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934e6899f8
imgcodecs: Add rgb flag for imread and imdecode #25809 Try to `imread` images by RGB to save R-B swapping costs. ## How to use it? ``` img_rgb = cv2.imread("PATH", IMREAD_COLOR_RGB) # OpenCV decode the image by RGB format. ``` ## TODO - [x] Fix the broken code - [x] Add imread rgb test - [x] Speed test of rgb mode. ## Performance test | file name | IMREAD_COLOR | IMREAD_COLOR_RGB | | --------- | ------ | --------- | | jpg01 | 284 ms | 277 ms | | jpg02 | 376 ms | 366 ms | | png01 | 62 ms | 60 ms | | Png02 | 97 ms | 94 ms | Test with [image_test.zip](https://github.com/user-attachments/files/15982949/image_test.zip) ```.cpp string img_path = "/Users/mzh/work/data/image_test/png02.png"; int loop = 20; TickMeter t; double t0 = 10000; for (int i = 0; i < loop; i++) { t.reset(); t.start(); img_bgr = imread(img_path, IMREAD_COLOR); t.stop(); if (t.getTimeMilli() < t0) t0 = t.getTimeMilli(); } std::cout<<"bgr time = "<<t0<<std::endl; t0 = 10000; for (int i = 0; i < loop; i++) { t.reset(); t.start(); img_rgb = imread(img_path, IMREAD_COLOR_RGB); t.stop(); if (t.getTimeMilli() < t0) t0 = t.getTimeMilli(); } std::cout<<"rgb time = "<<t0<<std::endl; ``` ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
514 lines
16 KiB
C++
514 lines
16 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "test_precomp.hpp"
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namespace opencv_test { namespace {
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typedef tuple<string, int> File_Mode;
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typedef testing::TestWithParam<File_Mode> Imgcodecs_FileMode;
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TEST_P(Imgcodecs_FileMode, regression)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string filename = root + get<0>(GetParam());
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const int mode = get<1>(GetParam());
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const Mat single = imread(filename, mode);
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ASSERT_FALSE(single.empty());
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vector<Mat> pages;
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ASSERT_TRUE(imreadmulti(filename, pages, mode));
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ASSERT_FALSE(pages.empty());
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const Mat page = pages[0];
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ASSERT_FALSE(page.empty());
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EXPECT_EQ(page.channels(), single.channels());
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EXPECT_EQ(page.depth(), single.depth());
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EXPECT_EQ(page.size().height, single.size().height);
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EXPECT_EQ(page.size().width, single.size().width);
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EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), page, single);
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}
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const string all_images[] =
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{
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#if (defined(HAVE_JASPER) && defined(OPENCV_IMGCODECS_ENABLE_JASPER_TESTS)) \
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|| defined(HAVE_OPENJPEG)
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"readwrite/Rome.jp2",
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"readwrite/Bretagne2.jp2",
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"readwrite/Bretagne2.jp2",
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"readwrite/Grey.jp2",
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"readwrite/Grey.jp2",
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"readwrite/balloon.j2c",
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#endif
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#ifdef HAVE_GDCM
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"readwrite/int16-mono1.dcm",
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"readwrite/uint8-mono2.dcm",
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"readwrite/uint16-mono2.dcm",
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"readwrite/uint8-rgb.dcm",
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#endif
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#if defined(HAVE_PNG) || defined(HAVE_SPNG)
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"readwrite/color_palette_alpha.png",
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#endif
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#ifdef HAVE_TIFF
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"readwrite/multipage.tif",
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#endif
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"readwrite/ordinary.bmp",
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"readwrite/rle8.bmp",
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#ifdef HAVE_JPEG
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"readwrite/test_1_c1.jpg",
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#endif
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#ifdef HAVE_IMGCODEC_HDR
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"readwrite/rle.hdr"
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#endif
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};
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const int basic_modes[] =
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{
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IMREAD_UNCHANGED,
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IMREAD_GRAYSCALE,
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IMREAD_COLOR,
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IMREAD_COLOR_RGB,
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IMREAD_ANYDEPTH,
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IMREAD_ANYCOLOR
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};
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INSTANTIATE_TEST_CASE_P(All, Imgcodecs_FileMode,
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testing::Combine(
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testing::ValuesIn(all_images),
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testing::ValuesIn(basic_modes)));
