Imperial College London
Alternate

ProfessorAbhijeetGhosh

Faculty of Engineering, Department of Computing

Professor of Graphics and Imaging
 
 
 
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Contact

 

+44 (0)20 7594 8351abhijeet.ghosh Website

 
 
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Location

 

376Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ghosh:2009:10.1111/j.1467-8659.2009.01493.x,
author = {Ghosh, A and Chen, T and Peers, P and Wilson, CA and Debevec, P},
doi = {10.1111/j.1467-8659.2009.01493.x},
journal = {Computer Graphics Forum},
pages = {1161--1170},
title = {Estimating Specular Roughness and Anisotropy from Second Order Spherical Gradient Illumination},
url = {http://dx.doi.org/10.1111/j.1467-8659.2009.01493.x},
volume = {28},
year = {2009}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - <jats:title>Abstract</jats:title><jats:p>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 spatially varying specular roughness. For anisotropic BRDFs, an additional two measurements yield specular roughness and tangent vectors per surface point. We verify our approach with different illumination configurations which project both discrete and continuous fields of gradient illumination. Our technique provides a direct estimate of the perpixel specular roughness and thus does not require offline numerical optimization that is typical for the measureandfit approach to classical BRDF modeling.</jats:p>
AU  - Ghosh,A
AU  - Chen,T
AU  - Peers,P
AU  - Wilson,CA
AU  - Debevec,P
DO  - 10.1111/j.1467-8659.2009.01493.x
EP  - 1170
PY  - 2009///
SN  - 0167-7055
SP  - 1161
TI  - Estimating Specular Roughness and Anisotropy from Second Order Spherical Gradient Illumination
T2  - Computer Graphics Forum
UR  - http://dx.doi.org/10.1111/j.1467-8659.2009.01493.x
VL  - 28
ER  -
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