A Physically-Based BSDF for Modeling the Appearance of Paper

We present a novel appearance model for paper. Based on our appearance measurements for matte and glossy paper, we find that paper exhibits a combination of subsurface scattering, specular reflection, retroreflection, and surface sheen. Classic microfacet and simple diffuse reflection models cannot...

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Vydáno v:	Computer graphics forum Ročník 33; číslo 4; s. 133 - 142
Hlavní autoři:	Papas, Marios, de Mesa, Krystle, Jensen, Henrik Wann
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Oxford Blackwell Publishing Ltd 01.07.2014
Témata:	Analysis and texture Categories and Subject Descriptors (according to ACM CCS) Computer based modeling Computer graphics Diffusion layers I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism-Color I.3.7 [Computer Graphics]: Three‐Dimensional Graphics and Realism—Color, shading, shadowing, and texture Mathematical models Multimedia computer applications Reflection Rendering Roughness Scattering shading shadowing Studies Surface chemistry
ISSN:	0167-7055, 1467-8659
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Shrnutí:	We present a novel appearance model for paper. Based on our appearance measurements for matte and glossy paper, we find that paper exhibits a combination of subsurface scattering, specular reflection, retroreflection, and surface sheen. Classic microfacet and simple diffuse reflection models cannot simulate the double‐sided appearance of a thin layer. Our novel BSDF model matches our measurements for paper and accounts for both reflection and transmission properties. At the core of the BSDF model is a method for converting a multi‐layer subsurface scattering model (BSSRDF) into a BSDF, which allows us to retain physically‐based absorption and scattering parameters obtained from the measurements. We also introduce a method for computing the amount of light available for subsurface scattering due to transmission through a rough dielectric surface. Our final model accounts for multiple scattering, single scattering, and surface reflection and is capable of rendering paper with varying levels of roughness and glossiness on both sides.
Bibliografie:	ArticleID:CGF12420 ark:/67375/WNG-5V5LF301-9 istex:BC13047F4DEB3C2F10076D0F458C69C3098164AD Supporting Information SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-2 content type line 23
ISSN:	0167-7055 1467-8659
DOI:	10.1111/cgf.12420