Hi!
I've read many books on Processing and looked everywhere for the right information on what should be used to make a standard interactive floor, but I have failed to find such info. I live in Chile and since we have no careers that deal with these tools and concepts I would like to ask for your guidance.

My objective is to make an interactive floor using Processing, a DLP projector, infrared webcam and IR LAMP.
A person walks into the projected surface and circles interact with the person in a very physics kind of way.

Now, I have gotten circles to interact with each other and the blobs from openCV to appear on screen, but I have failed to connect the blobs with the circles in a natural way.

Can anyone help me?
Are there any books or pdf guides regarding these types of problems?
I normally get 60fps without OpenCV. When I use it, I get like 10fps. Should I be using OpenCV?
Is "Interactive Floor" the right name for this application? Because maybe I've been searching the wrong name.

Please help =D.
I'll leave my email just in case: dyson@vtr.net