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Author, Editor(s)

Author(s):

Liu, Xinguo
Dong, Zhao
Bao, Hujun
Peng, Qunsheng

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Not MPG Author(s):

Liu, Xinguo
Bao, Hujun
Peng, Qunsheng

BibTeX cite key*:

LDB2008

Title

Title*:

Caustic spot light for rendering caustics

Journal

Journal Title*:

The Visual Computer

Journal's URL:

http://www.springerlink.com/content/100388/?p=d9c94e4d89b547d7b70ef9960e820c32&pi=0

Download URL
for the article:

http://www.springerlink.com/content/8p53062g3v0j5074/fulltext.pdf

Language:

English

Publisher

Publisher's
Name:

Springer Berlin / Heidelberg

Publisher's URL:

http://www.springerlink.com/home/main.mpx

Publisher's
Address:

Heidelberg

ISSN:

0178-2789

Vol, No, pp, Date

Volume*:

24

Number:

7-9

Publishing Date:

July 2008

Pages*:

485-494

Number of
VG Pages:


Page Start:

485

Page End:

494

Sequence Number:


DOI:

10.1007/s00371-008-0229-9

Note, Abstract, ©

Note:


(LaTeX) Abstract:

It is difficult to render caustic patterns at interactive frame rates. This paper introduces new rendering techniques that relax
current constraints, allowing scenes with moving, non-rigid scene
objects, rigid caustic objects, and rotating directional light
sources to be rendered in real-time with GPU hardware
acceleration. Because our algorithm estimates the intensity and
the direction of caustic light, rendering of non-Lambertian
surfaces is supported. Previous caustics algorithms have
separated the problem into pre-rendering and rendering phases,
storing intermediate results in data structures such as photon
maps or radiance transfer functions. Our central idea is to use
specially parameterized spot lights, called caustic spot lights
(CSLs), as the intermediate representation of a twophase
algorithm. CSLs are flexible enough that a small number can
approximate the light leaving a caustic object, yet simple enough
that they can be efficiently evaluated by a pixel shader program
during accelerated rendering.We extend our approach to support
changing lighting direction by further dividing the pre-rendering
phase into per-scene and per-frame components: the per-frame
phase computes frame-specific CSLs by interpolating between CSLs
that were pre-computed with differing light directions.

URL for the Abstract:

http://www.springerlink.com/content/8p53062g3v0j5074/

Categories,
Keywords:

Image synthesis - Display algorithm - Caustic - Spot light

HyperLinks / References / URLs:


Copyright Message:


Personal Comments:


Download
Access Level:

Public

Correlation

MPG Unit:

Max-Planck-Institut für Informatik



MPG Subunit:

Computer Graphics Group

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:

@ARTICLE{LDB2008,
AUTHOR = {Liu, Xinguo and Dong, Zhao and Bao, Hujun and Peng, Qunsheng},
TITLE = {Caustic spot light for rendering caustics},
JOURNAL = {The Visual Computer},
PUBLISHER = {Springer Berlin / Heidelberg},
YEAR = {2008},
NUMBER = {7-9},
VOLUME = {24},
PAGES = {485--494},
ADDRESS = {Heidelberg},
MONTH = {July},
ISBN = {0178-2789},
DOI = {10.1007/s00371-008-0229-9},
}


Entry last modified by Thomas Schultz, 03/20/2009
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Editor(s)
Zhao Dong
Created
07/15/2008 12:24:31 AM
Revision
1.
0.


Editor
Thomas Schultz
Zhao Dong


Edit Date
03/20/2009 06:33:04 PM
07/15/2008 12:24:31 AM


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