This project aims to create sound from movement. In this processing sketch, the system finds three areas of a particular size and assigns each a continuous tone according to its size associating larger pieces with lower tones. The colors indicate the three sound-generating regions.
The applet has been posted along with the source, although you may have to run it locally in processing to work properly. You will need a video camera attached to your computer. Listen to a sound clip from the synth.