inria-00629001, version 1
Lossy Compression of Distributed Sparse Sources: a Practical Scheme
Giulio Coluccia 1Enrico Magli 1Aline Roumy
2Velotiaray Toto-Zarasoa
a, 2
2011 European Signal Processing Conference (EUSIPCO‐2011) (2011)
Résumé : A new lossy compression scheme for distributed and sparse sources under a low complexity encoding con- straint is proposed. This architecture is able to exploit both intra- and inter-signal correlations typical of sig- nals monitored, for example, by a wireless sensor net- work. In order to meet the low complexity constraint, the encoding stage is performed by a lossy distributed compressed sensing (CS) algorithm. The novelty of the scheme consists in the combination of lossy distributed source coding (DSC) and CS. More precisely, we pro- pose a joint CS reconstruction lter, which exploits the knowledge of the side information to improve the qual- ity of both the dequantization and the CS reconstruction steps. The joint use of CS and DSC allows to achieve large bit-rate savings for the same quality with respect to the non-distributed CS scheme, e.g. up to 1.2 bps in the cases considered in this paper. Compared to the DSC scheme (without CS), we observe a gain increasing with the rate for the same mean square error.
- a – INRIA
- 1 : Image Processing Lab [Torino] (IPL)
- Politecnico di Torino
- 2 : TEMICS (INRIA - IRISA)
- CNRS : UMR6074 – INRIA – Université de Rennes 1
- Collaboration : PRIN project ARACHNE funded by the Italian Ministry of Education, University and Research
- Domaine : Sciences de l'ingénieur/Traitement du signal et de l'image
Informatique/Traitement du signal et de l'image
- inria-00629001, version 1
- http://hal.inria.fr/inria-00629001
- oai:hal.inria.fr:inria-00629001
- Contributeur : Aline Roumy
- Soumis le : Mardi 4 Octobre 2011, 16:29:16
- Dernière modification le : Jeudi 6 Octobre 2011, 15:26:23






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