Enhanced compressed sensing recovery with level set normals.

Détails

ID Serval
serval:BIB_D5FEBB21714E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Enhanced compressed sensing recovery with level set normals.
Périodique
IEEE Transactions on Image Processing
Auteur⸱e⸱s
Estellers V., Thiran J.P., Bresson X.
ISSN
1941-0042 (Electronic)
ISSN-L
1057-7149
Statut éditorial
Publié
Date de publication
2013
Volume
22
Numéro
7
Pages
2611-2626
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't Publication Status: ppublish
Résumé
We propose a compressive sensing algorithm that exploits geometric properties of images to recover images of high quality from few measurements. The image reconstruction is done by iterating the two following steps: 1) estimation of normal vectors of the image level curves, and 2) reconstruction of an image fitting the normal vectors, the compressed sensing measurements, and the sparsity constraint. The proposed technique can naturally extend to nonlocal operators and graphs to exploit the repetitive nature of textured images to recover fine detail structures. In both cases, the problem is reduced to a series of convex minimization problems that can be efficiently solved with a combination of variable splitting and augmented Lagrangian methods, leading to fast and easy-to-code algorithms. Extended experiments show a clear improvement over related state-of-the-art algorithms in the quality of the reconstructed images and the robustness of the proposed method to noise, different kind of images, and reduced measurements.
Pubmed
Web of science
Création de la notice
16/12/2013 10:34
Dernière modification de la notice
20/08/2019 16:55
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