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Proceedings Paper

Balanced distributed coding of omnidirectional images
Author(s): Vijayaraghavan Thirumalai; Ivana Tosic; Pascal Frossard
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Paper Abstract

This paper presents a distributed coding scheme for the representation of 3D scenes captured by stereo omni-directional cameras. We consider a scenario where images captured from two different viewpoints are encoded independently, with a balanced rate distribution among the different cameras. The distributed coding is built on multiresolution representation and partitioning of the visual information in each camera. The encoder transmits one partition after entropy coding, as well as the syndrome bits resulting from the channel encoding of the other partition. The decoder exploits the intra-view correlation and attempts to reconstruct the source image by combination of the entropy-coded partition and the syndrome information. At the same time, it exploits the inter-view correlation using motion estimation between images from different cameras. Experiments demonstrate that the distributed coding solution performs better than a scheme where images are handled independently, and that the coding rate stays balanced between encoders.

Paper Details

Date Published: 28 January 2008
PDF: 12 pages
Proc. SPIE 6822, Visual Communications and Image Processing 2008, 68221Q (28 January 2008); doi: 10.1117/12.766295
Show Author Affiliations
Vijayaraghavan Thirumalai, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Ivana Tosic, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Pascal Frossard, Ecole Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 6822:
Visual Communications and Image Processing 2008
William A. Pearlman; John W. Woods; Ligang Lu, Editor(s)

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