A frequency Analysis of Light Transport, from Theory to Implementation


Speciality : Mathématiques et Informatique

30/10/2012 - 14:00 Mr Laurent Belcour (Université de Grenoble) Grand Amphi de l'INRIA Rhône-Alpes, Montbonnot

Keywords :
  • Fourier Analysis
  • Global Illumination
This thesis presents an improvement over the frequency analysis of local light-fields introduced by Durand et al. in 2005. We add into this analysis of light transport operations such as rough refractions, motion effects and participating media effects. We further improve the analysis by updating previously proposed operations to handle non-planar occlusions of light, anisotropic BRDFs and multiple lenses. We present the covariance analysis of light transport, a method to estimate the covariance matrix of a local light-field from the set of operations it undergoes. We show the use of such tool with various applications ranging from motion blur and depth-of-field adaptive sampling and filtering, photon mapping kernel size estimation and adaptive sampling of volumetric effects.


  • Mr Cyril Soler (Chargé de Recherche - INRIA )
  • Mr Nicolas Holzschuch (Directeur de Recherche - INRIA )


  • Mr Matthias Zwicker
  • Mr Mathias Paulin


  • Mr Wojciech Jarosz
  • Mme Valérie Perrier (Professeur - Grenoble INP )