运行 cv2.xfeatures2d.SIFT_create () 时报错

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异常

错误代码

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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; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in function 'cv::xfeatures2d::SIFT::create'

貌似是该算法被申请了专利还是咋的，将 opencv 版本退到 3.4.2 即可解决

解决方法

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pip install opencv-python==3.4.2.16
pip install opencv-contrib-python==3.4.2.16

附件

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