
-    len = (float)(maxValSrc - minValSrc) * cn;
-    kExpNumBins = kExpNumBinsPerChannel * cn;
-    std::vector<float> _expLUT(kExpNumBins+2);
-    float* expLUT = &_expLUT[0];
-
-    scale_index = kExpNumBins/len;
-
-    // initialize the exp LUT
-    for( i = 0; i < kExpNumBins+2; i++ )
-    {
-        if( lastExpVal > 0.f )
-        {
-            double val =  i / scale_index;
-            expLUT[i] = (float)std::exp(val * val * gauss_color_coeff);
-            lastExpVal = expLUT[i];
-        }
-        else
-            expLUT[i] = 0.f;
-    }
-
-    // initialize space-related bilateral filter coefficients
-    for( i = -radius, maxk = 0; i <= radius; i++ )
-        for( j = -radius; j <= radius; j++ )
-        {
-            double r = std::sqrt((double)i*i + (double)j*j);
-            if( r > radius )
-                continue;
-            space_weight[maxk] = (float)std::exp(r*r*gauss_space_coeff);
-            space_ofs[maxk++] = (int)(i*(temp.step/sizeof(float)) + j*cn);
-        }
-
-    // parallel_for usage
-
-    BilateralFilter_32f_Invoker body(cn, radius, maxk, space_ofs, temp, dst, scale_index, space_weight, expLUT);
-    parallel_for_(Range(0, size.height), body, dst.total()/(double)(1<<16));
-}
-
-#ifdef HAVE_IPP
-#define IPP_BILATERAL_PARALLEL 1
-
-#ifdef HAVE_IPP_IW
-class ipp_bilateralFilterParallel: public ParallelLoopBody
-{
-public:
-    ipp_bilateralFilterParallel(::ipp::IwiImage &_src, ::ipp::IwiImage &_dst, int _radius, Ipp32f _valSquareSigma, Ipp32f _posSquareSigma, ::ipp::IwiBorderType _borderType, bool *_ok):
-        src(_src), dst(_dst)
-    {
-        pOk = _ok;
-
-        radius          = _radius;
-        valSquareSigma  = _valSquareSigma;
-        posSquareSigma  = _posSquareSigma;
-        borderType      = _borderType;
-
-        *pOk = true;
-    }
-    ~ipp_bilateralFilterParallel() {}
-
-    virtual void operator() (const Range& range) const CV_OVERRIDE
-    {
-        if(*pOk == false)
-            return;
-
-        try
-        {
-            ::ipp::IwiTile tile = ::ipp::IwiRoi(0, range.start, dst.m_size.width, range.end - range.start);
-            CV_INSTRUMENT_FUN_IPP(::ipp::iwiFilterBilateral, src, dst, radius, valSquareSigma, posSquareSigma, ::ipp::IwDefault(), borderType, tile);
-        }
-        catch(const ::ipp::IwException &)
-        {
-            *pOk = false;
-            return;
-        }
-    }
-private:
-    ::ipp::IwiImage &src;
-    ::ipp::IwiImage &dst;
-
-    int                  radius;
-    Ipp32f               valSquareSigma;
-    Ipp32f               posSquareSigma;
-    ::ipp::IwiBorderType borderType;
-
-    bool  *pOk;
-    const ipp_bilateralFilterParallel& operator= (const ipp_bilateralFilterParallel&);
-};
-#endif
-
-static bool ipp_bilateralFilter(Mat &src, Mat &dst, int d, double sigmaColor, double sigmaSpace, int borderType)
-{
-#ifdef HAVE_IPP_IW
-    CV_INSTRUMENT_REGION_IPP();
-
-    int         radius         = IPP_MAX(((d <= 0)?cvRound(sigmaSpace*1.5):d/2), 1);
-    Ipp32f      valSquareSigma = (Ipp32f)((sigmaColor <= 0)?1:sigmaColor*sigmaColor);
-    Ipp32f      posSquareSigma = (Ipp32f)((sigmaSpace <= 0)?1:sigmaSpace*sigmaSpace);
-
-    // Acquire data and begin processing
-    try
-    {
-        ::ipp::IwiImage      iwSrc = ippiGetImage(src);
-        ::ipp::IwiImage      iwDst = ippiGetImage(dst);
-        ::ipp::IwiBorderSize borderSize(radius);
-        ::ipp::IwiBorderType ippBorder(ippiGetBorder(iwSrc, borderType, borderSize));
-        if(!ippBorder)
-            return false;
-
-        const int threads = ippiSuggestThreadsNum(iwDst, 2);
-        if(IPP_BILATERAL_PARALLEL && threads > 1) {
-            bool  ok      = true;
-            Range range(0, (int)iwDst.m_size.height);
-            ipp_bilateralFilterParallel invoker(iwSrc, iwDst, radius, valSquareSigma, posSquareSigma, ippBorder, &ok);
-            if(!ok)
-                return false;
-
-            parallel_for_(range, invoker, threads*4);
-
-            if(!ok)
-                return false;
-        } else {
-            CV_INSTRUMENT_FUN_IPP(::ipp::iwiFilterBilateral, iwSrc, iwDst, radius, valSquareSigma, posSquareSigma, ::ipp::IwDefault(), ippBorder);
-        }
-    }
-    catch (const ::ipp::IwException &)
-    {
-        return false;
-    }
-    return true;
-#else
-    CV_UNUSED(src); CV_UNUSED(dst); CV_UNUSED(d); CV_UNUSED(sigmaColor); CV_UNUSED(sigmaSpace); CV_UNUSED(borderType);
-    return false;
-#endif
-}
-#endif
-
-}
-
-void cv::bilateralFilter( InputArray _src, OutputArray _dst, int d,
-                      double sigmaColor, double sigmaSpace,
-                      int borderType )
-{
-    CV_INSTRUMENT_REGION();
-
-    _dst.create( _src.size(), _src.type() );
-
-    CV_OCL_RUN(_src.dims() <= 2 && _dst.isUMat(),
-               ocl_bilateralFilter_8u(_src, _dst, d, sigmaColor, sigmaSpace, borderType))
-
-    Mat src = _src.getMat(), dst = _dst.getMat();
-
-    CV_IPP_RUN_FAST(ipp_bilateralFilter(src, dst, d, sigmaColor, sigmaSpace, borderType));
-
-    if( src.depth() == CV_8U )
-        bilateralFilter_8u( src, dst, d, sigmaColor, sigmaSpace, borderType );
-    else if( src.depth() == CV_32F )
-        bilateralFilter_32f( src, dst, d, sigmaColor, sigmaSpace, borderType );
-    else
-        CV_Error( CV_StsUnsupportedFormat,
-        "Bilateral filtering is only implemented for 8u and 32f images" );
-}
-
 //////////////////////////////////////////////////////////////////////////////////////////
 
