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  Fast Final Gathering via Reverse Photon Mapping

Havran, V., Herzog, R., & Seidel, H.-P. (2005). Fast Final Gathering via Reverse Photon Mapping. In M. Alexa, & J. Marks (Eds.), The European Association for Computer Graphics 26th Annual Conference: EUROGRAPHICS 2005 (pp. 323-333). Oxford, UK: Blackwell.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-268A-6 Version Permalink: https://hdl.handle.net/21.11116/0000-000F-43A2-E
Genre: Conference Paper

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 Creators:
Havran, Vlastimil1, Author           
Herzog, Robert1, 2, 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 new algorithm for computing indirect illumination based on density
estimation similarly to photon mapping. We accelerate the search for final
gathering by reorganizing the computation in the reverse order. We use two
trees that organize spatially not only the position of photons but also the
position of final gather rays. The achieved speedup is algorithmic, the
performance improvement takes advantage of logarithmic complexity of searching
in trees. The algorithm requires almost no user settings unlike many known
acceleration techniques for photon mapping. The image quality is the same as
for traditional photon mapping with final gathering, since the algorithm does
not approximate or interpolate. Optionally, the algorithm can be combined with
other techniques such as density control and importance sampling. The algorithm
creates a coherent access pattern to the main memory. This further improves on
performance and also allows us to use efficient external data structures to
alleviate the increased memory requirements.

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Language(s): eng - English
 Dates: 2006-04-252005
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 279019
Other: Local-ID: C125675300671F7B-0EECF60691827774C12570B3004AE164-Havran2005eg05
BibTex Citekey: Havran-et-al_EUROGRAPHICS05
DOI: 10.1111/j.1467-8659.2005.00857.x
 Degree: -

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Title: The European Association for Computer Graphics 26th Annual Conference
Place of Event: Dublin, Ireland
Start-/End Date: 2005-08-29

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Source 1

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Title: The European Association for Computer Graphics 26th Annual Conference: EUROGRAPHICS 2005
Source Genre: Proceedings
 Creator(s):
Alexa, Marc1, Editor
Marks, Joe1, Editor
Affiliations:
1 External Organizations, ou_persistent22            
Publ. Info: Oxford, UK : Blackwell
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 323 - 333 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: 24 (3) Sequence Number: - Start / End Page: - Identifier: ISSN: 0167-7055
CoNE: https://pure.mpg.de/cone/journals/resource/954925483671