Turning the tables into touchscreens

Scientists from Nara Institute of Science and Technology (NAIST) used a synchronized projector and camera to produce a touchscreen-like interface on a flat surface. Because the camera only registered the user’s fingers when actually in contact with the surface, the need for any additional cameras, depth sensors, or light sources was eliminated. This work may lead to portable projection systems that can be used to create large interactive displays nearly anywhere.

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