 CV_IMPL void

modules/python/CMakeLists.txt

@@ -3,11 +3,10 @@
 # ----------------------------------------------------------------------------
 if(DEFINED OPENCV_INITIAL_PASS)  # OpenCV build
 
-add_subdirectory(bindings)
-
 if(ANDROID OR APPLE_FRAMEWORK OR WINRT)
-  set(__disable_python2 ON)
-  set(__disable_python3 ON)
+  ocv_module_disable_(python2)
+  ocv_module_disable_(python3)
+  return()
 elseif(BUILD_opencv_world OR (WIN32 AND CMAKE_BUILD_TYPE STREQUAL "Debug"))
   if(NOT DEFINED BUILD_opencv_python2)
     set(__disable_python2 ON)
@@ -17,6 +16,12 @@ elseif(BUILD_opencv_world OR (WIN32 AND CMAKE_BUILD_TYPE STREQUAL "Debug"))
   endif()
 endif()
 
+add_subdirectory(bindings)
+
+if(NOT OPENCV_SKIP_PYTHON_LOADER)
+  include("./python_loader.cmake")
+endif()
+
 if(__disable_python2)
   ocv_module_disable_(python2)
 endif()

modules/python/bindings/CMakeLists.txt

@@ -42,6 +42,7 @@ ocv_list_filterout(opencv_hdrs "modules/.*\\\\.inl\\\\.h*")
 ocv_list_filterout(opencv_hdrs "modules/.*_inl\\\\.h*")
 ocv_list_filterout(opencv_hdrs "modules/.*\\\\.details\\\\.h*")
 ocv_list_filterout(opencv_hdrs "modules/.*\\\\.private\\\\.h*")
+ocv_list_filterout(opencv_hdrs "modules/.*/private\\\\.h*")
 ocv_list_filterout(opencv_hdrs "modules/.*/detection_based_tracker\\\\.hpp") # Conditional compilation
 if(NOT HAVE_CUDA)
   ocv_list_filterout(opencv_hdrs "modules/cuda.*")
@@ -104,6 +105,7 @@ ocv_cmake_script_append_var(PYTHON_CONFIG_SCRIPT
 
     CMAKE_MODULE_LINKER_FLAGS
     CMAKE_INSTALL_PREFIX
+    OPENCV_PYTHON_INSTALL_PATH
 
     OpenCV_SOURCE_DIR
 

modules/python/common.cmake

@@ -56,8 +56,10 @@ else()
   endif()
 endif()
 
+ocv_update(OPENCV_PYTHON_EXTENSION_BUILD_PATH "${LIBRARY_OUTPUT_PATH}/${MODULE_INSTALL_SUBDIR}")
+
 set_target_properties(${the_module} PROPERTIES
-                      LIBRARY_OUTPUT_DIRECTORY  "${LIBRARY_OUTPUT_PATH}/${MODULE_INSTALL_SUBDIR}"
+                      LIBRARY_OUTPUT_DIRECTORY  "${OPENCV_PYTHON_EXTENSION_BUILD_PATH}"
                       ARCHIVE_OUTPUT_NAME ${the_module}  # prevent name conflict for python2/3 outputs
                       DEFINE_SYMBOL CVAPI_EXPORTS
                       PREFIX ""
@@ -110,33 +112,67 @@ else()
   set(PYTHON_INSTALL_ARCHIVE ARCHIVE DESTINATION ${${PYTHON}_PACKAGES_PATH} COMPONENT python)
 endif()
 
-if(DEFINED OPENCV_${PYTHON}_INSTALL_PATH)
-  set(__dst "${OPENCV_${PYTHON}_INSTALL_PATH}")
-elseif(NOT INSTALL_CREATE_DISTRIB AND DEFINED ${PYTHON}_PACKAGES_PATH)
-  set(__dst "${${PYTHON}_PACKAGES_PATH}")
+ocv_assert(${PYTHON}_VERSION_MAJOR)
+ocv_assert(${PYTHON}_VERSION_MINOR)
+
+set(__python_loader_subdir "")
+if(NOT OPENCV_SKIP_PYTHON_LOADER)
+  set(__python_loader_subdir "cv2/")
 endif()
-if(NOT __dst)
-  if(DEFINED ${PYTHON}_VERSION_MAJOR)
-    set(__ver "${${PYTHON}_VERSION_MAJOR}.${${PYTHON}_VERSION_MINOR}")
-  elseif(DEFINED ${PYTHON}_VERSION_STRING)
-    set(__ver "${${PYTHON}_VERSION_STRING}")
-  else()
-    set(__ver "unknown")
-  endif()
-  if(INSTALL_CREATE_DISTRIB)
-    set(__dst "python/${__ver}/${OpenCV_ARCH}")
-  else()
-    set(__dst "python/${__ver}")
-  endif()
+
+if(NOT " ${PYTHON}" STREQUAL " PYTHON" AND DEFINED OPENCV_${PYTHON}_INSTALL_PATH)
+  set(__python_binary_install_path "${OPENCV_${PYTHON}_INSTALL_PATH}")
+else()
+  ocv_assert(DEFINED OPENCV_PYTHON_INSTALL_PATH)
+  set(__python_binary_install_path "${OPENCV_PYTHON_INSTALL_PATH}/${__python_loader_subdir}python-${${PYTHON}_VERSION_MAJOR}.${${PYTHON}_VERSION_MINOR}")
 endif()
 
 install(TARGETS ${the_module}
         ${PYTHON_INSTALL_CONFIGURATIONS}
-        RUNTIME DESTINATION "${__dst}" COMPONENT python
-        LIBRARY DESTINATION "${__dst}" COMPONENT python
+        RUNTIME DESTINATION "${__python_binary_install_path}" COMPONENT python
+        LIBRARY DESTINATION "${__python_binary_install_path}" COMPONENT python
         ${PYTHON_INSTALL_ARCHIVE}
         )
 
