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Created BuildOpenCV4OpenVINO (markdown)
Aleksandr Voron
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BuildOpenCV4OpenVINO.md
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BuildOpenCV4OpenVINO.md
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# Build OpenCV for OpenVINO
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OpenVINO does not provide custom OpenCV drop since 2022.1.1 release.
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If OpenVINO user needs OpenCV functionality there are 2 approaches how to get it:
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1. Get OpenCV from another sources (system repositories, pip, conda, homebrew). It is easy to follow this approach, however it has several disadvantages:
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* OpenCV version is out-of-date
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* OpenCV does not contain G-API module (e.g. some OMZ demos use G-API functionality)
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* OpenCV does not use available CPU instructions since it has build to cover wide range of hardware
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* OpenCV does not support Intel TBB, Intel Media SDK
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* OpenCV DNN module can not use OpenVINO as computational backend
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2. Compile OpenCV from source code. This approach solves the issues mentioned above.
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The instruction below shows how to build OpenCV for OpenVINO.
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## Ubuntu
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1. Install OpenVINO according to the [instruction](https://docs.openvino.ai/latest/openvino_docs_install_guides_installing_openvino_linux.html)
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2. Copy OpenCV repository:
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> git clone --recurse-submodules https://github.com/opencv/opencv.git
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3. Install the following packages:
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> sudo apt-get install \\\
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build-essential \\\
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cmake \\\
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ninja-build \\\
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libgtk-3-dev \\\
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libpng-dev \\\
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libjpeg-dev \\\
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libwebp-dev \\\
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libtiff5-dev \\\
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libopenexr-dev \\\
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libopenblas-dev \\\
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libx11-dev \\\
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libavutil-dev \\\
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libavcodec-dev \\\
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libavformat-dev \\\
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libswscale-dev \\\
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libavresample-devlibavutil-dev \\\
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libavcodec-dev \\\
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libavformat-dev \\\
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libswscale-dev \\\
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libavresample-dev \\\
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ffmpeg-dev \\\
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libtbb2 \\\
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libssl-dev \\\
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libva-dev \\\
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libmfx-dev \\\
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libgstreamer1.0-dev \\\
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libgstreamer-plugins-base1.0-dev
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4. Create build directory and enter into it:
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> mkdir ~/build-opencv && cd ~/build-opencv
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5. Compile OpenCV:
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> cmake -G Ninja \\\
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-D BUILD_INFO_SKIP_EXTRA_MODULES=ON \\\
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-D BUILD_EXAMPLES=OFF \\\
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-D BUILD_JASPER=OFF \\\
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-D BUILD_JAVA=OFF \\\
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-D BUILD_JPEG=ON \\\
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-D BUILD_APPS_LIST=version \\\
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-D BUILD_opencv_apps=ON \\\
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-D BUILD_opencv_java=OFF \\\
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-D BUILD_OPENEXR=OFF \\\
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-D BUILD_PNG=ON \\\
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-D BUILD_TBB=OFF \\\
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-D BUILD_WEBP=OFF \\\
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-D BUILD_ZLIB=ON \\\
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-D WITH_1394=OFF \\\
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-D WITH_CUDA=OFF \\\
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-D WITH_EIGEN=OFF \\\
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-D WITH_GPHOTO2=OFF \\\
