安装完成之后需要配置环境变量(path里面添加D:\OpenCV\opencv\build\x64\vc15\bin;)
在属性中添加VC++包含目录:D:\opencv\build\include;D:\opencv\build\include\opencv;D:\opencv\build\include\opencv2;
添加库目录:D:\opencv\build\x64\vc15\lib;
接下来还要在链接器输入中添加附加依赖项:opencv_world341.lib;opencv_world341d.lib;
原文：https://www.cnblogs.com/jindapeng/p/9597698.html