A Physically-Based Reflectance Model Combining Reflection and Diffraction - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Rapport (Rapport De Recherche) Année : 2016

A Physically-Based Reflectance Model Combining Reflection and Diffraction

Résumé

Reflectance properties express how objects in a virtual scene interact with light; they control the appearance of the object: whether it looks shiny or not, whether it has a metallic or plastic appearance. Having a good reflectance model is essential for the production of photo-realistic pictures. Measured reflectance functions provide high realism at the expense of memory cost. Parametric models are compact, but finding the right parameters to approximate measured reflectance can be difficult. Most parametric models use a model of the surface micro-geometry to predict the reflectance at the macroscopic level. In this paper, we show that this micro-geometry causes two different physical phenomena: reflection and diffraction. Their relative importance is connected to the surface roughness. Taking both phenomena into account, we develop a new reflectance model that is compact, based on physical properties and provides a good approximation of measured reflectance.
Fichier principal
Vignette du fichier
RR-8964.pdf (13.01 Mo) Télécharger le fichier
supplement_rr_20_oct.pdf (254.57 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01386157 , version 1 (07-11-2016)

Identifiants

  • HAL Id : hal-01386157 , version 1

Citer

Nicolas Holzschuch, Romain Pacanowski. A Physically-Based Reflectance Model Combining Reflection and Diffraction. [Research Report] RR-8964, INRIA. 2016. ⟨hal-01386157⟩
1433 Consultations
1467 Téléchargements

Partager

Gmail Facebook X LinkedIn More