Multi-touch display using combination of FTIR and HD LCD

Authors:
Pavol Fabo;Roman Ďurikovič;Tomoyuki Nishita
Affiliations:
Comenius University, Mlynska dolina, Bratislava, Slovakia;Comenius University, Mlynska dolina, Bratislava, Slovakia;The University of Tokyo, Kashiwanoha, Kashiwa-shi, Chiba, Japan
Venue:
Proceedings of the 13th International Conference on Humans and Computers
Year:
2010

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Abstract

We present a multi touch display prototype based on optical tracking on commonly available LCD display. We describe several possible hardware configurations and discuss their problems. The output from this device is a video sequence that is processed to recognize the gestures. We propose a video preprocessing of input sequence and various applications of our multi touch system coupled with high definition LCD (HD LCD). By comparing the image preprocessing quality using possible setups we show that the method of frustrated total internal reflection (FTIR) gives the best results.