1、下载源码
git clone https://github.com/opencv/opencv.git
或git clone git://github.com/Itseez/opencv.git
2、进入文件夹进行make
mkdir release
cd release
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
make
make install
3、为了在python中可以用
python3 -mpip install -U opencv-python