The videoclip below is a demonstration of the prototype of SecondLight, a Surface-like application developed by a team of researchers at Microsoft Research UK. If you place a tracing-paper like object on the surface, secondary information regarding the content on the surface can be revealed. The system relies on a projector system and a special liquid crystal on the display.The system has two hi-res cameras, two projectors with optical shutters, infrared illumination, and an electrically switchable diffuser.SecondLight can track images from a distance, track IR reflective objects, and also track IR emissive objects with mobile, multi-point touch detection.
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