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// GDAL does not support "hdr", "dcm" and has problems with JPEG2000 files (jp2, j2c)
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struct notForGDAL {
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bool operator()(const string &name) const {
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const string &ext = name.substr(name.size() - 3, 3);
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return ext == "hdr" || ext == "dcm" || ext == "jp2" || ext == "j2c" ||
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name.find("rle8.bmp") != std::string::npos;
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}
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};
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inline vector<string> gdal_images()
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{
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vector<string> res;
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std::back_insert_iterator< vector<string> > it(res);
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std::remove_copy_if(all_images, all_images + sizeof(all_images)/sizeof(all_images[0]), it, notForGDAL());
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return res;
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}
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INSTANTIATE_TEST_CASE_P(GDAL, Imgcodecs_FileMode,
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testing::Combine(
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testing::ValuesIn(gdal_images()),
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testing::Values(IMREAD_LOAD_GDAL)));
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//==================================================================================================
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typedef tuple<string, Size> Ext_Size;
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typedef testing::TestWithParam<Ext_Size> Imgcodecs_ExtSize;
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TEST_P(Imgcodecs_ExtSize, write_imageseq)
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{
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const string ext = get<0>(GetParam());
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const Size size = get<1>(GetParam());
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const Point2i center = Point2i(size.width / 2, size.height / 2);
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const int radius = std::min(size.height, size.width / 4);
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for (int cn = 1; cn <= 4; cn++)
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{
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SCOPED_TRACE(format("channels %d", cn));
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std::vector<int> parameters;
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if (cn == 2)
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continue;
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if (cn == 4 && ext != ".tiff")
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continue;
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if (cn > 1 && (ext == ".pbm" || ext == ".pgm"))
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continue;
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if (cn != 3 && ext == ".ppm")
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continue;
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string filename = cv::tempfile(format("%d%s", cn, ext.c_str()).c_str());
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Mat img_gt(size, CV_MAKETYPE(CV_8U, cn), Scalar::all(0));
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circle(img_gt, center, radius, Scalar::all(255));
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#if 1
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if (ext == ".pbm" || ext == ".pgm" || ext == ".ppm")
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{
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parameters.push_back(IMWRITE_PXM_BINARY);
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parameters.push_back(0);
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}
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#endif
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ASSERT_TRUE(imwrite(filename, img_gt, parameters));
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Mat img = imread(filename, IMREAD_UNCHANGED);
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ASSERT_FALSE(img.empty());
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EXPECT_EQ(img.size(), img.size());
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EXPECT_EQ(img.type(), img.type());
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EXPECT_EQ(cn, img.channels());
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if (ext == ".jpg")
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{
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// JPEG format does not provide 100% accuracy
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// using fuzzy image comparison
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double n = cvtest::norm(img, img_gt, NORM_L1);
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double expected = 0.07 * img.size().area();
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EXPECT_LT(n, expected);
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EXPECT_PRED_FORMAT2(cvtest::MatComparator(10, 0), img, img_gt);
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}
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else if (ext == ".pfm")
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{
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img_gt.convertTo(img_gt, CV_MAKETYPE(CV_32F, img.channels()));
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double n = cvtest::norm(img, img_gt, NORM_L2);
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EXPECT_LT(n, 1.);
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EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), img, img_gt);
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}
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else
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{
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double n = cvtest::norm(img, img_gt, NORM_L2);
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EXPECT_LT(n, 1.);
