编译安装opencv支持CUDA

cmake \

      -D CMAKE_BUILD_TYPE=RELEASE \

      -D CMAKE_INSTALL_PREFIX=/opt/conda \

      -D INSTALL_PYTHON_EXAMPLES=ON \

      -D INSTALL_C_EXAMPLES=OFF \

      -D OPENCV_ENABLE_NONFREE=ON \

      -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \

      -D OPENCV_GENERATE_PKGCONFIG=ON \

      -D PYTHON_EXECUTABLE=/opt/conda/bin/python3 \

      -D PYTHON_DEFAULT_EXECUTABLE=/opt/conda/bin/python3 \

      -D PYTHON3_INCLUDE_DIR=/opt/conda/include/python3.7m \

      -D PYTHON3_PACKAGES_PATH=/opt/conda/lib/python3.7/site-packages \

      -D BUILD_NEW_PYTHON_SUPPORT=ON \

      -D BUILD_opencv_python3=ON \

      -D HAVE_opencv_python3=ON \

      -D BUILD_EXAMPLES=ON \

      -D WITH_CUDA=ON \

      -D WITH_CUDNN=ON \

      -D OPENCV_DNN_CUDA=ON \

      -D ENABLE_FAST_MATH=ON \

      -D WITH_CUBLAS=ON \

      -D CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.1 \

      -D OpenCL_LIBRARY=/usr/local/cuda-10.1/lib64/libOpenCL.so \

      -D OpenCL_INCLUDE_DIR=/usr/local/cuda-10.1/include/ \

      ..