cnts = cv2.findContours(edged_image.copy(), cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE)cnts = cnts[0] if imutils.is_cv2() else cnts[1]cnts = sorted(cnts, key=cv2.contourArea, reverse=True)[:5] 报错: OpenCV(4.1.1) error: (-215:Assertion failed) npoints >= 0…