title: How do I track motion using OpenCV in Python?
body: <p>I can get frames from my webcam using <a href="http://opencv.willowgarage.com/wiki/" rel="noreferrer">OpenCV</a> in Python. The camshift example is close to what I want, but I don't want human intervention to define the object. I want to get the center point of the total pixels that have changed over the course of several frame, i.e. the center of the moving object.</p>