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  Global Illumination using Photon Ray Splatting

Herzog, R., Havran, V., Kinuwaki, S., Myszkowski, K., & Seidel, H.-P. (2007). Global Illumination using Photon Ray Splatting. In D. Cohen-Or, & P. Slavik (Eds.), Eurographics 2007 (pp. 503-513). Oxford, UK: Blackwell.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-1F5A-F Version Permalink: https://hdl.handle.net/21.11116/0000-000F-5206-E
Genre: Conference Paper

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 Creators:
Herzog, Robert1, 2, Author           
Havran, Vlastimil1, Author           
Kinuwaki, Shinichi1, Author           
Myszkowski, Karol1, Author                 
Seidel, Hans-Peter1, Author                 
Affiliations:
1Computer Graphics, MPI for Informatics, Max Planck Society, ou_40047              
2International Max Planck Research School, MPI for Informatics, Max Planck Society, ou_1116551              

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Free keywords: -
 Abstract: We present a novel framework for efficiently computing the indirect
illumination in diffuse and moderately glossy
scenes using density estimation techniques. Many existing global illumination
approaches either quickly compute
an overly approximate solution or perform an orders of magnitude slower
computation to obtain high-quality
results for the indirect illumination. The proposed method improves photon
density estimation and leads to significantly
better visual quality in particular for complex geometry, while only slightly
increasing the computation
time. We perform direct splatting of photon rays, which allows us to use
simpler search data structures. Since our
density estimation is carried out in ray space rather than on surfaces, as in
the commonly used photon mapping algorithm,
the results are more robust against geometrically incurred sources of bias.
This holds also in combination
with final gathering where photon mapping often overestimates the illumination
near concave geometric features.
In addition, we show that our photon splatting technique can be extended to
handle moderately glossy surfaces
and can be combined with traditional irradiance caching for sparse sampling and
filtering in image space.

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Language(s): eng - English
 Dates: 2008-02-282007
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 356513
Other: Local-ID: C12573CC004A8E26-922F7B2EB5B8D78CC12573C4004C5B93-HerzogEG2007
BibTex Citekey: Herzog-et-al_Eurographics07
DOI: 10.1111/j.1467-8659.2007.01073.x
 Degree: -

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Title: Eurographics 2007
Place of Event: Prague, Czech Republic
Start-/End Date: 2007-09-03 - 2007-09-07

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Source 1

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Title: Eurographics 2007
Source Genre: Proceedings
 Creator(s):
Cohen-Or, Daniel1, Editor
Slavik, Pavel1, Editor
Affiliations:
1 External Organizations, ou_persistent22            
Publ. Info: Oxford, UK : Blackwell
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 503 - 513 Identifier: -

Source 2

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Title: Computer Graphics Forum
  Other : Computer Graphics Forum : journal of the European Association for Computer Graphics
  Abbreviation : Comput. Graph. Forum
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Blackwell-Wiley
Pages: - Volume / Issue: 26 (3) Sequence Number: - Start / End Page: - Identifier: ISSN: 0167-7055
CoNE: https://pure.mpg.de/cone/journals/resource/954925483671