opencv_contrib_python-3.3.0.9-cp36-cp36m-win_amd64.whl(适用于python3.6 win64)

cv2.error: OpenCV(3.4.3) C:\projects\opencv-python\opencv_contrib\modules\xfeatures2d\src\sift.cpp:1207: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; SetOPENCV_ENABLE_NONFREE CMake option and rebuild the library in function'cv::xfeatures2d::SIFT::create' 通过pip安装opencv-contrib-python后，运行出现上述问题，版本过高导致，可通过官网下载3.3( https://pypi.org/project/opencv-contrib-python/3.3.0.9/#files)，也可下载该资源。