(Multi)Touchscreen mania

After watching Jeff Han presentations and all the hype about iPhone I’ve caught this mania too. Actually I plan to build a multitouch screen for myself during next semester. It’s not that difficult. You need just a projector, a camera, couple of infrared LED’s and of course a little bit of programming But that is the future…

Because of the Christmas I have plenty of free time and as always I’m spending some part of it on looking for inspiration on the net. First I’ve came across Delicate Boundaries by Chris Sugrue. After following the links I’ve found post about Faking a Multi-TouchScreen. The idea seemed so simple that I decided to try implementing it in Processing.

Here is my setup:

Because I have Logitech Communicate STX Plus which doesn’t come with drivers for Mac OS X, I had to use open source project macam to get access to the video.

After about 4 hours of programming I ended with this algorithm…

… and results like these: