Function main

官方samples/lk_track.py:92–101

()

                break

def main():
    import sys
    try:
        video_src = sys.argv[1]
    except:
        video_src = 0

    print(__doc__)
    App(video_src).run()
    cv2.destroyAllWindows()

if __name__ == '__main__':
    main()