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#!/usr/bin/env python
'''
MSER detector demo
==================
Usage:
------
mser.py [<video source>]
Keys:
-----
ESC - exit
'''
import numpy as np
import cv2
import video
if __name__ == '__main__':
import sys
try: video_src = sys.argv[1]
except: video_src = 0
cam = video.create_capture(video_src)
mser = cv2.MSER()
while True:
ret, img = cam.read()
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
vis = img.copy()
regions = mser.detect(gray, None)
hulls = [cv2.convexHull(p.reshape(-1, 1, 2)) for p in regions]
cv2.polylines(vis, hulls, 1, (0, 255, 0))
cv2.imshow('img', vis)
if 0xFF & cv2.waitKey(5) == 27:
break
cv2.destroyAllWindows()
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