Estimating Specular Roughness and Anisotropy from Second Order Spherical Gradient Illumination

This paper presents a novel method for estimating specular roughness and tangent vectors, per surface point, from polarized second order spherical gradient illumination patterns. We demonstrate that for isotropic BRDFs, only three second order spherical gradients are sufficient to robustly estimate...

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Vydané v:	Computer graphics forum Ročník 28; číslo 4; s. 1161 - 1170
Hlavní autori:	Ghosh, Abhijeet, Chen, Tongbo, Peers, Pieter, Wilson, Cyrus A., Debevec, Paul
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Oxford, UK Blackwell Publishing Ltd 01.06.2009
Predmet:	Computer graphics Computer Graphics [I.3.7]: Three-Dimensional Graphics and Realism Computer science Estimating techniques Light Optimization
ISSN:	0167-7055, 1467-8659
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