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-D WITH_GSTREAMER=ON \\\
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-D OPENCV_GAPI_GSTREAMER=OFF \\\
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-D WITH_GTK_2_X=OFF \\\
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-D WITH_IPP=ON \\\
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-D WITH_JASPER=OFF \\\
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-D WITH_LAPACK=OFF \\\
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-D WITH_MATLAB=OFF \\\
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-D WITH_MFX=ON \\\
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-D WITH_OPENCLAMDBLAS=OFF \\\
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-D WITH_OPENCLAMDFFT=OFF \\\
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-D WITH_OPENEXR=OFF \\\
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-D WITH_OPENJPEG=OFF \\\
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-D WITH_QUIRC=OFF \\\
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-D WITH_TBB=OFF \\\
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-D WITH_TIFF=OFF \\\
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-D WITH_VTK=OFF \\\
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-D WITH_WEBP=OFF \\\
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-D CMAKE_USE_RELATIVE_PATHS=ON \\\
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-D CMAKE_SKIP_INSTALL_RPATH=ON \\\
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-D ENABLE_BUILD_HARDENING=ON \\\
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-D ENABLE_CONFIG_VERIFICATION=ON \\\
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-D ENABLE_PRECOMPILED_HEADERS=OFF \\\
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-D ENABLE_CXX11=ON \\\
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-D INSTALL_PDB=ON \\\
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-D INSTALL_TESTS=ON \\\
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-D INSTALL_C_EXAMPLES=ON \\\
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-D INSTALL_PYTHON_EXAMPLES=ON \\\
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-D CMAKE_INSTALL_PREFIX=install \\\
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-D OPENCV_SKIP_PKGCONFIG_GENERATION=ON \\\
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-D OPENCV_SKIP_PYTHON_LOADER=OFF \\\
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-D OPENCV_SKIP_CMAKE_ROOT_CONFIG=ON \\\
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-D OPENCV_GENERATE_SETUPVARS=OFF \\\
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-D OPENCV_BIN_INSTALL_PATH=bin \\\
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-D OPENCV_INCLUDE_INSTALL_PATH=include \\\
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-D OPENCV_LIB_INSTALL_PATH=lib \\\
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-D OPENCV_CONFIG_INSTALL_PATH=cmake \\\
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-D OPENCV_3P_LIB_INSTALL_PATH=3rdparty \\\
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-D OPENCV_SAMPLES_SRC_INSTALL_PATH=samples \\\
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-D OPENCV_DOC_INSTALL_PATH=doc \\\
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-D OPENCV_OTHER_INSTALL_PATH=etc \\\
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-D OPENCV_LICENSES_INSTALL_PATH=etc/licenses \\\
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-D OPENCV_INSTALL_FFMPEG_DOWNLOAD_SCRIPT=ON \\\
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-D BUILD_opencv_world=OFF \\\
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-D BUILD_opencv_python2=OFF \\\
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-D BUILD_opencv_python3=ON \\\
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-D PYTHON3_PACKAGES_PATH=install/python/python3 \\\
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-D PYTHON3_LIMITED_API=ON \\\
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-D HIGHGUI_PLUGIN_LIST=all \\\
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-D OPENCV_PYTHON_INSTALL_PATH=python \\\
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-D CPU_BASELINE=SSE2 \\\
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-D OPENCV_IPP_GAUSSIAN_BLUR=ON \\\
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-D WITH_INF_ENGINE=ON \\\
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-D InferenceEngine_DIR=<OpenVINO_ROOT_DIRECTORY>/runtime/cmake/ \\\
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-D ngraph_DIR=<OpenVINO_ROOT_DIRECTORY>/runtime/cmake/ \\\
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-D INF_ENGINE_RELEASE=2022010000 \\\
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-D VIDEOIO_PLUGIN_LIST=ffmpeg,gstreamer,mfx \\\
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-D CMAKE_EXE_LINKER_FLAGS=-Wl,--allow-shlib-undefined \\\
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-D CMAKE_BUILD_TYPE=Release <OpenCV_ROOT_REPO_DIRECTORY> && \\\
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ninja
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OpenCV package is available at ~/build-opencv directory.
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To compile application that uses OpenCV, the following environment variables should be specified:
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> export OpenCV_DIR="\~/build-opencv/cmake" \
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> export LD_LIBRARY_PATH="\~/build-opencv/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}" \
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> export PYTHONPATH="~/build-opencv/python_loader${PYTHONPATH:+:$PYTHONPATH}"
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