Franke, Tobias ; Fellner, Dieter W. (2012)
A Scalable Framework for Image-based Material Representations.
Proceedings Web3D 2012.
doi: 10.1145/2338714.2338727
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
Complex material-light interaction is modeled mathematically in its most basic form through the 4D BRDF or the 6D spatially varying BRDF. To alleviate the overhead of calculating correct shading with a complex BRDF consisting of many parameters, many methods resort to textures as containers for BRDF information. The most common among them is the Bidirectional Texture Function, where a set of base textures of the material under different illumination and viewing conditions is stored and used as a lookup table at runtime. A wide variety of compression algorithms have been proposed, which usually differ only in some basis notation. Also, several other schemes aside from the BTF exist that make use of multiple textures as containers for surface appearance data, which either compress the surface transfer function or the response in change of luminance with a suitable basis function. We propose a common container for image-based material descriptors, the ImageMaterial node for X3D, with a common interface to unify these different implementations and make them accessible to the X3D developer. We also introduce a new texturing node, the PolynomialTextureMap, which can display Polynomial Texture Map binary container as regular static texture or work in conjunction with an ImageMaterial appearance to unfold its full potential.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Franke, Tobias ; Fellner, Dieter W. |
| Art des Eintrags: | Bibliographie |
| Titel: | A Scalable Framework for Image-based Material Representations |
| Sprache: | Englisch |
| Publikationsjahr: | 2012 |
| Verlag: | ACM Press, New York |
| Veranstaltungstitel: | Proceedings Web3D 2012 |
| DOI: | 10.1145/2338714.2338727 |
| Kurzbeschreibung (Abstract): | Complex material-light interaction is modeled mathematically in its most basic form through the 4D BRDF or the 6D spatially varying BRDF. To alleviate the overhead of calculating correct shading with a complex BRDF consisting of many parameters, many methods resort to textures as containers for BRDF information. The most common among them is the Bidirectional Texture Function, where a set of base textures of the material under different illumination and viewing conditions is stored and used as a lookup table at runtime. A wide variety of compression algorithms have been proposed, which usually differ only in some basis notation. Also, several other schemes aside from the BTF exist that make use of multiple textures as containers for surface appearance data, which either compress the surface transfer function or the response in change of luminance with a suitable basis function. We propose a common container for image-based material descriptors, the ImageMaterial node for X3D, with a common interface to unify these different implementations and make them accessible to the X3D developer. We also introduce a new texturing node, the PolynomialTextureMap, which can display Polynomial Texture Map binary container as regular static texture or work in conjunction with an ImageMaterial appearance to unfold its full potential. |
| Freie Schlagworte: | Business Field: Virtual engineering, Research Area: Generalized digital documents, Forschungsgruppe Semantic Models, Immersive Systems (SMIS), Extensible 3D (X3D), Texturing, Bidirectional Reflection Distribution Functions (BRDF), Precomputed Radiance Transfer (PRT) |
| Fachbereich(e)/-gebiet(e): | 20 Fachbereich Informatik 20 Fachbereich Informatik > Graphisch-Interaktive Systeme |
| Hinterlegungsdatum: | 12 Nov 2018 11:16 |
| Letzte Änderung: | 04 Feb 2022 12:40 |
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