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A Virtual 3D Blackboard |
The expression of 3D concepts in a classroom environment has traditionally been limited to a 2D media, the blackboard. A professor who wishes to communicate the idea of a ``saddle point'' in Calculus must either attempt a 2D chalk rendering or find some physical analogue to display. We have designed a system that can infer the 3D location of a finger, letting users describe a geometrical object in 3D through their gestures. Besides tracking the finger, the system provides, as a byproduct, a partial model of the pose of certain parts of the user's body. In particular, we are able to record the relative 3D positions of a user's finger, elbow, shoulder and head. Af ter initial training for skin detection, the system is fully automated and does not require human intervention.
Associated
publications:
A Virtual 3D Blackboard: 3D Finger Tracking using
a single camera
FG'2000
Fourth IEEE International Conference on Automatic Face and Gesture Recognition
March 26-30, 2000. Grenoble, France.
For Power Point presentation click here