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EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), img, img_gt);
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}
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#if 0
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imshow("loaded", img);
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waitKey(0);
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#else
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EXPECT_EQ(0, remove(filename.c_str()));
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#endif
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}
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}
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const string all_exts[] =
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{
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#if defined(HAVE_PNG) || defined(HAVE_SPNG)
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".png",
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#endif
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#ifdef HAVE_TIFF
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".tiff",
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#endif
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#ifdef HAVE_JPEG
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".jpg",
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#endif
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".bmp",
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#ifdef HAVE_IMGCODEC_PXM
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".pam",
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".ppm",
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".pgm",
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".pbm",
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".pnm",
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#endif
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#ifdef HAVE_IMGCODEC_PFM
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".pfm",
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#endif
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};
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vector<Size> all_sizes()
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{
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vector<Size> res;
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for (int k = 1; k <= 5; ++k)
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res.push_back(Size(640 * k, 480 * k));
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return res;
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}
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INSTANTIATE_TEST_CASE_P(All, Imgcodecs_ExtSize,
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testing::Combine(
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testing::ValuesIn(all_exts),
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testing::ValuesIn(all_sizes())));
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#ifdef HAVE_IMGCODEC_PXM
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typedef testing::TestWithParam<bool> Imgcodecs_pbm;
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TEST_P(Imgcodecs_pbm, write_read)
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{
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bool binary = GetParam();
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const String ext = "pbm";
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const string full_name = cv::tempfile(ext.c_str());
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Size size(640, 480);
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const Point2i center = Point2i(size.width / 2, size.height / 2);
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const int radius = std::min(size.height, size.width / 4);
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Mat image(size, CV_8UC1, Scalar::all(0));
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circle(image, center, radius, Scalar::all(255));
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vector<int> pbm_params;
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pbm_params.push_back(IMWRITE_PXM_BINARY);
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pbm_params.push_back(binary);
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imwrite( full_name, image, pbm_params );
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Mat loaded = imread(full_name, IMREAD_UNCHANGED);
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ASSERT_FALSE(loaded.empty());
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EXPECT_EQ(0, cvtest::norm(loaded, image, NORM_INF));
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FILE *f = fopen(full_name.c_str(), "rb");
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ASSERT_TRUE(f != NULL);
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ASSERT_EQ('P', getc(f));
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ASSERT_EQ('1' + (binary ? 3 : 0), getc(f));
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fclose(f);
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EXPECT_EQ(0, remove(full_name.c_str()));
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}
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INSTANTIATE_TEST_CASE_P(All, Imgcodecs_pbm, testing::Bool());
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#endif
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//==================================================================================================
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TEST(Imgcodecs_Bmp, read_rle8)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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Mat rle = imread(root + "readwrite/rle8.bmp");
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ASSERT_FALSE(rle.empty());
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Mat ord = imread(root + "readwrite/ordinary.bmp");
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ASSERT_FALSE(ord.empty());
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EXPECT_LE(cvtest::norm(rle, ord, NORM_L2), 1.e-10);
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EXPECT_PRED_FORMAT2(cvtest::MatComparator(0, 0), rle, ord);
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}
