Ubuntu18.04安装OpenCV4.0.0和OpenCV-contrib模块

PS：不愿意看全文的直接跳代码部分就可以 1.安装依赖 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 p

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