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research article

Joint Reconstruction of Multi-view Compressed Images

Thirumalai, Vijayaraghavan  
•
Frossard, Pascal  
2013
IEEE Transactions on Image Processing

The distributed representation of correlated multi-view images is an important problem that arise in vision sensor networks. This paper concentrates on the joint reconstruction problem where the distributively compressed correlated images are jointly decoded in order to improve the reconstruction quality of all the compressed images. We consider a scenario where the images captured at different viewpoints are encoded independently using common coding solutions (e.g., JPEG, H.264 intra) with a balanced rate distribution among different cameras. A central decoder first estimates the underlying correlation model from the independently compressed images which will be used for the joint signal recovery. The joint reconstruction is then cast as a constrained convex optimization problem that reconstructs total-variation (TV) smooth images that comply with the estimated correlation model. At the same time, we add constraints that force the reconstructed images to be consistent with their compressed versions. We show by experiments that the proposed joint reconstruction scheme outperforms independent reconstruction in terms of image quality, for a given target bit rate. In addition, the decoding performance of our proposed algorithm compares advantageously to state-of-the-art distributed coding schemes based on disparity learning and on the DISCOVER.

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Type
research article
DOI
10.1109/Tip.2013.2240006
Web of Science ID

WOS:000318476800022

ArXiv ID

1206.4326

Author(s)
Thirumalai, Vijayaraghavan  
Frossard, Pascal  
Date Issued

2013

Publisher

Institute of Electrical and Electronics Engineers

Published in
IEEE Transactions on Image Processing
Volume

22

Issue

5

Start page

1969

End page

1981

Subjects

Distributed compression

•

Joint reconstruction

•

Multi-view images

•

Optimization

•

LTS4

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LTS4  
Available on Infoscience
June 21, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/82015
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