I'm back to work on the multitouch table project.
In my University, we are building a multitouch table. We decided to try something different from my last post: we want build a hybrid table, a table based on both the FTIR and the DI technique. We refer to the experiece of Johannes Luderschmidt.
First important element that I noticed is that Johannes uses a regular acrilic glass for the surface excluding the Plexiglas EndLighten. Probably the Plexiglas EndLighten could influence the performace because the plexiglass also redirects the IR towards the camera so it produce less contrast compared to normal DI setups.
We'd like to use a hi-res webcam as the Logitech Webcam Pro 9000. I called the Logitech Support Center and they assured me that it's possible to remove the IR filter.
About LEDs: we'd like to try to control LED in frequency (AC) to reduce heat. I'm goingo to investigate more the problem. Also I've apprecieted this link: Led wizard
PS. I put here a cople of links for my furure works: about LED choice and a fun newbie video
