Analysis of a Physically Realistic Film Grain Model, and a Gaussian Film Grain Synthesis Algorithm

Abstract : Film grain is a highly valued characteristic of analog images, thus realistic digital film grain synthesis is an important objective for many modern photographers and film-makers. We carry out a theoretical analysis of a physically realistic film grain model, based on a Boolean model, and derive expressions for the expected value and covariance of the film grain texture. We approximate these quantities using a Monte Carlo simulation, and use them to propose a film grain synthesis algorithm based on Gaussian textures. With numerical and visual experiments, we demonstrate the correctness and subjective qualities of the proposed algorithm
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Pré-publication, Document de travail
2017
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https://hal.archives-ouvertes.fr/hal-01494123
Contributeur : Alasdair Newson <>
Soumis le : mercredi 22 mars 2017 - 17:14:28
Dernière modification le : dimanche 26 mars 2017 - 01:06:25

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  • HAL Id : hal-01494123, version 1

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Alasdair Newson, Noura Faraj, Julie Delon, Bruno Galerne. Analysis of a Physically Realistic Film Grain Model, and a Gaussian Film Grain Synthesis Algorithm. 2017. <hal-01494123>

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