ubuntu18.4安装opencv4.5.3及contrib模块1.下载解压2.安装opencv
1.下载解压wget -O opencv.zip https://github.com/opencv/opencv/archive/master.zipwget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/master.zipunzip opencv.zipunzip opencv_contrib.zip2.安装opencvmkdir -p build && cd b
