python - OpenCV ORB 描述符 : TypeError: Incorrect type of self (must be 'Feature2D' or its derivative)

Question

我遵循了这个简单的 OpenCV Feature Matching example正是:

import cv2

img = cv2.imread('box.png',0) # queryImage
orb = cv2.ORB()               # Initiate ORB detector

# find the keypoints and descriptors with ORB
kp1, des1 = orb.detectAndCompute(img, None)

出现以下错误:

TypeError: Incorrect type of self (must be 'Feature2D' or its derivative)

我正在使用 OpenCV 3.3.1

Answer 1

这是一个 OpenCV 版本兼容性问题。只需使用 cv2.ORB_create() 而不是 cv2.ORB()。

代码应该是这样的:

import cv2

img = cv2.imread('box.png',0) # queryImage
orb = cv2.ORB_create()        # Initiate SIFT detector

# find the keypoints and descriptors with SIFT
kp1, des1 = orb.detectAndCompute(img, None)