Precomputed Radiance Transfer Field for Rendering Interreflections in Dynamic Scenes
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Date
2007
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association and Blackwell Publishing Ltd
Abstract
In this paper, we introduce a new representation - radiance transfer fields (RTF) - for rendering interreflections in dynamic scenes under low frequency illumination. The RTF describes the radiance transferred by an individual object to its surrounding space as a function of the incident radiance. An important property of RTF is its independence of the scene configuration, enabling interreflection computation in dynamic scenes. Secondly, RTFs naturally fit in with the rendering framework of precomputed shadow fields, incurring negligible cost to add interreflection effects. In addition, RTFs can be used to compute interreflections for both diffuse and glossy objects. We also show that RTF data can be highly compressed by clustered principal component analysis (CPCA), which not only reduces the memory cost but also accelerates rendering. Finally, we present some experimental results demonstrating our techniques.
Description
@article{10.1111:j.1467-8659.2007.01071.x,
journal = {Computer Graphics Forum},
title = {{Precomputed Radiance Transfer Field for Rendering Interreflections in Dynamic Scenes}},
author = {Pan, Minghao and Wang Xinguo Liu, Rui and Peng, Qunsheng and Bao, Hujun},
year = {2007},
publisher = {The Eurographics Association and Blackwell Publishing Ltd},
ISSN = {1467-8659},
DOI = {10.1111/j.1467-8659.2007.01071.x}
}