OpenCV3如何使用SIFT和SURF Where did SIFT and SURF go in OpenCV 3?

原文链接：http://www.aichengxu.com/other/6815650.htm

AttributeError: 'module' object has no attribute 'FeatureDetector_create'

改为：

fea_det = cv2.xfeatures2d_SIFT.create()

ERROR：

AttributeError: 'module' object has no attribute 'DescriptorExtractor_create'

改为：