邊緣檢測

import cv2 import numpy as np # 1.Canny邊緣檢測 img = cv2.imread('handwriting.jpg', 0) edges = cv2.Canny(img, 30, 70) cv2.imshow('canny', np.hstack((img, edges))) cv2.waitKey(0) # 2.先閾值，後邊緣檢測 # 閾值分割（使

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