The Development and Comparison of Robust Methodsfor Estimating the Fundamental Matrix
International Journal of Computer Vision
Visual touchpad: a two-handed gestural input device
Proceedings of the 6th international conference on Multimodal interfaces
SmartCanvas: a gesture-driven intelligent drawing desk system
Proceedings of the 10th international conference on Intelligent user interfaces
PlayAnywhere: a compact interactive tabletop projection-vision system
Proceedings of the 18th annual ACM symposium on User interface software and technology
Low-cost multi-touch sensing through frustrated total internal reflection
Proceedings of the 18th annual ACM symposium on User interface software and technology
Dynamically reconfigurable vision-based user interfaces
ICVS'03 Proceedings of the 3rd international conference on Computer vision systems
Vision-Based Hand Gesture Interactions for Large LCD-TV Display Tabletop Systems
PCM '08 Proceedings of the 9th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
Multimedia Tools and Applications
3D fingertip and palm tracking in depth image sequences
Proceedings of the 20th ACM international conference on Multimedia
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In this paper we present a framework for a multi-touch surface using multiple cameras. With an overhead camera and a side-mounted camera we determine the fingertip positions. After determining the fundamental matrix that relates the two cameras, we calculate the three dimensional coordinates of the fingertips. The intersection of the epipolar lines from the overhead camera with the fingertips detected in the side camera image provides the fingertip height. Touches are detected when the measured fingertip height from the touch surface is zero. We interpret touch events as hand gestures which can be generalized into commands for manipulating applications. We offer an example application of a multi-touch finger painting program.