OpenCV ORB描述符:TypeError:不正确的self类型(必须是'Feature2D'或其衍生物)

Question

我完全按照这个简单的OpenCV特征匹配示例:

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)

并收到以下错误:

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

我正在使用OpenCV 3.3.1

Answer 1

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

代码应如下所示:

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)

Answer 2

cv2.ORB_create() 会做我认为的工作