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TEST(Imgcodecs_Bmp, read_32bit_rgb)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string filenameInput = root + "readwrite/test_32bit_rgb.bmp";
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const Mat img = cv::imread(filenameInput, IMREAD_UNCHANGED);
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ASSERT_FALSE(img.empty());
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ASSERT_EQ(CV_8UC3, img.type());
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}
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TEST(Imgcodecs_Bmp, rgba_bit_mask)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string filenameInput = root + "readwrite/test_rgba_mask.bmp";
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const Mat img = cv::imread(filenameInput, IMREAD_UNCHANGED);
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ASSERT_FALSE(img.empty());
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ASSERT_EQ(CV_8UC4, img.type());
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const uchar* data = img.ptr();
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ASSERT_EQ(data[3], 255);
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}
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TEST(Imgcodecs_Bmp, read_32bit_xrgb)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string filenameInput = root + "readwrite/test_32bit_xrgb.bmp";
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const Mat img = cv::imread(filenameInput, IMREAD_UNCHANGED);
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ASSERT_FALSE(img.empty());
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ASSERT_EQ(CV_8UC4, img.type());
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const uchar* data = img.ptr();
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ASSERT_EQ(data[3], 255);
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}
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TEST(Imgcodecs_Bmp, rgba_scale)
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{
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const string root = cvtest::TS::ptr()->get_data_path();
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const string filenameInput = root + "readwrite/test_rgba_scale.bmp";
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Mat img = cv::imread(filenameInput, IMREAD_UNCHANGED);
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ASSERT_FALSE(img.empty());
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ASSERT_EQ(CV_8UC4, img.type());
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uchar* data = img.ptr();
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ASSERT_EQ(data[0], 255);
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ASSERT_EQ(data[1], 255);
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ASSERT_EQ(data[2], 255);
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ASSERT_EQ(data[3], 255);
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img = cv::imread(filenameInput, IMREAD_COLOR);
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ASSERT_FALSE(img.empty());
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ASSERT_EQ(CV_8UC3, img.type());
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img = cv::imread(filenameInput, IMREAD_COLOR_RGB);
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ASSERT_FALSE(img.empty());
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ASSERT_EQ(CV_8UC3, img.type());
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data = img.ptr();
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ASSERT_EQ(data[0], 255);
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ASSERT_EQ(data[1], 255);
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ASSERT_EQ(data[2], 255);
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img = cv::imread(filenameInput, IMREAD_GRAYSCALE);
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ASSERT_FALSE(img.empty());
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ASSERT_EQ(CV_8UC1, img.type());
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data = img.ptr();
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ASSERT_EQ(data[0], 255);
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}
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#ifdef HAVE_IMGCODEC_HDR
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TEST(Imgcodecs_Hdr, regression)
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{
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string folder = string(cvtest::TS::ptr()->get_data_path()) + "/readwrite/";
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string name_rle = folder + "rle.hdr";
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string name_no_rle = folder + "no_rle.hdr";
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Mat img_rle = imread(name_rle, -1);
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ASSERT_FALSE(img_rle.empty()) << "Could not open " << name_rle;
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Mat img_no_rle = imread(name_no_rle, -1);
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ASSERT_FALSE(img_no_rle.empty()) << "Could not open " << name_no_rle;
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EXPECT_EQ(cvtest::norm(img_rle, img_no_rle, NORM_INF), 0.0);
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string tmp_file_name = tempfile(".hdr");
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vector<int> param(2);
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param[0] = IMWRITE_HDR_COMPRESSION;
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for(int i = 0; i < 2; i++) {
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param[1] = i;
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imwrite(tmp_file_name, img_rle, param);
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Mat written_img = imread(tmp_file_name, -1);
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EXPECT_EQ(cvtest::norm(written_img, img_rle, NORM_INF), 0.0);
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}
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remove(tmp_file_name.c_str());
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}
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TEST(Imgcodecs_Hdr, regression_imencode)
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{
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string folder = string(cvtest::TS::ptr()->get_data_path()) + "/readwrite/";
