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

Herzog, R., Myszkowski, K., & Seidel, H.-P. (2009). Anisotropic Radiance-Cache Splatting for Efficiently Computing High-Quality Global Illumination with Lightcuts. In M. Stamminger, & P. Dutré (Eds.), Computer Graphics Forum (Proc. EUROGRAPHICS) (pp. 259-268). Oxford, UK: Wiley-Blackwell.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-1972-1 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-1973-0
Genre: Konferenzbeitrag

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 Urheber:
Herzog, Robert1, 2, Autor           
Myszkowski, Karol1, Autor           
Seidel, Hans-Peter1, Autor           
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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Schlagwörter: -
 Zusammenfassung: 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.

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Sprache(n): eng - English
 Datum: 2009-04-072009
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: Oxford, UK : Wiley-Blackwell
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: eDoc: 520500
Anderer: Local-ID: C125675300671F7B-56F88E3A387C52D6C12575550034E328-Herzog2008
 Art des Abschluß: -

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Titel: Untitled Event
Veranstaltungsort: München, Germany
Start-/Enddatum: 2009-03-30 - 2009-04-03

Entscheidung

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Titel: Computer Graphics Forum (Proc. EUROGRAPHICS)
Genre der Quelle: Konferenzband
 Urheber:
Stamminger, Marc1, Herausgeber           
Dutré, Philip, Herausgeber
Affiliations:
1 Computer Graphics, MPI for Informatics, Max Planck Society, ou_40047            
Ort, Verlag, Ausgabe: Oxford, UK : Wiley-Blackwell
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: 259 - 268 Identifikator: -