Global Illumination as a Combination of Continuous Random Walk and Finite-Element Based Iteration
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Date
2001
Journal Title
Journal ISSN
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Publisher
Blackwell Publishers Ltd and the Eurographics Association
Abstract
The paper introduces a global illumination method that combines continuous and finite-element approaches, pre-serving the speed of finite-element based iteration and the accuracy of continuous random walks. The basic idea is to decompose the radiance function to a finite-element component that is only a rough estimate and to a difference component that is obtained by Monte-Carlo techniques. Iteration and random walk are handled uniformly in the framework of stochastic iteration. This uniform treatment allows the finite-element component to be built up adap-tively aiming at minimizing the Monte-Carlo component. The method is also suited for interactive walkthrough animation in glossy scenes since when the viewpoint changes, only the small Monte-Carlo component needs to be recomputed.
Description
@article{10.1111:1467-8659.00521,
journal = {Computer Graphics Forum},
title = {{Global Illumination as a Combination of Continuous Random Walk and Finite-Element Based Iteration}},
author = {Szirmay-Kalos, Laszlo and Csonka, Ferenc and Antal, Gyorgy},
year = {2001},
publisher = {Blackwell Publishers Ltd and the Eurographics Association},
ISSN = {1467-8659},
DOI = {10.1111/1467-8659.00521}
}