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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 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/11858/00-001M-0000-000F-268B-4
Genre: Conference Paper

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 Creators:
Havran, Vlastimil1, Author           
Herzog, Robert1, 2, Author           
Seidel, Hans-Peter1, Author           
Alexa, Marc3, Editor
Marks, Joe3, Editor
Affiliations:
1Computer Graphics, MPI for Informatics, Max Planck Society, ou_40047              
2International Max Planck Research School, MPI for Informatics, Max Planck Society, ou_1116551              
3Max Planck Society, ou_persistent13              

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 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: Oxford, UK : Blackwell
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 279019
Other: Local-ID: C125675300671F7B-0EECF60691827774C12570B3004AE164-Havran2005eg05
 Degree: -

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Title: Untitled Event
Place of Event: Dublin, Ireland
Start-/End Date: 2005-08-29

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Title: The European Association for Computer Graphics 26th Annual Conference : EUROGRAPHICS 2005
Source Genre: Proceedings
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Publ. Info: Oxford, UK : Blackwell
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 323 - 333 Identifier: -

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Title: Computer Graphics Forum
Source Genre: Series
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Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 0167-7055