Lattice-Boltzmann Lighting

Geist, Robert; Rasche, Karl; Westall, James; Schalkoff, Robert

Lattice-Boltzmann Lighting

Files

355-362.pdf (815.7 KB)

Date

2004

Authors

Geist, Robert
Rasche, Karl
Westall, James
Schalkoff, Robert

Publisher

The Eurographics Association

Abstract

A new technique for lighting participating media is suggested. The technique is based on the lattice-Boltzmann method, which is gaining popularity as alternative to finite-element methods for flow computations, due to its ease of implementation and ability to handle complex boundary conditions. A relatively simple, grid-based photon transport model is postulated and then shown to describe, in the limit, a diffusion process. An application to lighting clouds is provided, where cloud densities are generated by combining two well-established techniques. Performance of the new lighting technique is not real-time, but the technique is highly parallel and does offer an ability to easily represent complex scattering events. Sample renderings are included.

        @inproceedings{:10.2312/EGWR/EGSR04/355-362
,
booktitle = {Eurographics Workshop on Rendering
},
editor = {Alexander Keller and Henrik Wann Jensen
},
title = {{Lattice-Boltzmann Lighting
}},
author = {Geist, Robert and 
Rasche, Karl and 
Westall, James and 
Schalkoff, Robert
},
year = {2004
},
publisher = {The Eurographics Association
},
ISSN = {1727-3463
},
ISBN = {3-905673-12-6
},
DOI = {/10.2312/EGWR/EGSR04/355-362
}
}