Web Cam Optical Flow on a Tablet http://www.brains-N-brawn.com/cameraFlow 8/15/2005 Introduction i have a fetish for non standard user input devices (dont take that out of context). so when i saw that somebody had created a Camera Driven Table Tennis for Mobile Phones, i got really excited. it works by using the camera of the phone to control the table tennis paddle on the screen. this is done by