| Paper: | MP-L1.3 |
| Session: | Distributed Source Coding I: Low Complexity Video Coding |
| Time: | Monday, September 17, 15:10 - 15:30 |
| Presentation: |
Special Session Lecture
|
| Title: |
OVERLAPPED QUASI-ARITHMETIC CODES FOR DISTRIBUTED VIDEO CODING |
| Authors: |
Xavi Artigas; Technical University of Catalonia | | |
| | Simon Malinowski; IRISA / University of Rennes | | |
| | Christine Guillemot; IRISA / INRIA | | |
| | Luis Torres; Technical University of Catalonia | | |
| Abstract: |
This paper describes Slepian-Wolf codes based on overlapped quasi-arithmetic codes, where overlapping allows lossy compression of the source below its entropy. In the context of separate decoding, these codes are not uniquely decodable: the overlap introduces ambiguity in the decoding process leading to decoding errors. The presence of correlated side information at the decoder is used to remove this ambiguity and achieve a vanishing error probability. The state models and the automata of the overlapped quasi-arithmetic codes are described. The soft decoding algorithm with side information is then presented. The performance of these codes has been assessed first on theoretical sources and integrated in a distributed video coding platform. |
