2011-07-16 17:35:56 +08:00
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import cv2
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2011-06-07 21:45:31 +08:00
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import video
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import sys
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try: fn = sys.argv[1]
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2011-06-15 21:58:40 +08:00
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except: fn = video.presets['chess']
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2011-06-07 21:45:31 +08:00
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def nothing(*arg):
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pass
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cv2.namedWindow('edge')
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2011-06-15 21:58:40 +08:00
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cv2.createTrackbar('thrs1', 'edge', 2000, 5000, nothing)
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cv2.createTrackbar('thrs2', 'edge', 4000, 5000, nothing)
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2011-06-07 21:45:31 +08:00
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cap = video.create_capture(fn)
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while True:
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flag, img = cap.read()
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2011-07-18 21:05:34 +08:00
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gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
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2011-06-07 21:45:31 +08:00
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thrs1 = cv2.getTrackbarPos('thrs1', 'edge')
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thrs2 = cv2.getTrackbarPos('thrs2', 'edge')
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2011-07-03 06:21:19 +08:00
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edge = cv2.Canny(gray, thrs1, thrs2, apertureSize=5)
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2011-06-07 21:45:31 +08:00
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vis = img.copy()
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vis /= 2
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vis[edge != 0] = (0, 255, 0)
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cv2.imshow('edge', vis)
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ch = cv2.waitKey(5)
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if ch == 27:
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break
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