+if(NOT OPENCV_SKIP_PYTHON_LOADER)
+  ocv_assert(DEFINED OPENCV_PYTHON_INSTALL_PATH)
+  if(OpenCV_FOUND)
+    set(__loader_path "${OpenCV_BINARY_DIR}/python_loader")
+  else()
+    set(__loader_path "${CMAKE_BINARY_DIR}/python_loader")
+  endif()
+
+  set(__python_loader_install_tmp_path "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/install/python_loader/")
+  if(IS_ABSOLUTE "${OPENCV_PYTHON_INSTALL_PATH}")
+    set(OpenCV_PYTHON_INSTALL_PATH_RELATIVE_CONFIGCMAKE "${CMAKE_INSTALL_PREFIX}/")
+    set(CMAKE_PYTHON_EXTENSION_INSTALL_PATH_BASE "'${CMAKE_INSTALL_PREFIX}'")
+  else()
+    file(RELATIVE_PATH OpenCV_PYTHON_INSTALL_PATH_RELATIVE_CONFIGCMAKE "${CMAKE_INSTALL_PREFIX}/${OPENCV_PYTHON_INSTALL_PATH}/cv2" ${CMAKE_INSTALL_PREFIX})
+    set(CMAKE_PYTHON_EXTENSION_INSTALL_PATH_BASE "os.path.join(LOADER_DIR, '${OpenCV_PYTHON_INSTALL_PATH_RELATIVE_CONFIGCMAKE}')")
+  endif()
+
+  if(DEFINED ${PYTHON}_VERSION_MINOR)
+    set(__target_config "config-${${PYTHON}_VERSION_MAJOR}.${${PYTHON}_VERSION_MINOR}.py")
+  else()
+    set(__target_config "config-${${PYTHON}_VERSION_MAJOR}.py")
+  endif()
+
+  if(CMAKE_GENERATOR MATCHES "Visual Studio")
+    set(CMAKE_PYTHON_EXTENSION_PATH "'${OPENCV_PYTHON_EXTENSION_BUILD_PATH}/Release'")  # TODO: CMAKE_BUILD_TYPE is not defined
+  else()
+    set(CMAKE_PYTHON_EXTENSION_PATH "'${OPENCV_PYTHON_EXTENSION_BUILD_PATH}'")
+  endif()
+  configure_file("${PYTHON_SOURCE_DIR}/package/template/config-x.y.py.in" "${__loader_path}/cv2/${__target_config}" @ONLY)
+
+  if(IS_ABSOLUTE __python_binary_install_path)
+    set(CMAKE_PYTHON_EXTENSION_PATH "'${__python_binary_install_path}'")
+  else()
+    set(CMAKE_PYTHON_EXTENSION_PATH "os.path.join(${CMAKE_PYTHON_EXTENSION_INSTALL_PATH_BASE}, '${__python_binary_install_path}')")
+  endif()
+  configure_file("${PYTHON_SOURCE_DIR}/package/template/config-x.y.py.in" "${__python_loader_install_tmp_path}/cv2/${__target_config}" @ONLY)
+  install(FILES "${__python_loader_install_tmp_path}/cv2/${__target_config}" DESTINATION "${OPENCV_PYTHON_INSTALL_PATH}/cv2/" COMPONENT python)
+endif()  # NOT OPENCV_SKIP_PYTHON_LOADER
+
 unset(PYTHON_SRC_DIR)
 unset(PYTHON_CVPY_PROCESS)
 unset(CVPY_SUFFIX)

modules/python/package/.gitignore

@@ -0,0 +1,4 @@
+__pycache__
+*.pyc
+*.egg-info
+*dist

modules/python/package/cv2/__init__.py

@@ -0,0 +1,89 @@
+'''
+OpenCV Python binary extension loader
+'''
+import os
+import sys
+
+try:
+    import numpy
+    import numpy.core.multiarray
+except ImportError:
+    print('OpenCV bindings requires "numpy" package.')
+    print('Install it via command:')
+    print('    pip install numpy')
+    raise
+
+# TODO
+# is_x64 = sys.maxsize > 2**32
+
+def bootstrap():
+    import sys
+    if hasattr(sys, 'OpenCV_LOADER'):
+        print(sys.path)
+        raise ImportError('ERROR: recursion is detected during loading of "cv2" binary extensions. Check OpenCV installation.')
+    sys.OpenCV_LOADER = True
+
+    DEBUG = False
+    if hasattr(sys, 'OpenCV_LOADER_DEBUG'):
+        DEBUG = True
+
+    import platform
+    if DEBUG: print('OpenCV loader: os.name="{}"  platform.system()="{}"'.format(os.name, str(platform.system())))
+
+    LOADER_DIR=os.path.dirname(os.path.abspath(__file__))
+
+    PYTHON_EXTENSIONS_PATHS = []
+    BINARIES_PATHS = []
+
+    g_vars = globals()
+    l_vars = locals()
+
+    if sys.version_info[:2] < (3, 0):
+        from cv2.load_config_py2 import exec_file_wrapper
+    else:
+        from . load_config_py3 import exec_file_wrapper
+
+    def load_first_config(fnames, required=True):
+        for fname in fnames:
+            fpath = os.path.join(LOADER_DIR, fname)
+            if not os.path.exists(fpath):
+                if DEBUG: print('OpenCV loader: config not found, skip: {}'.format(fpath))
+                continue
+            if DEBUG: print('OpenCV loader: loading config: {}'.format(fpath))
+            exec_file_wrapper(fpath, g_vars, l_vars)
+            return True
+        if required:
+            raise ImportError('OpenCV loader: missing configuration file: {}. Check OpenCV installation.'.format(fnames))
+
+    load_first_config(['config.py'], True)
+    load_first_config([
+        'config-{}.{}.py'.format(sys.version_info[0], sys.version_info[1]),
+        'config-{}.py'.format(sys.version_info[0])
+    ], True)
+
+    if DEBUG: print('OpenCV loader: PYTHON_EXTENSIONS_PATHS={}'.format(str(l_vars['PYTHON_EXTENSIONS_PATHS'])))
+    if DEBUG: print('OpenCV loader: BINARIES_PATHS={}'.format(str(l_vars['BINARIES_PATHS'])))
+
+    for p in reversed(l_vars['PYTHON_EXTENSIONS_PATHS']):
+        sys.path.insert(0, p)
+
+    if os.name == 'nt':
+        os.environ['PATH'] = ';'.join(l_vars['BINARIES_PATHS']) + ';' + os.environ.get('PATH', '')
+        if DEBUG: print('OpenCV loader: PATH={}'.format(str(os.environ['PATH'])))
+    else:
+        # amending of LD_LIBRARY_PATH works for sub-processes only
+        os.environ['LD_LIBRARY_PATH'] = ':'.join(l_vars['BINARIES_PATHS']) + ':' + os.environ.get('LD_LIBRARY_PATH', '')
+
+    if DEBUG: print('OpenCV loader: replacing cv2 module')
+    del sys.modules['cv2']
+    import cv2
+
+    try:
+        import sys
+        del sys.OpenCV_LOADER
+    except:
+        pass
+
+    if DEBUG: print('OpenCV loader: DONE')
+
+bootstrap()

