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Visually-Uniform Reparametrization of Material Appearance through Density Redistribution

Pascal Barla 1 Laurent Belcour 2 Romain Pacanowski 1
1 MANAO - Melting the frontiers between Light, Shape and Matter
LaBRI - Laboratoire Bordelais de Recherche en Informatique, Inria Bordeaux - Sud-Ouest, LP2N - Laboratoire Photonique, Numérique et Nanosciences
Abstract : Variations of material parameters such as roughness, sheen, etc. do not usually produce visually-uniform changes in rendered images. This might make it detrimental to artistic edition or prefiltering. In this work, we provide a methodology to reparametrize non visuallyuniform parameters, by uniformly distributing the visual changes across the range of parameter values. For 1D and 2D parameters, our solution boils down to inverting a Cumulative Distribution Function. We provide three concrete applications of this method to reparametrize the complex refractive index, roughness and sheen.
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https://hal.inria.fr/hal-03367475
Contributor : Pascal Barla Connect in order to contact the contributor
Submitted on : Tuesday, October 12, 2021 - 11:17:03 AM
Last modification on : Wednesday, October 13, 2021 - 3:35:49 AM

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RR-9424.pdf
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  • HAL Id : hal-03367475, version 2

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Pascal Barla, Laurent Belcour, Romain Pacanowski. Visually-Uniform Reparametrization of Material Appearance through Density Redistribution. [Research Report] RR-9424, Inria Bordeaux - Sud Ouest; Unity Technologies. 2021. ⟨hal-03367475v2⟩

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