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  Perceptually Guided Corrective Splatting

Haber, J., Myszkowski, K., Yamauchi, H., & Seidel, H.-P. (2001). Perceptually Guided Corrective Splatting. In A. Chalmers, & T.-M. Rhyne (Eds.), The European Association for Computer Graphics 22th Annual Conference: EUROGRAPHICS 2001 (pp. C142-C152). Oxford, UK: Blackwell.

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 Urheber:
Haber, Jörg1, Autor           
Myszkowski, Karol1, Autor           
Yamauchi, Hitoshi1, Autor           
Seidel, Hans-Peter1, Autor           
Affiliations:
1Computer Graphics, MPI for Informatics, Max Planck Society, ou_40047              

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 Zusammenfassung: One of the basic difficulties with interactive walkthroughs is the high quality rendering of object surfaces with non-diffuse light scattering characteristics. Since full ray tracing at interactive rates is usually impossible, we render a precomputed global illumination solution using graphics hardware and use remaining computational power to correct the appearance of non-diffuse objects on-the-fly. The question arises, how to obtain the best image quality as perceived by a human observer within a limited amount of time for each frame. We address this problem by enforcing corrective computation for those non-diffuse objects that are selected using a computational model of visual attention. We consider both the saliency- and task-driven selection of those objects and benefit from the fact that shading artifacts of ``unattended'' objects are likely to remain unnoticed. We use a hierarchical image-space sampling scheme to control ray tracing and splat the generated point samples. The resulting image converges progressively to a ray traced solution if the viewing parameters remain unchanged. Moreover, we use a sample cache to enhance visual appearance if the time budget for correction has been too low for some frame. We check the validity of the cached samples using a novel criterion suited for non-diffuse surfaces and reproject valid samples into the current view.

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Sprache(n): eng - English
 Datum: 2010-03-122001
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: Oxford, UK : Blackwell
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: eDoc: 520198
Anderer: Local-ID: C125675300671F7B-3992DB8541113439C1256A72003B9C5A-Haber:2001:PGCS
 Art des Abschluß: -

Veranstaltung

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Titel: Untitled Event
Veranstaltungsort: Manchester, UK
Start-/Enddatum: 2003-01-01 - 2003-01-01

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Titel: The European Association for Computer Graphics 22th Annual Conference: EUROGRAPHICS 2001
Genre der Quelle: Konferenzband
 Urheber:
Chalmers, Alan, Herausgeber
Rhyne, Theresa-Marie, Herausgeber
Affiliations:
-
Ort, Verlag, Ausgabe: Oxford, UK : Blackwell
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: C142 - C152 Identifikator: -

Quelle 2

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Titel: Computer Graphics Forum
Genre der Quelle: Reihe
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Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: - Identifikator: ISSN: 0167-7055