OpenCV Python calcOpticalFlowPyrLK returning points out of the camera frame
<p>Running a 480x640 video through <a href="https://github.com/opencv/opencv/blob/master/samples/python/lk_track.py" rel="nofollow">the Lucas-Kanade optical flow tracker example</a>, I'm getting some tracked points that are beyond the camera frame, like negative x and y coordinates. How is this possible? Is this a bug?</p>