modules/python/package/cv2/load_config_py2.py

@@ -0,0 +1,6 @@
+# flake8: noqa
+import sys
+
+if sys.version_info[:2] < (3, 0):
+    def exec_file_wrapper(fpath, g_vars, l_vars):
+        execfile(fpath, g_vars, l_vars)

modules/python/package/cv2/load_config_py3.py

@@ -0,0 +1,9 @@
+# flake8: noqa
+import os
+import sys
+
+if sys.version_info[:2] >= (3, 0):
+    def exec_file_wrapper(fpath, g_vars, l_vars):
+        with open(fpath) as f:
+            code = compile(f.read(), os.path.basename(fpath), 'exec')
+            exec(code, g_vars, l_vars)

modules/python/package/setup.py

@@ -0,0 +1,57 @@
+import os
+import sys
+import platform
+import setuptools
+
+SCRIPT_DIR=os.path.dirname(os.path.abspath(__file__))
+
+def main():
+    os.chdir(SCRIPT_DIR)
+
+    package_name = 'opencv'
+    package_version = os.environ.get('OPENCV_VERSION', '4.0.0')  # TODO
+
+    long_description = 'Open Source Computer Vision Library Python bindings'  # TODO
+
+    setuptools.setup(
+        name=package_name,
+        version=package_version,
+        url='https://github.com/opencv/opencv',
+        license='BSD',
+        description='OpenCV python bindings',
+        long_description=long_description,
+        long_description_content_type="text/markdown",
+        packages=setuptools.find_packages(),
+        maintainer="OpenCV Team",
+        install_requires="numpy",
+        classifiers=[
+          'Development Status :: 5 - Production/Stable',
+          'Environment :: Console',
+          'Intended Audience :: Developers',
+          'Intended Audience :: Education',
+          'Intended Audience :: Information Technology',
+          'Intended Audience :: Science/Research',
+          'License :: BSD License',
+          'Operating System :: MacOS',
+          'Operating System :: Microsoft :: Windows',
+          'Operating System :: POSIX',
+          'Operating System :: Unix',
+          'Programming Language :: Python',
+          'Programming Language :: Python :: 2',
+          'Programming Language :: Python :: 2.7',
+          'Programming Language :: Python :: 3',
+          'Programming Language :: Python :: 3.4',
+          'Programming Language :: Python :: 3.5',
+          'Programming Language :: Python :: 3.6',
+          'Programming Language :: Python :: 3.7',
+          'Programming Language :: C++',
+          'Programming Language :: Python :: Implementation :: CPython',
+          'Topic :: Scientific/Engineering',
+          'Topic :: Scientific/Engineering :: Image Recognition',
+          'Topic :: Software Development',
+          'Topic :: Software Development :: Libraries',
+        ],
+    )
+
+if __name__ == '__main__':
+    main()

