您必须具有opencv_contrib和opencv本身的匹配版本.

在opencv github下，转到 OpenCV版本并下载3.2.0(应该与master分支中的相同).

Under the opencv github, go to the OpenCV releases and download the 3.2.0 (it should be the same in the master branch).

现在，转到 https://github.com/opencv/opencv_contrib/releases 并下载3.2.0.然后，您将使两个版本都匹配.

Now, go to https://github.com/opencv/opencv_contrib/releases and download the 3.2.0. Then you will have both versions matching.

之后，在opencv_contrib master分支的README.md上找到的所有cmake命令都应该可以正常工作.

After that all the cmake commands found on the README.md at opencv_contrib master branch should work fine.