Multi-Scale Rendering of Scratched Materials using a Structured SV-BRDF Model
RAYMOND, Boris
Université de Bordeaux [UB]
Melting the frontiers between Light, Shape and Matter [MANAO]
Université de Bordeaux [UB]
Melting the frontiers between Light, Shape and Matter [MANAO]
RAYMOND, Boris
Université de Bordeaux [UB]
Melting the frontiers between Light, Shape and Matter [MANAO]
< Reduce
Université de Bordeaux [UB]
Melting the frontiers between Light, Shape and Matter [MANAO]
Language
en
Article de revue
This item was published in
ACM Transactions on Graphics. 2016-07-26
Association for Computing Machinery
English Abstract
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 ...Read more >
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.Read less <
English Keywords
Anisotropic BRDF
real-time rendering
multi-scale
European Project
Perceptual Representation of Illumination, Shape and Material
ANR Project
Représentation et manipulation de formes extrement détaillées - ANR-14-CE24-0004
Origin
Hal imported