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,...

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Bibliographic Details
Main Authors: Wetzstein, G., Bimber, O.
Format: Conference Proceeding
Language:English
Subjects:
Application software
Calibration
Cameras
Computer graphics
Geometry
Layout
Lighting
Optical modulation
Optical refraction
Radiometry
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Description
Summary: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. 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.
ISSN:1550-4085
DOI:10.1109/PG.2007.47