Fast Stereo-Based Head Tracking for Interactive Environments
FGR '02 Proceedings of the Fifth IEEE International Conference on Automatic Face and Gesture Recognition
A real-time tracker for markerless augmented reality
ISMAR '03 Proceedings of the 2nd IEEE/ACM International Symposium on Mixed and Augmented Reality
Interaction between real and virtual humans: playing checkers
EG VE'00 Proceedings of the 6th Eurographics conference on Virtual Environments
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In this paper, we propose a computer interaction method for a game. The game is played by using finger shadow cast by a projector to move a ball rendered by a computer. We use a camera to track the movement of the finger shadow. A simple algorithm to move this ball was developed, which depends on the position of the shadow in the camera picture. The algorithm consist of three parts: the recognition of the shadow, the calculation of the ball by using transformation matrices, and the recognition of the collision between the ball and the shadow and consequential the direction of the ball-movement.