brightness / colour tracking in processing

Here i am sitting in the dark waving my phone about:



testing out a brightness tracking script in processing which finds the brightest pixel and puts a huge yellow blob on it. it only seems to work well in the dark, when i tried it out earlier in the day it kept jumping to bright pixels generated by my bright window. might be a bit problematic if i use brightness in my final piece, it'd have to be pretty dark to work.

Whilst researching the BlobDetection library i found puppet show a processing / unreal programmage that uses colour recognition to control a character in an unreal environment.


(you can tell they're cool, they play guitar hero)

here's a video of it in action and how it works:



I'm hoping after some rooting around in their code i'll get colour recognition working.