I could do that, I fact I just might, Though I will probably use new IR LED's.http://n.camil.chez-alice.fr/index.php
this is the software i'm going to try when i've assembled the led array. It looks pretty well featured and you can see how it responds in the videos he's posted with the system running.
You can find full instructions on the site for how to construct and use the hardware, if you look at it, you might be surprised at how simple this is... the trick to it is positioning everything precisely but essentially straightforward
I've decided i'm going to try and make this entirely out of recycled parts, tomorrow hopefully i'll be able to get up to see my folks and get some of my stuff thats in storage there, soldering iron, and i might have a couple of old remote controls (i hoard old junk just for this type of scenario) up there that i can take apart for their precious LED's i've also got a box of components and old circuit boards so i can hopefully scrounge the resistors and cabling i need.
for the framework to seat the LED's i'm actually going to see if my old Lego technic is up there, seems like it would be a simple build, strong enough and easily adjustable. also wouldn't be as prone to bending as the wire solution offered on that page. If it works properly - and i might have problems with differing strength LEDs so may relent and order a set from somewhere - then i'll fabricate a better frame to hold the LED's from sheet acrylic, which should look a lot better than wire, or lego technic hanging off my head.
Just got to find a Webcam cheap. Off too Ebay