Precomputed Atmospheric Scattering

We present a new and accurate method to render the atmosphere in real time from any viewpoint from ground level to outer space, while taking Rayleigh and Mie multiple scattering into account. Our method reproduces many effects of the scattering of light, such as the daylight and twilight sky color a...

Full description

Saved in:
Bibliographic Details
Published in:Computer graphics forum Vol. 27; no. 4; pp. 1079 - 1086
Main Authors: Bruneton, Eric, Neyret, Fabrice
Format: Journal Article
Language:English
Published: Oxford, UK Blackwell Publishing Ltd 01.06.2008
Wiley
Series:Special Issue: Proceedings of the 19th Eurographics Symposium on Rendering 2008
Subjects:
Atmosphere
Computer graphics
Computer programming
Computer Science
Graphics
I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism
Light
Simulation
Studies
ISSN:0167-7055, 1467-8659
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present a new and accurate method to render the atmosphere in real time from any viewpoint from ground level to outer space, while taking Rayleigh and Mie multiple scattering into account. Our method reproduces many effects of the scattering of light, such as the daylight and twilight sky color and aerial perspective for all view and light directions, or the Earth and mountain shadows (light shafts) inside the atmosphere. Our method is based on a formulation of the light transport equation that is precomputable for all view points, view directions and sun directions. We show how to store this data compactly and propose a GPU compliant algorithm to precompute it in a few seconds. This precomputed data allows us to evaluate at runtime the light transport equation in constant time, without any sampling, while taking into account the ground for shadows and light shafts.
Bibliography:istex:464E17A0353C2D4D9B170457B1CF1086C4E9B8C2
ArticleID:CGF1245
ark:/67375/WNG-MGF44JF7-P
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
SourceType-Scholarly Journals-2
ObjectType-Feature-2
ObjectType-Conference Paper-1
content type line 23
SourceType-Conference Papers & Proceedings-1
ObjectType-Article-3
ISSN:0167-7055
1467-8659
DOI:10.1111/j.1467-8659.2008.01245.x