Interactive LED Floor

Here's an idea that I'd quite like to dissect: interactive LED floors. I may have posted about this particular 6mm LED floor earlier during my time here - maybe even last year - but I thought it was worth raising again as a concept for an immersed, interactive space.

The floor here was done by a company called mediatec. I also found a product sheet for the LED floor, but it didn't give much information on how it was designed and built, apart from mentioning the inclusion of UVA Person Tracking and MSAFluid Library in the video. Evidently, this is a hardware medium that you can apply Processing to as well, like so:

If it's not working, click on the 'MSAFluid..' text beneath the embedded screen.