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all video processing samples use camera as default source (and fallback to synth in case of capture error)

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Alexander Mordvintsev
2011-08-22 13:36:21 +00:00
parent df49158863
commit fc771363d3
8 changed files with 42 additions and 32 deletions
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6
samples/python2/motempl.py
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@@ -12,21 +12,21 @@ def draw_motion_comp(vis, (x, y, w, h), angle, color):
cv2.rectangle(vis, (x, y), (x+w, y+h), (0, 255, 0))
r = min(w/2, h/2)
cx, cy = x+w/2, y+h/2
angle = angle*3.1415926/180
angle = angle*np.pi/180
cv2.circle(vis, (cx, cy), r, color, 3)
cv2.line(vis, (cx, cy), (int(cx+np.cos(angle)*r), int(cy+np.sin(angle)*r)), color, 3)
if __name__ == '__main__':
import sys
try: video_src = sys.argv[1]
except: video_src = 'synth:class=chess:bg=../cpp/lena.jpg:noise=0.01'
except: video_src = 0
cv2.namedWindow('motempl')
visuals = ['input', 'frame_diff', 'motion_hist', 'grad_orient']
cv2.createTrackbar('visual', 'motempl', 2, len(visuals)-1, nothing)
cv2.createTrackbar('threshold', 'motempl', DEFAULT_THRESHOLD, 255, nothing)
cam = video.create_capture(video_src)
cam = video.create_capture(video_src, fallback='synth:class=chess:bg=../cpp/lena.jpg:noise=0.01')
ret, frame = cam.read()
h, w = frame.shape[:2]
prev_frame = frame.copy()