A simple, fast, and lightweight (just 531 bytes gzipped when minified using Google Closure compiler) motion revealing algorithm using the live webcam feed.
I was trying to devise a super sensitive motion revealing algorithm which was fairly robust against small changes in lighting etc which was capable of running in a fast manner on desktop and mobile devices.
The nice thing about the result is that all non moving pixels converge to a neutral grey colour. Any changes are darker / lighter than that neutral grey colour. Larger shifts leads to greater contrast.