Radiometric Compensation through Inverse Light Transport

Wetzstein, Gordon; Bimber, Oliver GND

Radiometric compensation techniques allow seamless projections onto complex everyday surfaces. Implemented with projector-camera systems they support the presentation of visual content in situations where projection-optimized screens are not available or not desired - as in museums, historic sites, air-plane cabins, or stage performances. We propose a novel approach that employs the full light transport between a projector and a camera to account for many illumination aspects, such as interreflections, refractions and defocus. Precomputing the inverse light transport in combination with an efficient implementation on the GPU makes the real-time compensation of captured local and global light modulations possible.

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Wetzstein, Gordon / Bimber, Oliver: Radiometric Compensation through Inverse Light Transport. 2007.

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