modules/python/package/template/config-x.y.py.in

@@ -0,0 +1,3 @@
+PYTHON_EXTENSIONS_PATHS = [
+    @CMAKE_PYTHON_EXTENSION_PATH@
+] + PYTHON_EXTENSIONS_PATHS

modules/python/package/template/config.py.in

@@ -0,0 +1,3 @@
+BINARIES_PATHS = [
+    @CMAKE_PYTHON_BINARIES_PATH@
+] + BINARIES_PATHS

modules/python/python_loader.cmake

@@ -0,0 +1,54 @@
+ocv_assert(NOT OPENCV_SKIP_PYTHON_LOADER)
+
+set(PYTHON_SOURCE_DIR "${CMAKE_CURRENT_LIST_DIR}")
+
+ocv_assert(DEFINED OPENCV_PYTHON_INSTALL_PATH)
+if(OpenCV_FOUND)
+  set(__loader_path "${OpenCV_BINARY_DIR}/python_loader")
+else()
+  set(__loader_path "${CMAKE_BINARY_DIR}/python_loader")
+endif()
+
+set(__python_loader_install_tmp_path "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/install/python_loader/")
+if(IS_ABSOLUTE "${OPENCV_PYTHON_INSTALL_PATH}")
+  set(OpenCV_PYTHON_INSTALL_PATH_RELATIVE_CONFIGCMAKE "${CMAKE_INSTALL_PREFIX}/")
+  set(CMAKE_PYTHON_EXTENSION_INSTALL_PATH_BASE "'${CMAKE_INSTALL_PREFIX}'")
+else()
+  file(RELATIVE_PATH OpenCV_PYTHON_INSTALL_PATH_RELATIVE_CONFIGCMAKE "${CMAKE_INSTALL_PREFIX}/${OPENCV_PYTHON_INSTALL_PATH}/cv2" ${CMAKE_INSTALL_PREFIX})
+  set(CMAKE_PYTHON_EXTENSION_INSTALL_PATH_BASE "os.path.join(LOADER_DIR, '${OpenCV_PYTHON_INSTALL_PATH_RELATIVE_CONFIGCMAKE}')")
+endif()
+
+set(PYTHON_LOADER_FILES
+    "setup.py" "cv2/__init__.py"
+    "cv2/load_config_py2.py" "cv2/load_config_py3.py"
+)
+foreach(fname ${PYTHON_LOADER_FILES})
+  get_filename_component(__dir "${fname}" DIRECTORY)
+  file(COPY "${PYTHON_SOURCE_DIR}/package/${fname}" DESTINATION "${__loader_path}/${__dir}")
+  install(FILES "${PYTHON_SOURCE_DIR}/package/${fname}" DESTINATION "${OPENCV_PYTHON_INSTALL_PATH}/${__dir}" COMPONENT python)
+endforeach()
+
+if(NOT OpenCV_FOUND)  # Ignore "standalone" builds of Python bindings
+  if(WIN32)
+    if(CMAKE_GENERATOR MATCHES "Visual Studio")
+      list(APPEND CMAKE_PYTHON_BINARIES_PATH "'${EXECUTABLE_OUTPUT_PATH}/Release'")  # TODO: CMAKE_BUILD_TYPE is not defined
+    else()
+      list(APPEND CMAKE_PYTHON_BINARIES_PATH "'${EXECUTABLE_OUTPUT_PATH}'")
+    endif()
+  else()
+    list(APPEND CMAKE_PYTHON_BINARIES_PATH "'${LIBRARY_OUTPUT_PATH}'")
+  endif()
+  string(REPLACE ";" ",\n    " CMAKE_PYTHON_BINARIES_PATH "${CMAKE_PYTHON_BINARIES_PATH}")
+  configure_file("${PYTHON_SOURCE_DIR}/package/template/config.py.in" "${__loader_path}/cv2/config.py" @ONLY)
+
+  if(WIN32)
+    list(APPEND CMAKE_PYTHON_BINARIES_INSTALL_PATH "os.path.join(${CMAKE_PYTHON_EXTENSION_INSTALL_PATH_BASE}, '${OPENCV_BIN_INSTALL_PATH}')")
+  else()
+    list(APPEND CMAKE_PYTHON_BINARIES_INSTALL_PATH "os.path.join(${CMAKE_PYTHON_EXTENSION_INSTALL_PATH_BASE}, '${OPENCV_LIB_INSTALL_PATH}')")
+  endif()
+  string(REPLACE ";" ",\n    " CMAKE_PYTHON_BINARIES_PATH "${CMAKE_PYTHON_BINARIES_INSTALL_PATH}")
+  configure_file("${PYTHON_SOURCE_DIR}/package/template/config.py.in" "${__python_loader_install_tmp_path}/cv2/config.py" @ONLY)
+  install(FILES "${__python_loader_install_tmp_path}/cv2/config.py" DESTINATION "${OPENCV_PYTHON_INSTALL_PATH}/cv2/" COMPONENT python)
+
+  message(STATUS "OpenCV Python: during development append to PYTHONPATH: ${__loader_path}")
+endif()

modules/python/src2/hdr_parser.py

@@ -432,7 +432,7 @@ class CppHeaderParser(object):
         # it means class methods, not instance methods
         decl_str = self.batch_replace(decl_str, [("static inline", ""), ("inline", ""),\
             ("CV_EXPORTS_W", ""), ("CV_EXPORTS", ""), ("CV_CDECL", ""), ("CV_WRAP ", " "), ("CV_INLINE", ""),
-            ("CV_DEPRECATED", "")]).strip()
+            ("CV_DEPRECATED", ""), ("CV_DEPRECATED_EXTERNAL", "")]).strip()
 
 
         if decl_str.strip().startswith('virtual'):

modules/python/test/test_misc.py

@@ -84,6 +84,23 @@ class Arguments(NewOpenCVTests):
         self.assertEqual(res4, "InputArrayOfArrays: empty()=false kind=0x00050000 flags=0x01050000 total(-1)=3 dims(-1)=1 size(-1)=3x1 type(0)=CV_32FC2 dims(0)=2 size(0)=3x1 type(0)=CV_32FC2")
 
 
+class SamplesFindFile(NewOpenCVTests):
+
+    def test_ExistedFile(self):
+        res = cv.samples.findFile('lena.jpg', False)
+        self.assertNotEqual(res, '')
+
+    def test_MissingFile(self):
+        res = cv.samples.findFile('non_existed.file', False)
+        self.assertEqual(res, '')
+
+    def test_MissingFileException(self):
+        try:
+            res = cv.samples.findFile('non_existed.file', True)
+            self.assertEqual("Dead code", 0)
+        except cv.error as _e:
+            pass
+
 
 if __name__ == '__main__':
     NewOpenCVTests.bootstrap()

platforms/android/build_sdk.py

@@ -210,7 +210,7 @@ class Builder:
         # Add extra data
         apkxmldest = check_dir(os.path.join(apkdest, "res", "xml"), create=True)
         apklibdest = check_dir(os.path.join(apkdest, "libs", abi.name), create=True)
-        for ver, d in self.extra_packs + [("3.4.3", os.path.join(self.libdest, "lib"))]:
+        for ver, d in self.extra_packs + [("3.4.4", os.path.join(self.libdest, "lib"))]:
             r = ET.Element("library", attrib={"version": ver})
             log.info("Adding libraries from %s", d)
 

platforms/android/service/engine/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.opencv.engine"
-    android:versionCode="343@ANDROID_PLATFORM_ID@"
-    android:versionName="3.43">
+    android:versionCode="344@ANDROID_PLATFORM_ID@"
+    android:versionName="3.44">
 
     <uses-sdk android:minSdkVersion="@ANDROID_NATIVE_API_LEVEL@" android:targetSdkVersion="22"/>
     <uses-feature android:name="android.hardware.touchscreen" android:required="false"/>

platforms/android/service/engine/src/org/opencv/engine/OpenCVEngineService.java

@@ -137,7 +137,7 @@ public class OpenCVEngineService extends Service {
 
             @Override
             public int getEngineVersion() throws RemoteException {
-                int version = 3430;
+                int version = 3440;
                 try {
                     version = getPackageManager().getPackageInfo(getPackageName(), 0).versionCode;
                 } catch (NameNotFoundException e) {

platforms/android/service/readme.txt

@@ -12,7 +12,7 @@ manually using adb tool:
 
     adb install <path-to-OpenCV-sdk>/apk/OpenCV_<version>_Manager_<app_version>_<platform>.apk
 
