一、下载安装OpenCV依赖库:
sudo apt-get install build-essential
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
二、下载opencv和opencv_contrib安装包:
1)选择 4.4.0 版本的 Sources 版本: https://opencv.org/releases/
2)下载 opencv_contrib的对应版本:ht