Per citar aquest document: http://ddd.uab.cat/record/52555
Restoration of Videos Degraded by Local Isoplanatism Effects in the Near-Infrared Domain
Lemaitre, Magali (Universite de Bourgogne. Le2i Laboratory (Le Creusot, França))
Laligant, Olivier (Universite de Bourgogne. Le2i Laboratory (Le Creusot, França))
Blanc-Talon, Jacques (CEP, DGA (Arcueil, França))
Mériaudeau, Fabrice (Universite de Bourgogne. Le2i Laboratory (Le Creusot, França))

Data: 2008
Resum: When observing a scene horizontally at a long distance in the near-infrared domain, degradations due to atmospheric turbulence often occur. In our previous work, we presented two hybrid methods to restore videos degraded by such local perturbations. These restoration algorithms take advantages of a space-time Wiener filter and a space-time regularization by the Laplacian operator. Wiener and Laplacian regularization results are mixed differently depending on the distance between the current pixel and the nearest edge point. It was shown that a gradation between Wiener and Laplacian areas improves results quality, so that only the algorithm using a gradation will be used in this article. In spite of a significant improvement in the obtained images quality, our restoration results greatly depend on the segmentation image used in the video processing. We then propose a method to select automatically the best segmentation image.
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. Creative Commons
Llengua: Anglès.
Document: article ; recerca ; publishedVersion
Matèria: Atmospheric turbulence ; Local degradation ; Automatic segmentation ; Adaptive restoration
Publicat a: ELCVIA : Electronic Letters on Computer Vision and Image Analysis, V. 7 n. 3 (2008) p. 83-92, ISSN 1577-5097

Adreça alternativa: http://www.raco.cat/index.php/ELCVIA/article/view/150401


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 Registre creat el 2010-01-15, darrera modificació el 2016-06-11



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