-Example: OpenCV_3.4.3-dev_Manager_3.43_armeabi-v7a.apk
+Example: OpenCV_3.4.4-dev_Manager_3.44_armeabi-v7a.apk
 
 Use the list of platforms below to determine proper OpenCV Manager package for your device:
 

platforms/maven/opencv-it/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.opencv</groupId>
         <artifactId>opencv-parent</artifactId>
-        <version>3.4.3</version>
+        <version>4.0.0</version>
     </parent>
     <groupId>org.opencv</groupId>
     <artifactId>opencv-it</artifactId>

platforms/maven/opencv/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.opencv</groupId>
         <artifactId>opencv-parent</artifactId>
-        <version>3.4.3</version>
+        <version>4.0.0</version>
     </parent>
     <groupId>org.opencv</groupId>
     <artifactId>opencv</artifactId>

platforms/maven/pom.xml

@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.opencv</groupId>
     <artifactId>opencv-parent</artifactId>
-    <version>3.4.3</version>
+    <version>4.0.0</version>
     <packaging>pom</packaging>
     <name>OpenCV Parent POM</name>
     <licenses>

platforms/scripts/valgrind.supp

@@ -134,6 +134,13 @@
    fun:_ZNK2cv7TLSDataINS_11CoreTLSDataEE18createDataInstanceEv
 }
 
+{
+   OpenCV-UMatDataAutoLockerTLS
+   Memcheck:Leak
+   ...
+   fun:_ZN2cvL21getUMatDataAutoLockerEv
+}
+
 {
    OpenCV-haveOpenCL
    Memcheck:Leak

samples/_winpack_build_sample.cmd

@@ -7,7 +7,7 @@
 :: - MSVS 2015/2017
 :: (tools are searched on default paths or environment should be pre-configured)
 @echo off
-setlocal ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION
+setlocal
 
 set SCRIPTDIR=%~dp0
 if NOT exist "%SCRIPTDIR%\..\..\build" (
@@ -28,20 +28,20 @@ if NOT "%~x1" == ".cpp" (
   goto die
 )
 set SRC_FILENAME=%~dpnx1
-echo SRC_FILENAME=!SRC_FILENAME!
-call :dirname "!SRC_FILENAME!" SRC_DIR
-echo SRC_DIR=!SRC_DIR!
+echo SRC_FILENAME=%SRC_FILENAME%
+call :dirname "%SRC_FILENAME%" SRC_DIR
+echo SRC_DIR=%SRC_DIR%
 set "SRC_NAME=%~n1"
-echo SRC_NAME=!SRC_NAME!
+echo SRC_NAME=%SRC_NAME%
 echo ================================================================================
 
 :: Path to FFMPEG binary files
-set "PATH=!PATH!;!SCRIPTDIR!\..\..\build\bin\"
+set "PATH=%PATH%;%SCRIPTDIR%\..\..\build\bin\"
 
 :: Detect compiler
 cl /? >NUL 2>NUL <NUL
-if !ERRORLEVEL! NEQ 0 (
-  PUSHD !CD!
+if %ERRORLEVEL% NEQ 0 (
+  PUSHD %CD%
   if exist "C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Auxiliary\Build\vcvars64.bat" (
     CALL "C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Auxiliary\Build\vcvars64.bat"
     goto check_msvc
@@ -61,7 +61,7 @@ if !ERRORLEVEL! NEQ 0 (
 :check_msvc
   POPD
   cl /? >NUL 2>NUL <NUL
-  if !ERRORLEVEL! NEQ 0 (
+  if %ERRORLEVEL% NEQ 0 (
     set "MSG=Can't detect Microsoft Visial Studio C++ compiler (cl.exe). MSVS 2015/2017 are supported only from standard locations"
     goto die
   )
@@ -69,88 +69,85 @@ if !ERRORLEVEL! NEQ 0 (
 
 :: Detect CMake
 cmake --version >NUL 2>NUL
-if !ERRORLEVEL! EQU 0 (
-  set CMAKE_FOUND=1
-) else (
-  if exist "C:\Program Files\CMake\bin" (
-    set "PATH=!PATH!;C:\Program Files\CMake\bin"
-    cmake --version >NUL 2>NUL
-    if !ERRORLEVEL! EQU 0 (
-      set CMAKE_FOUND=1
-    )
-  )
-)
-if NOT DEFINED CMAKE_FOUND (
-  set "MSG=CMake is required to build OpenCV samples. Download it from here: https://cmake.org/download/ and install into 'C:\Program Files\CMake'"
-  goto die
-) else (
-  call :execute cmake --version
-  echo CMake is detected
-)
+if %ERRORLEVEL% EQU 0 GOTO :CMAKE_FOUND
+
+if NOT exist "C:\Program Files\CMake\bin" GOTO CMAKE_NOT_FOUND
+set "PATH=%PATH%;C:\Program Files\CMake\bin"
+cmake --version >NUL 2>NUL
+if %ERRORLEVEL% EQU 0 GOTO :CMAKE_FOUND
+
+:CMAKE_NOT_FOUND
+set "MSG=CMake is required to build OpenCV samples. Download it from here: https://cmake.org/download/ and install into 'C:\Program Files\CMake'"
+goto die
+
+:CMAKE_FOUND
+set CMAKE_FOUND=1
+call :execute cmake --version
+echo CMake is detected
 
 :: Detect available MSVS version
 if NOT DEFINED VisualStudioVersion (
   set "MSG=Can't determine MSVS version. 'VisualStudioVersion' is not defined"
   goto die
 )
-if "!VisualStudioVersion!" == "14.0" (
+if "%VisualStudioVersion%" == "14.0" (
   set CMAKE_GENERATOR="Visual Studio 14 Win64"
-  set "PATH=!PATH!;!SCRIPTDIR!\..\..\build\x64\vc14\bin\"
+  set "PATH=%PATH%;%SCRIPTDIR%\..\..\build\x64\vc14\bin\"
 ) else (
-  if "!VisualStudioVersion!" == "15.0" (
+  if "%VisualStudioVersion%" == "15.0" (
     set CMAKE_GENERATOR="Visual Studio 15 Win64"
-    set "PATH=!PATH!;!SCRIPTDIR!\..\..\build\x64\vc15\bin\"
+    set "PATH=%PATH%;%SCRIPTDIR%\..\..\build\x64\vc15\bin\"
   ) else (
-    set "MSG=Unsupported MSVS version. VisualStudioVersion=!VisualStudioVersion!"
+    set "MSG=Unsupported MSVS version. VisualStudioVersion=%VisualStudioVersion%"
     goto die
   )
 )
 
