I'm making a Laser Harp. The application needs the position of the hand along each of the laser beams to modulate a sound synthesis or modify the properties of a sampled instrument. I'm wondering if doing a Color Tracking with OpenCV will do.
- Make the beam visible with fog machine.
- Segmenting the image for each beam.
- Measure the height of the beam.
Other way can be using an infra-red light sensor like Infusion Systems - ReachClose v3.1
What method is more accurate and fail-proof? Any other ideas?