31 lines
965 B
Python
31 lines
965 B
Python
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import cv2
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import numpy as np
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import time
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lowThreshold = 0
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max_lowThreshold = 100
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maxThreshold = 100
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max_maxThreshold = 200
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kernel_size = 3
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def canny_low_threshold(intial):
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blur = cv2.GaussianBlur(img, (3, 3), 0)
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canny = cv2.Canny(blur, intial,maxThreshold) # x是最小阈值,y是最大阈值
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cv2.imshow('canny', canny)
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def canny_max_threshold(intial):
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blur = cv2.GaussianBlur(img, (3, 3), 0)
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canny = cv2.Canny(blur, lowThreshold,intial) # x是最小阈值,y是最大阈值
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cv2.imshow('canny', canny)
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img = cv2.imread('pic/1.png',0) # 后面参数0即是以灰度读取
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cv2.namedWindow('canny', cv2.WINDOW_NORMAL | cv2.WINDOW_KEEPRATIO)
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cv2.createTrackbar('Min threshold', 'canny', lowThreshold, max_lowThreshold, canny_low_threshold)
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cv2.createTrackbar('Max threshold', 'canny', maxThreshold, max_maxThreshold, canny_max_threshold)
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canny_low_threshold(0)
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if cv2.waitKey(0) == 27: # 27是ESC键值
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cv2.destroyAllWindows()
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