网页是 https://opencv.org/releases.html
里面会有各个版本的
楼主下了 2.4.13.6版本的
在环境变量的系统变量的path中添加路径：（x86和x64我觉得就是64位和32位的意思）
D:\OpenCV2.4.13.6\opencv\build\x64\vc14\bin
然后进入VS2015
新建控制台应用程序 后，添加属性表
（属性管理器窗口可以在 视图->其他窗口 中调用出来）
命名：
于是就有了
右键其，选择->属性 在弹出来的窗口中如下选择 按 “包含目录”
添加以下三个目录：
D:\OpenCV2.4.13.6\opencv\build\include
D:\OpenCV2.4.13.6\opencv\build\include\opencv
D:\OpenCV2.4.13.6\opencv\build\include\opencv2
接下来编辑 库目录：
添加：
D:\OpenCV2.4.13.6\opencv\build\x64\vc14\lib
然后添加附加依赖项
【链接器】-->【输入】-->【附加依赖项】，在附加依赖项里添加库文件
opencv_ml2413d.lib
opencv_calib3d2413d.lib
opencv_contrib2413d.lib
opencv_core2413d.lib
opencv_features2d2413d.lib
opencv_flann2413d.lib
opencv_gpu2413d.lib
opencv_highgui2413d.lib
opencv_imgproc2413d.lib
opencv_legacy2413d.lib
opencv_objdetect2413d.lib
opencv_ts2413d.lib
opencv_video2413d.lib
opencv_nonfree2413d.lib
opencv_ocl2413d.lib
opencv_photo2413d.lib
opencv_stitching2413d.lib
opencv_superres2413d.lib
opencv_videostab2413d.lib
【注意】若是你是在Release下，则在【附加依赖项】里添加：
opencv_objdetect2413.lib
opencv_ts2413.lib
opencv_video2413.lib
opencv_nonfree2413.lib
opencv_ocl2413.lib
opencv_photo2413.lib
opencv_stitching2413.lib
opencv_superres2413.lib
opencv_videostab2413.lib
opencv_calib3d2413.lib
opencv_contrib2413.lib
opencv_core2413.lib
opencv_features2d2413.lib
opencv_flann2413.lib
opencv_gpu2413.lib
opencv_highgui2413.lib
opencv_imgproc2413.lib
opencv_legacy2413.lib
opencv_ml2413.lib
【区别】：就是在Debug中后面有字母d，Release下没有d。
下次只需要添加就好了 不需要新建
参考：
https://blog.csdn.net/sinat_36264666/article/details/77914570?locationNum=6&fps=1