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Proceedings Article, Paper
@InProceedings
Beitrag in Tagungsband, Workshop

Author, Editor
Author(s):
Elek, Oskar
Ritschel, Tobias
Wilkie, Alexander
Seidel, Hans-Peter
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Not MPG Author(s):
Wilkie, Alexander
Editor(s):
Brooks, Stephen
Hawkey, Kirstie
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Not MPII Editor(s):
Brooks, Stephen
Hawkey, Kirstie
BibTeX cite key*:
Elek2012a
Title, Booktitle
Title*:
Interactive cloud rendering using temporally-coherent photon mapping
Booktitle*:
Proceedings of Graphics Interface 2012
Event, URLs
Conference URL::
http://www.graphicsinterface.org/
Downloading URL:
Event Address*:
Toronto, Canada
Language:
English
Event Date*
(no longer used):
Organization:
Canadian Information Processing Society
Event Start Date:
28 May 2012
Event End Date:
30 May 2012
Publisher
Name*:
Canadian Information Processing Society
URL:
Address*:
Toronto, Ontario, Canada
Type:
Vol, No, Year, pp.
Series:
Graphics Interface 2012
Volume:
Number:
Month:
May
Pages:
141-148
Year*:
2012
VG Wort Pages:
8
ISBN/ISSN:
Sequence Number:
DOI:
Note, Abstract, ©
(LaTeX) Abstract:
This paper presents an interactive algorithm for simulation of light transport in clouds. Exploiting the high temporal coherence of the typical illumination and morphology of clouds we build on volumetric photon mapping, which we modify to allow for interactive rendering speeds --- instead of building a fresh irregular photon map for every scene state change we accumulate photon contributions in a regular grid structure. This is then continuously being refreshed by re-shooting only a fraction of the total amount of photons in each frame. To maintain its temporal coherence and low variance, a low-resolution grid is used, and is then upsampled to the density field resolution in each frame. We also present a technique to store and reconstruct the angular illumination information by exploiting properties of the standard Henyey-Greenstein phase function, namely its ability to express anisotropic angular distributions with a single dominating direction.
The presented method is physically-plausible, conceptually simple and comparatively easy to implement. Moreover, it operates only on the cloud density field, thus not requiring any precomputation, and handles all light sources typical for the given environment, i.e. where one of the light sources dominates.
URL for the Abstract:
http://www.oskee.wz.cz/stranka/oskee.php?id=1223749027#Elek2012
Copyright Message:
Graphics Interface Conference 2012 28-30 May, Toronto, Ontario, Canada
Copyright held by authors. Permission granted to CHCCS/SCDHM to publish in print form, and ACM to publish electronically.
Download
Access Level:
Public

Correlation
MPG Unit:
Max-Planck-Institut für Informatik
MPG Subunit:
Computer Graphics Group
MPG Subsubunit:
Rendering Sub-Group
Research Context:
physically-based rendering, real-time rendering, GPU
Audience:
experts only
Appearance:
MPII WWW Server, MPII FTP Server, MPG publications list, university publications list, working group publication list, Fachbeirat, VG Wort



BibTeX Entry:

@INPROCEEDINGS{Elek2012a,
AUTHOR = {Elek, Oskar and Ritschel, Tobias and Wilkie, Alexander and Seidel, Hans-Peter},
EDITOR = {Brooks, Stephen and Hawkey, Kirstie},
TITLE = {Interactive cloud rendering using temporally-coherent photon mapping},
BOOKTITLE = {Proceedings of Graphics Interface 2012},
PUBLISHER = {Canadian Information Processing Society},
YEAR = {2012},
ORGANIZATION = {Canadian Information Processing Society},
PAGES = {141--148},
SERIES = {Graphics Interface 2012},
ADDRESS = {Toronto, Canada},
MONTH = {May},
}


Entry last modified by Oskar Elek, 01/30/2013
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Editor(s)
Oskar Elek
Created
01/11/2013 07:48:06 PM
Revision
1.
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Editor
Oskar Elek
Oskar Elek


Edit Date
01/30/2013 01:18:01 PM
01/11/2013 07:48:06 PM