-set "BUILD_DIR=!SRC_DIR!\build_!SRC_NAME!"
+set "BUILD_DIR=%SRC_DIR%\build_%SRC_NAME%"
 call :set_title Create build directory
-if NOT exist "!BUILD_DIR!" ( call :execute md "!BUILD_DIR!" )
-PUSHD "!BUILD_DIR!"
-if NOT exist "!BUILD_DIR!/sample" ( call :execute md "!BUILD_DIR!/sample" )
-call :execute copy /Y "!SCRIPTDIR!/CMakeLists.example.in" "!BUILD_DIR!/sample/CMakeLists.txt"
+if NOT exist "%BUILD_DIR%" ( call :execute md "%BUILD_DIR%" )
+PUSHD "%BUILD_DIR%"
+if NOT exist "%BUILD_DIR%/sample" ( call :execute md "%BUILD_DIR%/sample" )
+call :execute copy /Y "%SCRIPTDIR%/CMakeLists.example.in" "%BUILD_DIR%/sample/CMakeLists.txt"
 
 call :set_title Configuring via CMake
-call :execute cmake -G!CMAKE_GENERATOR! "!BUILD_DIR!\sample" -DEXAMPLE_NAME=!SRC_NAME! "-DEXAMPLE_FILE=!SRC_FILENAME!" "-DOpenCV_DIR=!SCRIPTDIR!\..\..\build"
-if !ERRORLEVEL! NEQ 0 (
-  set "MSG=CMake configuration step failed: !BUILD_DIR!"
+call :execute cmake -G%CMAKE_GENERATOR% "%BUILD_DIR%\sample" -DEXAMPLE_NAME=%SRC_NAME% "-DEXAMPLE_FILE=%SRC_FILENAME%" "-DOpenCV_DIR=%SCRIPTDIR%\..\..\build"
+if %ERRORLEVEL% NEQ 0 (
+  set "MSG=CMake configuration step failed: %BUILD_DIR%"
   goto die
 )
 
 call :set_title Build sample project via CMake
 call :execute cmake --build . --config Release
-if !ERRORLEVEL! NEQ 0 (
-  set "MSG=Build step failed: !BUILD_DIR!"
+if %ERRORLEVEL% NEQ 0 (
+  set "MSG=Build step failed: %BUILD_DIR%"
   goto die
 )
 
-call :set_title Launch !SRC_NAME!
-if NOT exist "!BUILD_DIR!\Release\!SRC_NAME!.exe" (
-  echo. "ERROR: Can't find executable file (build seems broken): !SRC_NAME!.exe"
+call :set_title Launch %SRC_NAME%
+if NOT exist "%BUILD_DIR%\Release\%SRC_NAME%.exe" (
+  echo. "ERROR: Can't find executable file (build seems broken): %SRC_NAME%.exe"
 ) else (
-  cd "!BUILD_DIR!\Release"
-  call :execute "!SRC_NAME!.exe" --help
+  cd "%BUILD_DIR%\Release"
+  call :execute "%SRC_NAME%.exe" --help
   echo ================================================================================
-  echo **  Type '!SRC_NAME!.exe' to run sample application
-  echo **  Type '!SRC_NAME!.exe --help' to get list of available options (if available)
-  echo **  Type 'start ..\!SRC_NAME!.sln' to launch MSVS IDE
+  echo **  Type '%SRC_NAME%.exe' to run sample application
+  echo **  Type '%SRC_NAME%.exe --help' to get list of available options (if available)
+  echo **  Type 'start ..\%SRC_NAME%.sln' to launch MSVS IDE
   echo **  Type 'cmake --build .. --config Release' to rebuild sample
   echo **  Type 'exit' to exit from interactive shell and open the build directory
   echo ================================================================================
 )
 
-call :set_title Hands-on: !SRC_NAME!
-cmd /k echo Current directory: !CD!
+call :set_title Hands-on: %SRC_NAME%
+cmd /k echo Current directory: %CD%
 
-call :set_title Done: !SRC_NAME!
+call :set_title Done: %SRC_NAME%
 echo Opening build directory with project files...
-explorer "!BUILD_DIR!"
+explorer "%BUILD_DIR%"
 
 POPD
-echo Done!
+echo Done%
 
 pause
 exit /B 0
@@ -166,7 +163,7 @@ exit /B 0
 
 :execute
   echo =================================================================================
-  setlocal enableextensions disabledelayedexpansion
+  setlocal
   echo %*
   call %*
   endlocal

