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FTIR (frustrated total internal reflection)

Uploaded by: sokol
Video Description:
Multi-Touch Sensing through Frustrated Total Internal Reflection
Detecting multiple finger touches on a rear-projection surface. We introduce a simple technique that enables robust multi-touch sensing at a minimum of engineering effort and expense. It relies on frustrated total internal reflection (FTIR), a technique familiar to the biometrics community where
it is used for fingerprint image acquisition. It acquires true touch information at high spatial and temporal resolutions, and is scalable to very large installations. Han, J. Y. 2005. Low-Cost Multi-Touch Sensing through Frustrated Total Internal Reflection. In Proceedings of the 18th Annual ACM S
ymposium on User Interface Software and Technology www.advancedgui.com

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