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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Veröffentlicht in:	Computer graphics forum Jg. 28; H. 4; S. 1161 - 1170
Hauptverfasser:	Ghosh, Abhijeet, Chen, Tongbo, Peers, Pieter, Wilson, Cyrus A., Debevec, Paul
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Oxford, UK Blackwell Publishing Ltd 01.06.2009
Schlagworte:	Computer graphics Computer Graphics [I.3.7]: Three-Dimensional Graphics and Realism Computer science Estimating techniques Light Optimization
ISSN:	0167-7055, 1467-8659
Online-Zugang:	Volltext
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