python - OpenCV can't find ORB -


in previous question learned had install opencv-contrib in order use opencv python external modules such sift. in project, however, want use orb or similar. cv2.orb() not work, nor cv2.xfeatures2d.orb_create() or other agglutination of commands.

as knows, opencv has rather poor documentation python api.

how use orb match features in opencv python?

mwe:

#!/usr/bin/python2.7 import numpy np import cv2 matplotlib import pyplot plt  img = cv2.imread('smallburger.jpg',0)  # initiate star detector orb = cv2.orb()  # find keypoints orb kp = orb.detect(img,none)  # compute descriptors orb kp, des = orb.compute(img, kp)  # draw keypoints location,not size , orientation img2 = cv2.drawkeypoints(img,kp,color=(0,255,0), flags=0) plt.imshow(img2),plt.show()

cli output:

traceback (most recent call last):   file "./mwe.py", line 9, in <module>     orb = cv2.orb() attributeerror: 'module' object has no attribute 'orb'

silly opencv. it's cv2.orb_create().


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