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Author, Editor(s)

Author(s):

Herzog, Robert
Myszkowski, Karol
Seidel, Hans-Peter

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BibTeX cite key*:

Herzog2008

Title

Title*:

Anisotropic Radiance-Cache Splatting for Efficiently Computing High-Quality Global Illumination with Lightcuts


herzogEG09.pdf (5888.91 KB)

Journal

Journal Title*:

Computer Graphics Forum (Proc. EUROGRAPHICS 2009)

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for the article:


Language:

English

Publisher

Publisher's
Name:

Blackwell

Publisher's URL:


Publisher's
Address:

Oxford

ISSN:


Vol, No, pp, Date

Volume*:

28

Number:

2

Publishing Date:

2009

Pages*:

259-268

Number of
VG Pages:


Page Start:

259

Page End:

268

Sequence Number:


DOI:


Note, Abstract, ©

Note:


(LaTeX) Abstract:

Computing global illumination in complex scenes is even with todays computational power a demanding task.
In this work we propose a novel irradiance caching scheme that combines the advantages of two state-of-the-art algorithms for high-quality global illumination rendering: \emph{lightcuts}, an adaptive and hierarchical instant-radiosity based algorithm and the widely used (ir)radiance caching algorithm for sparse sampling and interpolation of (ir)radiance in object space. Our adaptive radiance caching algorithm is based on anisotropic cache splatting, which adapts the cache footprints not only to the magnitude of the illumination gradient computed with lightcuts but also to its orientation allowing larger interpolation errors along the direction of coherent illumination while reducing the error along the illumination gradient. Since lightcuts computes the direct and indirect lighting seamlessly, we use a two-layer radiance cache, to store and control the interpolation of direct and indirect lighting individually with different error criteria. In multiple iterations our method detects cache interpolation errors above the visibility threshold of a pixel and reduces the anisotropic cache footprints accordingly.
We achieve significantly better image quality while also speeding up the computation costs by one to two orders of magnitude with respect to the well-known photon mapping with (ir)radiance caching procedure.

URL for the Abstract:


Categories,
Keywords:

Global Illumination, Rendering, Irradiance Caching

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Access Level:

Public

Correlation

MPG Unit:

Max-Planck-Institut für Informatik



MPG Subunit:

Computer Graphics Group

Audience:

popular

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BibTeX Entry:

@ARTICLE{Herzog2008,
AUTHOR = {Herzog, Robert and Myszkowski, Karol and Seidel, Hans-Peter},
EDITOR = {Dutr{\'e}, Philip and Stamminger, Marc},
TITLE = {Anisotropic Radiance-Cache Splatting for Efficiently Computing High-Quality Global Illumination with Lightcuts},
BOOKTITLE = {The European Association for Computer Graphics 30th Annual Conference : EUROGRAPHICS 2009},
JOURNAL = {Computer Graphics Forum (Proc. EUROGRAPHICS 2009)},
PUBLISHER = {Blackwell},
YEAR = {2009},
NUMBER = {2},
VOLUME = {28},
PAGES = {259--268},
SERIES = {Computer Graphics Forum},
ADDRESS = {M{\"u}nchen, Germany},
ISBN = {0167-7055},
}


Entry last modified by Karol Myszkowski, 10/07/2013
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Editor(s)
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Created
02/06/2009 10:37:40 AM
Revisions
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Editor(s)
Karol Myszkowski
Anja Becker
Anja Becker
Ellen Fries
Ellen Fries
Edit Dates
10/07/2013 06:47:29 PM
11.03.2011 10:21:44
18.03.2010 11:53:03
04/07/2009 01:00:26 PM
03/20/2009 06:21:38 PM
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