A FAST INTERPOLATION METHOD TO REPRESENT THE BRDF IN GLOBAL ILLUMINATION

Pierre Y. Chatelier, Rémy Malgouyres

Abstract

Global illumination that simulates realistic lighting environments makes use of bidirectional reflectance distribution functions (BRDF). Such a function is a surface property, describing how light is re-emitted after hitting this surface. The present paper details a representation of BRDF and radiance distributions, based on control points, that aims at performance. It uses spherical triangles for interpolation, least square mean or linear programming for optimal representation, and very fast rotation by precomputing control points reweightening. It has some more advantages for deforming an existing shape. This approach is compared to Spherical Harmonics, and outperforms this last one.

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Paper Citation


in Harvard Style

Y. Chatelier P. and Malgouyres R. (2007). A FAST INTERPOLATION METHOD TO REPRESENT THE BRDF IN GLOBAL ILLUMINATION . In Proceedings of the Second International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, ISBN 978-972-8865-71-9, pages 5-12. DOI: 10.5220/0002072100050012


in Bibtex Style

@conference{grapp07,
author={Pierre Y. Chatelier and Rémy Malgouyres},
title={A FAST INTERPOLATION METHOD TO REPRESENT THE BRDF IN GLOBAL ILLUMINATION},
booktitle={Proceedings of the Second International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP,},
year={2007},
pages={5-12},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002072100050012},
isbn={978-972-8865-71-9},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Second International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP,
TI - A FAST INTERPOLATION METHOD TO REPRESENT THE BRDF IN GLOBAL ILLUMINATION
SN - 978-972-8865-71-9
AU - Y. Chatelier P.
AU - Malgouyres R.
PY - 2007
SP - 5
EP - 12
DO - 10.5220/0002072100050012