Realistic Film Grain Rendering - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Image Processing On Line Année : 2016

Realistic Film Grain Rendering

Alasdair Newson
Noura Faraj
  • Fonction : Auteur
Bruno Galerne
  • Fonction : Auteur
  • PersonId : 924934
Julie Delon

Résumé

Film grain is the unique texture which results from the silver halide based analog photographic process. Film emulsions are made up of microscopic photo-sensitive silver grains, and the fluctuating density of these grains leads to what is known as film grain. This texture is valued by photographers and film directors for its artistic value. We present two implementations of a film grain rendering algorithm based on a physically realistic film grain model. The rendering algorithm uses a Monte Carlo simulation to determine the value of each output rendered pixel. A significant advantage of using this model is that the images can be rendered at any resolution, so that arbitrary zoom factors are possible, even to the point where the individual grains can be observed. We provide a method to choose the best implementation automatically, with respect to execution time. The C++ code for this work is available, as well as an online demo http://dev.ipol.im/~nfaraj/ipol_demo/film_grain/.
Fichier non déposé

Dates et versions

hal-01536631 , version 1 (12-06-2017)

Identifiants

  • HAL Id : hal-01536631 , version 1

Citer

Alasdair Newson, Noura Faraj, Bruno Galerne, Julie Delon. Realistic Film Grain Rendering. Image Processing On Line, 2016. ⟨hal-01536631⟩
100 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More