EUROGRAPHICS, Date: 2015/05/04 - 2015/05/08, Location: Zürich
Publication date:
2015-05-01
Pages:
61 -
64
Publisher:
The Eurographics Association
EUROGRAPHICS 2015 - Short Papers
Author:
Frederickx, Roald
Bartels, Pieterjan ; Dutré, Philip ; Bickel, Bernd ; Ritschel, Tobias
Keywords:
Lightslice, Virtual Ray Lights, Global Illumination, Rendering, Participating Media, Computer Graphics
Abstract:
We speed up the rendering of participating media with Virtual Ray Lights (VRLs) by clustering them in a preprocessing step. A subset of representative VRLs is then sampled from the clustering, which is used for the final rendering. By performing a full variance analysis, we can explicitly estimate the convergence rate of the rendering process and automatically find the locally ideal number of clusters to maximize efficiency. Overall, we report speed-up factors ranging from 13 to 16 compared to unclustered rendering.