rect = cv2.minAreaRect(cnt)
@R_587_2419@ = cv2.cv.@R_587_2419@Points(rect) # cv2.@R_587_2419@Points(rect) for OpenCV 3.x
@R_587_2419@ = np.int0(@R_587_2419@)
cv2.drawContours(im,[@R_587_2419@],0,(0,0,255),2)
应该可以。
资料来源:
1)http://opencvpython.blogspot.in/2012/06/contours-2-brotherhood.html