AN INVERSE PROBLEM APPROACH TO BRDF MODELING

Kei Iwasaki, Yoshinori Dobashi, Fujiichi Yoshimoto, Tomoyuki Nishita

Abstract

This paper presents a BRDF modeling method, based on an inverse problem approach. Our method calculates BRDFs to match the appearance of the object specified by the user. By representing BRDFs by a linear combination of basis functions, outgoing radiances of the object surface can be represented using basis functions. The calculation of the desired BRDF results from calculating the corresponding coefficients of basis functions that minimize the sum of differences between the outgoing radiances, represented using basis functions and user specified radiances. The properties that BRDFs must satisfy are described by linear constraint conditions. This minimization problem can be solved, interactively, using a linearly constrained least squares approach. Thus, our method allows the user to design BRDFs directly, under fixed complex lighting and viewpoint, and to view the rendering results interactively, under dynamic lighting and viewpoint.

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Paper Citation


in Harvard Style

Iwasaki K., Dobashi Y., Yoshimoto F. and Nishita T. (2009). AN INVERSE PROBLEM APPROACH TO BRDF MODELING . In Proceedings of the Fourth International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2009) ISBN 978-989-8111-67-8, pages 129-136. DOI: 10.5220/0001784601290136


in Bibtex Style

@conference{grapp09,
author={Kei Iwasaki and Yoshinori Dobashi and Fujiichi Yoshimoto and Tomoyuki Nishita},
title={AN INVERSE PROBLEM APPROACH TO BRDF MODELING},
booktitle={Proceedings of the Fourth International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2009)},
year={2009},
pages={129-136},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001784601290136},
isbn={978-989-8111-67-8},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Fourth International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2009)
TI - AN INVERSE PROBLEM APPROACH TO BRDF MODELING
SN - 978-989-8111-67-8
AU - Iwasaki K.
AU - Dobashi Y.
AU - Yoshimoto F.
AU - Nishita T.
PY - 2009
SP - 129
EP - 136
DO - 10.5220/0001784601290136