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Analyse / synthèse de champs de tenseurs de structure : application à la synthèse d’images et de volumes texturés

Abstract : This work is a part of the texture synthesis context. Aiming to ensure a faithful reproduction of the patterns and variations of orientations of the input texture, a two-stage structure/texture synthesis algorithm is proposed. It consists of synthesizing the structure layer showing the geometry of the exemplar and represented by the structure tensor field in the first stage, and using the resulting tensor field to constrain the synthesis of the texture layer holding more local variations, in the second stage. An acceleration method based on the use of Gaussian pyramids and parallel computing is then developed.In order to demonstrate the ability of the proposed algorithm to faithfully reproduce the visual aspect of the considered textures, the method is tested on various texture samples and evaluated objectively using statistics of 1st and 2nd order of the intensity and orientation field. The obtained results are of better or equivalent quality than those obtained using the algorithms of the literature. A major advantage of the proposed approach is its capacity in successfully synthesizing textures in many situations where traditional algorithms fail to reproduce the large-scale patterns.The structure/texture synthesis approach is extended to color texture synthesis. 3D texture synthesis is then addressed and finally, an extension to the synthesis of specified form textures using an imposed texture is carried out, showing the capacity of the approach in generating textures of arbitrary forms while preserving the input texture characteristics.
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https://tel.archives-ouvertes.fr/tel-01298560
Contributor : Abes Star :  Contact
Submitted on : Wednesday, April 6, 2016 - 11:13:07 AM
Last modification on : Wednesday, January 31, 2018 - 5:02:11 AM

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AKL_ADIB_2016.pdf
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  • HAL Id : tel-01298560, version 1

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Adib Akl. Analyse / synthèse de champs de tenseurs de structure : application à la synthèse d’images et de volumes texturés. Synthèse d'image et réalité virtuelle [cs.GR]. Université de Bordeaux, 2016. Français. ⟨NNT : 2016BORD0009⟩. ⟨tel-01298560⟩

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