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Restoration of SAR images using recovery of discontinuities and non-linear optimization

  • Ecole Nationale Supérieure des Télécoms

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Résumé

In this paper, we study the behaviour of contour recovery when filtering radar images. We start from recent methods lying on an equivalence scheme between implicit and explicit boundary processes in image restoration [1, 2]. Here we extend them to the processing of synthetic aperture radar (SAR) images. First we set up a general bayesian frame enabling recovery of discontinuities in such restoration methods. Then we exhibit an extension of the Geman-Reynolds-Charbonnier theorem allowing convenient filtering of SAR images. Due to the high dynamics of radar ERS-1 images, a deterministic algorithm is proposed integrating different statistical hypotheses for observation and regularization parts. Besides, we use a well-adapted SAR edge detector instead of the usual gradient in the boundary estimation step of an iterative boundary/ intensity restoration algorithm. Intensities are then estimated with a deterministic non-linear method. Finally, the particular behaviour or radar statistics (X law) lead us to define a new potential function adapted to speckle regularization while respecting region discontinuities.

langue originaleAnglais
titreEnergy Minimization Methods in Computer Vision and Pattern Recognition - International Workshop EMMCVPR 1997, Proceedings
rédacteurs en chefEdwin R. Hancock, Marcello Pelillo
EditeurSpringer Verlag
Pages67-82
Nombre de pages16
ISBN (imprimé)3540629092, 9783540629092
Les DOIs
étatPublié - 1 janv. 1997
Modification externeOui
EvénementInternational Workshop on Energy Minimization Methods in Computer Vision and Pattern Recognition, EMMCVPR 1997 - Venice, Italie
Durée: 21 mai 199723 mai 1997

Série de publications

NomLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume1223
ISSN (imprimé)0302-9743
ISSN (Electronique)1611-3349

Une conférence

Une conférenceInternational Workshop on Energy Minimization Methods in Computer Vision and Pattern Recognition, EMMCVPR 1997
Pays/TerritoireItalie
La villeVenice
période21/05/9723/05/97

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