[英]How to detect vertical edges in an image using opencv in python
您可以尝试增强以下代码以根据需要查找垂直边缘
img = cv2.imread("edges.png")
mask = img[:,:,0]
height, width = mask.shape
mask = cv2.threshold(mask, 100, 255, cv2.THRESH_BINARY)[1]
#cv2.imshow("mask", mask)
vertical_kernel = cv2.getStructuringElement(cv2.MORPH_RECT, (1, height//30))
vertical_lines = cv2.erode(mask, vertical_kernel, iterations=1)
vertical_lines = cv2.dilate(vertical_lines, vertical_kernel, iterations=1)
#cv2.imshow("vertical_lines", vertical_lines)
img[vertical_lines > 0, 2] = 255
cv2.imshow("img", img)
cv2.waitKey(0)
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