OpenCV can't draw keypoints
问题 I tried to run the example code shown for ORB in the openCV page. First I had to figure out the problem of cv2.ORB() (changed to cv2.ORB_create() , the after this error, appeared this: Traceback (most recent call last): File "orb.py", line 17, in <module> img2 =cv2.drawKeypoints(img,kp,color=(0,255,0), flags=0) TypeError: Required argument 'outImage' (pos 3) not found After doing a lot of things shown in blogs and manuals, I decided to add img to this function img2 =cv2.drawKeypoints(img,kp