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research article

Enhanced Compressed Sensing Recovery with Level Set Normals

Estellers Casas, Virginia  
•
Thiran, Jean-Philippe  
•
Bresson, Xavier  
2013
IEEE Transactions on Image Processing

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 non local operators and graphs to exploit the repetitive nature of textured images in order 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.

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Type
research article
DOI
10.1109/Tip.2013.2253484
Web of Science ID

WOS:000321924600008

Author(s)
Estellers Casas, Virginia  
Thiran, Jean-Philippe  
Bresson, Xavier  
Date Issued

2013

Published in
IEEE Transactions on Image Processing
Volume

22

Issue

7

Start page

2611

End page

2626

Subjects

Compressive sensing

•

image reconstruction

•

lts5

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LTS5  
Available on Infoscience
November 13, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/86863
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