Researchers at TUM have developed an LCD multitouch setup using an overhead camera and FTIR technology. The authors call the combination Inverted FTIR.
The main difference of Inverted FTIR compared with FTIR multi touch comes from the fact that camera is placed over the screen. So, an LCD display is easily integrated into the FTIR multi touch system.
F. Echtler, A. Dippon, M. Tonnis, and G. Klinker, "Inverted FTIR: Easy Multitouch Sensing for Flatscreens," in ITS2009 Banff, Canada, 2009. http://campar.in.tum.de/Chair/PublicationDetail?pub=echtler2009inverse
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