RAYMOND, Boris; GUENNEBAUD, Gael; BARLA, Pascal

doi:10.1145/2897824.2925945

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RAYMOND, Boris
Université de Bordeaux [UB]
Melting the frontiers between Light, Shape and Matter [MANAO]

GUENNEBAUD, Gael
Melting the frontiers between Light, Shape and Matter [MANAO]

BARLA, Pascal
Melting the frontiers between Light, Shape and Matter [MANAO]

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Article de revue

Ce document a été publié dans

ACM Transactions on Graphics. 2016-07-26

Association for Computing Machinery

Résumé en anglais

We introduce a Spatially-Varying BRDF model tailored to the multi-scale rendering of scratched materials such as metals, plastics or finished woods.Our approach takes advantage of the regular structure of scratch distributions to achieve high performance without compromising visual quality.We provide users with controls over the profile, micro-BRDF, density and orientation of scratches, while updating our material model at interactive rates.The BRDF for a single scratch is simulated using an optimized 2D ray-tracer and compactly stored in a three-component 2D texture.In contrast to existing models, our approach takes into account all inter-reflections inside a scratch, including Fresnel effects.At render time, the SV-BRDF for the scratch distribution under a pixel or ray footprint is obtained by linear combination of individual scratch BRDFs.We show how to evaluate it using both importance and light sampling, in direct and global illumination settings.< Réduire

Mots clés en anglais

Anisotropic BRDF

real-time rendering

multi-scale

URI

https://oskar-bordeaux.fr/handle/20.500.12278/181956

DOI

http://dx.doi.org/10.1145/2897824.2925945

Projet Européen

Perceptual Representation of Illumination, Shape and Material

Project ANR

Représentation et manipulation de formes extrement détaillées - ANR-14-CE24-0004

Origine

Importé de hal

Unités de recherche

Laboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298