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 projectors and a camera to account for many illumination aspects, such as interreflections, refractions, shadows, and defocus. Pre-computing 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.

Wetzstein, G. and Bimber, O.
Radiometric Compensation through Inverse Light Transport
Pacific Graphics, pp. 391-399, 2007

Category:

Science & Technology

Tags:

• computer
• augmented
• reality
• electronics
• environment
• projection