问题：在用python3使用sift = cv2.SIFT()进行SIFT时候，可能会产生错误：AttributeError: module ‘cv2’ has no attribute ‘SIFT’
报错信息： AttributeError Traceback (most recent call last) in () 5 img2 = cv2.imread(‘data/trainImage.jpg’, 0) # trainImage 6 # Initiate SIFT detector ----> 7 sift = cv2.SIFT() 8 # find the keypoints and descriptors with SIFT 9 kp1, des1 = sift.detectAndCompute(img1, None) AttributeError: module ‘cv2’ has no attribute ‘SIFT’
解决：将sift = cv2.SIFT()替换为：sift = cv2.xfeatures2d.SIFT_create()
分析：opencv将SIFT等算法整合到xfeatures2d集合里面了。写法：sift = cv2.xfeatures2d.SIFT_create()