samples/_winpack_run_python_sample.cmd

@@ -0,0 +1,124 @@
+@ECHO OFF
+SETLOCAL
+
+SET SCRIPT_DIR=%~dp0
+IF NOT EXIST "%SCRIPT_DIR%\..\..\build\setup_vars_opencv4.cmd" (
+  ECHO ERROR: OpenCV Winpack installation is required
+  pause
+  exit
+)
+
+:: Detect Python binary
+python -V 2>nul
+IF %ERRORLEVEL% EQU 0 (
+  SET PYTHON=python
+  GOTO :PYTHON_FOUND
+)
+
+CALL :QUERY_PYTHON 3.7
+IF %ERRORLEVEL% EQU 0 GOTO :PYTHON_FOUND
+CALL :QUERY_PYTHON 3.6
+IF %ERRORLEVEL% EQU 0 GOTO :PYTHON_FOUND
+CALL :QUERY_PYTHON 3.5
+IF %ERRORLEVEL% EQU 0 GOTO :PYTHON_FOUND
+CALL :QUERY_PYTHON 3.4
+IF %ERRORLEVEL% EQU 0 GOTO :PYTHON_FOUND
+CALL :QUERY_PYTHON 2.7
+IF %ERRORLEVEL% EQU 0 GOTO :PYTHON_FOUND
+GOTO :PYTHON_NOT_FOUND
+
+:QUERY_PYTHON
+SETLOCAL
+SET PY_VERSION=%1
+SET PYTHON_DIR=
+CALL :regquery "HKCU\SOFTWARE\Python\PythonCore\%PY_VERSION%\InstallPath" PYTHON_DIR
+IF EXIST "%PYTHON_DIR%\python.exe" (
+  SET "PYTHON=%PYTHON_DIR%\python.exe"
+  GOTO :QUERY_PYTHON_FOUND
+)
+CALL :regquery "HKLM\SOFTWARE\Python\PythonCore\%PY_VERSION%\InstallPath" PYTHON_DIR
+IF EXIST "%PYTHON_DIR%\python.exe" (
+  SET "PYTHON=%PYTHON_DIR%\python.exe"
+  GOTO :QUERY_PYTHON_FOUND
+)
+
+::echo Python %PY_VERSION% is not detected
+ENDLOCAL
+EXIT /B 1
+
+:QUERY_PYTHON_FOUND
+ECHO Found Python %PY_VERSION% from Windows Registry: %PYTHON%
+ENDLOCAL & SET PYTHON=%PYTHON%
+EXIT /B 0
+
+IF exist C:\Python27-x64\python.exe (
+  SET PYTHON=C:\Python27-x64\python.exe
+  GOTO :PYTHON_FOUND
+)
+IF exist C:\Python27\python.exe (
+  SET PYTHON=C:\Python27\python.exe
+  GOTO :PYTHON_FOUND
+)
+
+:PYTHON_NOT_FOUND
+ECHO ERROR: Python not found
+IF NOT DEFINED OPENCV_BATCH_MODE ( pause )
+EXIT /B
+
+:PYTHON_FOUND
+ECHO Using Python: %PYTHON%
+
+:: Don't generate unnecessary .pyc cache files
+SET PYTHONDONTWRITEBYTECODE=1
+
+IF [%1]==[] goto rundemo
+
+set SRC_FILENAME=%~dpnx1
+echo SRC_FILENAME=%SRC_FILENAME%
+call :dirname "%SRC_FILENAME%" SRC_DIR
+call :dirname "%PYTHON%" PYTHON_DIR
+PUSHD %SRC_DIR%
+CALL "%SCRIPT_DIR%\..\..\build\setup_vars_opencv4.cmd"
+ECHO Run: %*
+%PYTHON% %*
+SET result=%errorlevel%
+IF %result% NEQ 0 (
+  IF NOT DEFINED OPENCV_BATCH_MODE (
+    SET "PATH=%PYTHON_DIR%;%PATH%"
+    echo ================================================================================
+    echo **  Type 'python sample_name.py' to run sample
+    echo **  Type 'exit' to exit from interactive shell and open the build directory
+    echo ================================================================================
+    cmd /k echo Current directory: %CD%
+  )
+)
+POPD
+EXIT /B %result%
+
+:rundemo
+PUSHD "%SCRIPT_DIR%\python"
+CALL "%SCRIPT_DIR%\..\..\build\setup_vars_opencv4.cmd"
+%PYTHON% demo.py
+SET result=%errorlevel%
+IF %result% NEQ 0 (
+  IF NOT DEFINED OPENCV_BATCH_MODE ( pause )
+)
+POPD
+EXIT /B %result%
+
+
+:dirname file resultVar
+  setlocal
+  set _dir=%~dp1
+  set _dir=%_dir:~0,-1%
+  endlocal & set %2=%_dir%
+  EXIT /B 0
+
+:regquery name resultVar
+  SETLOCAL
+  FOR /F "tokens=*" %%A IN ('REG QUERY "%1" /reg:64 /ve 2^>NUL ^| FIND "REG_SZ"') DO SET _val=%%A
+  IF "x%_val%x"=="xx" EXIT /B 1
+  SET _val=%_val:*REG_SZ=%
+  FOR /F "tokens=*" %%A IN ("%_val%") DO SET _val=%%A
+  ENDLOCAL & SET %2=%_val%
+  EXIT /B 0

samples/cpp/application_trace.cpp

@@ -41,7 +41,7 @@ int main(int argc, char** argv)
     if (video.size() == 1 && isdigit(video[0]))
         capture.open(parser.get<int>("@video"));
     else
-        capture.open(video);
+        capture.open(samples::findFileOrKeep(video));  // keep GStreamer pipelines
     int nframes = 0;
     if (capture.isOpened())
     {

samples/cpp/bgfg_segm.cpp

@@ -38,7 +38,10 @@ int main(int argc, const char** argv)
     if (file.empty())
         cap.open(camera);
     else
+    {
+        file = samples::findFileOrKeep(file);  // ignore gstreamer pipelines
         cap.open(file.c_str());
+    }
     if (!cap.isOpened())
     {
         cout << "Can not open video stream: '" << (file.empty() ? "<camera>" : file) << "'" << endl;

samples/cpp/calibration.cpp

@@ -285,12 +285,31 @@ static bool readStringList( const string& filename, vector<string>& l )
     FileStorage fs(filename, FileStorage::READ);
     if( !fs.isOpened() )
         return false;
+    size_t dir_pos = filename.rfind('/');
+    if (dir_pos == string::npos)
+        dir_pos = filename.rfind('\\');
     FileNode n = fs.getFirstTopLevelNode();
     if( n.type() != FileNode::SEQ )
         return false;
     FileNodeIterator it = n.begin(), it_end = n.end();
     for( ; it != it_end; ++it )
-        l.push_back((string)*it);
+    {
+        string fname = (string)*it;
+        if (dir_pos != string::npos)
+        {
+            string fpath = samples::findFile(filename.substr(0, dir_pos + 1) + fname, false);
+            if (fpath.empty())
+            {
+                fpath = samples::findFile(fname);
+            }
+            fname = fpath;
+        }
+        else
+        {
+            fname = samples::findFile(fname);
+        }
+        l.push_back(fname);
+    }
     return true;
 }
 
@@ -427,10 +446,10 @@ int main( int argc, char** argv )
 
     if( !inputFilename.empty() )
     {
-        if( !videofile && readStringList(inputFilename, imageList) )
+        if( !videofile && readStringList(samples::findFile(inputFilename), imageList) )
             mode = CAPTURING;
         else
-            capture.open(inputFilename);
+            capture.open(samples::findFileOrKeep(inputFilename));
     }
     else
         capture.open(cameraId);