Radiometric Compensation through Inverse Light Transport

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.

• Type: Conference
• Year: 2007
• Where: PG
• Authors: Gordon Wetzstein, Oliver Bimber
• Keywords: Complex Everyday Surfaces, Computer Graphics, Light Transport, PG 2007, Radiometric Compensation Techniques