Specular reflection elimination for projection-based augmented reality

In projection-based augmented reality, specular reflection may distract the users. This paper demonstrates that the specular reflection can be eliminated by redundantly illuminating the projection surface using multiple overlapping projectors mounted at different locations. Our initial system using two projectors is presented. The system automatically determines the pixels which include specular reflection in one projector, blank the light falling on the pixel and boost the other projector's output so that the added light is projected onto the pixel consistently.

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