Ishikawa Group Laboratory | Markerless Smart Laser Tracking for HCI @IshikawaLab | Uploaded 14 years ago | Updated 1 hour ago
The problem of tracking hands and fingers on natural scenes has received much attention using passive acquisition vision systems and computationally intense image processing. We are currently studying a simple active tracking system using a laser diode (visible or invisible light), steering mirrors, and a single non-imaging photodetector. The system is capable of acquiring three dimensional coordinates in real time (500 samples/s) without the need of any image processing at all. Essentially, it is a smart rangefinder scanner that instead of continuously scanning over the full field of view, restricts its scanning are to a very narrow window precisely the size of the target.

http://ishikawa-vision.org/perception/SmartLaserTracking/index-e.html