Real-time homogenous translucent material editing

This paper presents a novel method for real‐time homogenous translucent material editing under fixed illumination. We consider the complete analytic BSSRDF model proposed by Jensen et al. [JMLH01], including both multiple scattering and single scattering. Our method allows the user to adjust the ana...

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Vydáno v:Computer graphics forum Ročník 26; číslo 3; s. 545 - 552
Hlavní autoři: Xu, Kun, Gao, Yue, Li, Yong, Ju, Tao, Hu, Shi-Min
Médium: Journal Article
Jazyk:angličtina
Vydáno: Oxford, UK Blackwell Publishing Ltd 01.09.2007
Témata:
and texture
Computer graphics
Editing
I.3.3 [Computer Graphics]: Display algorithms
I.3.7 [Computer Graphics]: Color
I.3.7 [Computer Graphics]: Color, shading, shadowing, and texture
Real time
shading
shadowing
Studies
ISSN:0167-7055, 1467-8659
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Shrnutí:This paper presents a novel method for real‐time homogenous translucent material editing under fixed illumination. We consider the complete analytic BSSRDF model proposed by Jensen et al. [JMLH01], including both multiple scattering and single scattering. Our method allows the user to adjust the analytic parameters of BSSRDF and provides high‐quality, real‐time rendering feedback. Inspired by recently developed Precomputed Radiance Transfer (PRT) techniques, we approximate both the multiple scattering diffuse reflectance function and the single scattering exponential attenuation function in the analytic model using basis functions, so that re‐computing the outgoing radiance at each vertex as parameters change reduces to simple dot products. In addition, using a non‐uniform piecewise polynomial basis, we are able to achieve smaller approximation error than using bases adopted in previous PRT‐based works, such as spherical harmonics and wavelets. Using hardware acceleration, we demonstrate that our system generates images comparable to [JMLH01]at real‐time frame‐rates.
Bibliografie:istex:4D251D9F7D211B57D7913EB7824C188F45F0D405
ark:/67375/WNG-VTGLCWS4-H
ArticleID:CGF1077
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ISSN:0167-7055
1467-8659
DOI:10.1111/j.1467-8659.2007.01077.x