Efficient Rendering of Atmospheric Phenomena
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Date
2004
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Rendering of atmospheric bodies involves modeling the complex interaction of light throughout the highly scattering medium of water and air particles. Scattering by these particles creates many well-known atmospheric optical phenomena including rainbows, halos, the corona, and the glory. Unfortunately, most radiative transport approximations in computer graphics are ill-suited to render complex angularly dependent effects in the presence of multiple scattering at reasonable frame rates. Therefore, this paper introduces a multiple-model lighting system that efficiently captures these essential atmospheric effects. We have solved the rendering of fine angularly dependent effects in the presence of multiple scattering by designing a lighting approximation based upon multiple scattering phase functions. This model captures gradual blurring of chromatic atmospheric optical phenomena by handling the gradual angular spreading of the sunlight as it experiences multiple scattering events with anisotropic scattering particles. It has been designed to take advantage of modern graphics hardware; thus, it is capable of rendering these effects at near interactive frame rates.
Description
@inproceedings{:10.2312/EGWR/EGSR04/375-386,
booktitle = {Eurographics Workshop on Rendering},
editor = {Alexander Keller and Henrik Wann Jensen},
title = {{Efficient Rendering of Atmospheric Phenomena}},
author = {Riley, Kirk and Ebert, David S. and Kraus, Martin and Tessendorf, Jerry and Hansen, Charles},
year = {2004},
publisher = {The Eurographics Association},
ISSN = {1727-3463},
ISBN = {3-905673-12-6},
DOI = {/10.2312/EGWR/EGSR04/375-386}
}