canny检索边缘轮廓

很懒所以给个代码 def canny(img): cv2.imwrite('canny.jpg', cv2.Canny(img, 200, 300)) image = cv2.imread('canny.jpg') cv2.imshow('canny', image) return image while cv2.waitKey(1) != 27: continue cv2.destroyWindow('canny')