cmake     -DCMAKE_BUILD_TYPE=Release     -DCMAKE_INSTALL_PREFIX=/usr/local     -DBUILD_PNG=OFF     -DBUILD_TIFF=OFF     -DBUILD_TBB=OFF     -DBUILD_JPEG=OFF     -DBUILD_JASPER=OFF     -DBUILD_ZLIB=OFF     -DBUILD_EXAMPLES=ON     -DBUILD_opencv_java=OFF     -DBUILD_opencv_python2=ON     -DBUILD_opencv_python3=ON     -DENABLE_PRECOMPILED_HEADERS=OFF     -DWITH_OPENCL=OFF     -DWITH_OPENMP=OFF     -DWITH_FFMPEG=ON     -DWITH_GSTREAMER=ON     -DWITH_GSTREAMER_0_10=OFF     -DWITH_CUDA=ON     -DWITH_GTK=ON     -DWITH_VTK=OFF     -DWITH_TBB=ON     -DWITH_1394=OFF     -DWITH_OPENEXR=OFF     -DCUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.2     -DCUDA_ARCH_BIN=6.2     -DCUDA_ARCH_PTX=""     -DINSTALL_C_EXAMPLES=OFF     -DINSTALL_TESTS=OFF     ../

记得将其中的cuda改为自己安装的版本，我的是10.2

CUDA_ARCH改为6.2

报错：CUDA: OpenCV requires enabled ‘cudev‘ module from ‘opencv_contrib‘

解决：将opencv_contrib中的modules中的cudev文件夹复制到opencv/modules里

再cmake便正常了