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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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Contributor : Alasdair Newson Connect in order to contact the contributor
Submitted on : Wednesday, May 10, 2017 - 10:56:26 AM
Last modification on : Tuesday, December 8, 2020 - 9:51:01 AM
Long-term archiving on: : Friday, August 11, 2017 - 12:40:40 PM

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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. 6th Conference on Scale Space and Variational Methods in Computer Vision SSVM 2017, Jun 2017, Kolding, Denmark. ⟨hal-01494123v2⟩

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