opencv（Python/c++）:canny边缘检测

python版 import cv2 import numpy img=cv2.imread('dog.jpeg',0) cv2.imwrite('canny.jpeg',cv2.Canny(img,200,300)) cv2.imshow('canny',cv2.imread('canny.jpeg')) cv2.waitKey() cv2.destroyAllWindows() c++版

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