Recovering illumination and texture using ratio images
Alejandro Troccoli; Peter K. Allen
- Recovering illumination and texture using ratio images
Allen, Peter K.
- Computer Science
- Permanent URL:
- Book/Journal Title:
- 3DPVT 2006: Third International Symposium on 3D Data Processing, Visualization, and Transmission: June 14-16, 2006, University of North Carolina, Chapel Hill, USA
- Book Author:
- Pollefeys, Marc
- Publisher Location:
- Piscataway, N.J.
- In this paper we consider the problem of factoring illumination and texture from a pair of images of a diffuse object of known geometry. This problem arises frequently in 3D photography applications that use images to acquire photometric properties of a scanned object. Our approach uses the ratio of the images and the geometry information to compute the relative incident irradiance of one image with respect to the other. After the irradiance maps are recovered, we build a spatially varying albedo map, which can then be used to render the object under different illumination conditions. We present two algorithms, one for point-light source illumination, and another one based on spherical harmonics for more general illumination conditions.
- Artificial intelligence
- http://dx.doi.org /10.1109/3DPVT.2006.116
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