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Theses

Modèles de vision et synthèse d'images

Abstract : Photorealism in image synthesis usually needs a huge number of parameters and complex computations. It is successfull when an external observer is unable to see any difference between a photographic and a simulated picture. To achieve this goal, complex geometry, material surface and light-matter interaction simulations are needed.But there is an element that is often neglected in this simulation process : the visualisation environment. The simulated scene is viewed on a specific display, in a specific environment, by a human observer. Each one of these three components has specific caracteristics which could be exploited in image synthesis.Thus, we propose a perceptual image metric in order to perceptually compare two images by using a model which simulates the human vision process. We further integrate this metric into a progressive rendering algorithm, replacing the usual empiric parameters with perceptual ones. Computing times are then usually divided by two or three.
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https://tel.archives-ouvertes.fr/tel-00800330
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Submitted on : Wednesday, March 13, 2013 - 3:43:19 PM
Last modification on : Wednesday, June 24, 2020 - 4:18:27 PM
Long-term archiving on: : Monday, June 17, 2013 - 12:37:56 PM

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  • HAL Id : tel-00800330, version 1

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Jean-Philippe Farrugia. Modèles de vision et synthèse d'images. Synthèse d'image et réalité virtuelle [cs.GR]. Ecole Nationale Supérieure des Mines de Saint-Etienne; Université Jean Monnet - Saint-Etienne, 2002. Français. ⟨NNT : 2002EMSE0021⟩. ⟨tel-00800330⟩

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