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string name = folder + "rle.hdr";
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Mat img_ref = imread(name, -1);
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ASSERT_FALSE(img_ref.empty()) << "Could not open " << name;
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vector<int> params(2);
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params[0] = IMWRITE_HDR_COMPRESSION;
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{
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vector<uchar> buf;
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params[1] = IMWRITE_HDR_COMPRESSION_NONE;
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imencode(".hdr", img_ref, buf, params);
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Mat img = imdecode(buf, -1);
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EXPECT_EQ(cvtest::norm(img_ref, img, NORM_INF), 0.0);
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}
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{
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vector<uchar> buf;
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params[1] = IMWRITE_HDR_COMPRESSION_RLE;
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imencode(".hdr", img_ref, buf, params);
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Mat img = imdecode(buf, -1);
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EXPECT_EQ(cvtest::norm(img_ref, img, NORM_INF), 0.0);
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}
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}
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#endif
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#ifdef HAVE_IMGCODEC_PXM
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TEST(Imgcodecs_Pam, read_write)
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{
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string folder = string(cvtest::TS::ptr()->get_data_path()) + "readwrite/";
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string filepath = folder + "lena.pam";
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cv::Mat img = cv::imread(filepath);
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ASSERT_FALSE(img.empty());
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std::vector<int> params;
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params.push_back(IMWRITE_PAM_TUPLETYPE);
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params.push_back(IMWRITE_PAM_FORMAT_RGB);
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string writefile = cv::tempfile(".pam");
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EXPECT_NO_THROW(cv::imwrite(writefile, img, params));
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cv::Mat reread = cv::imread(writefile);
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string writefile_no_param = cv::tempfile(".pam");
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EXPECT_NO_THROW(cv::imwrite(writefile_no_param, img));
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cv::Mat reread_no_param = cv::imread(writefile_no_param);
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|
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EXPECT_EQ(0, cvtest::norm(reread, reread_no_param, NORM_INF));
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EXPECT_EQ(0, cvtest::norm(img, reread, NORM_INF));
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|
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remove(writefile.c_str());
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remove(writefile_no_param.c_str());
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}
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#endif
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|
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#ifdef HAVE_IMGCODEC_PFM
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TEST(Imgcodecs_Pfm, read_write)
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{
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Mat img = imread(findDataFile("readwrite/lena.pam"));
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ASSERT_FALSE(img.empty());
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img.convertTo(img, CV_32F, 1/255.0f);
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|
|
|
std::vector<int> params;
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string writefile = cv::tempfile(".pfm");
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EXPECT_NO_THROW(cv::imwrite(writefile, img, params));
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|
cv::Mat reread = cv::imread(writefile, IMREAD_UNCHANGED);
|
|
|
|
string writefile_no_param = cv::tempfile(".pfm");
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|
EXPECT_NO_THROW(cv::imwrite(writefile_no_param, img));
|
|
cv::Mat reread_no_param = cv::imread(writefile_no_param, IMREAD_UNCHANGED);
|
|
|
|
EXPECT_EQ(0, cvtest::norm(reread, reread_no_param, NORM_INF));
|
|
EXPECT_EQ(0, cvtest::norm(img, reread, NORM_INF));
|
|
|
|
EXPECT_EQ(0, remove(writefile.c_str()));
|
|
EXPECT_EQ(0, remove(writefile_no_param.c_str()));
|
|
}
|
|
#endif
|
|
|
|
TEST(Imgcodecs, write_parameter_type)
|
|
{
|
|
cv::Mat m(10, 10, CV_8UC1, cv::Scalar::all(0));
|
|
cv::Mat1b m_type = cv::Mat1b::zeros(10, 10);
|
|
string tmp_file = cv::tempfile(".bmp");
|
|
EXPECT_NO_THROW(cv::imwrite(tmp_file, cv::Mat(m * 2))) << "* Failed with cv::Mat";
|
|
EXPECT_NO_THROW(cv::imwrite(tmp_file, m * 2)) << "* Failed with cv::MatExpr";
|
|
EXPECT_NO_THROW(cv::imwrite(tmp_file, m_type)) << "* Failed with cv::Mat_";
|
|
EXPECT_NO_THROW(cv::imwrite(tmp_file, m_type * 2)) << "* Failed with cv::MatExpr(Mat_)";
|
|
cv::Matx<uchar, 10, 10> matx;
|
|
EXPECT_NO_THROW(cv::imwrite(tmp_file, matx)) << "* Failed with cv::Matx";
|
|
EXPECT_EQ(0, remove(tmp_file.c_str()));
|
|
}
|
|
|
|
TEST(Imgcodecs, imdecode_user_buffer)
|
|
{
|
|
cv::Mat encoded = cv::Mat::zeros(1, 1024, CV_8UC1);
|
|
cv::Mat user_buffer(1, 1024, CV_8UC1);
|
|
cv::Mat result = cv::imdecode(encoded, IMREAD_ANYCOLOR, &user_buffer);
|
|
EXPECT_TRUE(result.empty());
|
|
// the function does not release user-provided buffer
|
|
EXPECT_FALSE(user_buffer.empty());
|
|
|
|
result = cv::imdecode(encoded, IMREAD_ANYCOLOR);
|
|
EXPECT_TRUE(result.empty());
|
|
}
|
|
|
|
}} // namespace
|
|
|
|
#if defined(HAVE_OPENEXR) && defined(OPENCV_IMGCODECS_ENABLE_OPENEXR_TESTS)
|
|
#include "test_exr.impl.hpp"
|
|
#endif
|