win10 vs2015 cmake3.18.0 opencv4.5.1 opencv_contrib4.5.1 编译攻略
一、前期准备:需要下载的部分有四个:OpenCV,OpenCV_contrib,CMake,VisualStudio1.下载OpenCVandOpenCV_contrib,要求是匹配的同版本,并解压缩存储到同一文件夹下;下载OpenCV链接:https://opencv.org/releases/下载OpenCV_contrib链接:https://github.com/opencv/opencv