next up previous
Next: Perceptive Spaces Up: Unencumbered Interface Technology Previous: Stereo Vision

Visually Guided Input Devices

 

Robust knowledge of body part position and body pose enables more than just gross gesture recognition. It provides boot-strapping information for other methods to determine more detailed information about the user. Electronically steer-able phased array microphones can use the head position information to reject environmental noise. This provides the signal-to-noise gain necessary for remote microphones to be useful for speech recognition techniques [7]. Active cameras can also take advantage of up-to-date information about body part position to make fine distinctions about facial expression, identity, or hand posture.[8]



Christopher R. Wren
Thu Jul 10 10:04:10 EDT 1997