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Technical Program
Paper Detail
| Paper: | MA-P2.5 |
| Session: | Distributed Image and Video Coding - I |
| Time: | Monday, October 9, 09:40 - 12:20 |
| Presentation: |
Poster
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| Title: |
EXPLOITING SPATIAL REDUNDANCY IN PIXEL DOMAIN WYNER-ZIV VIDEO CODING |
| Authors: |
Marco Tagliasacchi; Politecnico di Milano | | | | | Alan Trapanese; Politecnico di Milano | | | | | Stefano Tubaro; Politecnico di Milano | | | | | João Ascenso; Instituto Superior Técnico | | | | | Catarina Brites; Instituto Superior Técnico | | | | | Fernando Pereira; Instituto Superior Técnico | | |
| Abstract: |
Distributed video coding is a recent paradigm that enables a flexible distribution of the computational complexity between the encoder and the decoder building on top of distributed source coding principles. In this paper we focus on the scenario where most of the complexity is shifted to the decoder, thus achieving light encoding. We elaborate on a well known pixel based Wyner-Ziv architecture and we improve its coding efficiency by exploiting both spatial and temporal correlation at the decoder side, without the need of performing any transform at the encoder. In order to generate the side information, the decoder adaptively chooses spatial or temporal information, based on the local estimate of the correlation noise. Simulations on test sequences demonstrate that a coding gain of up to +1.8dB can be obtained with respect to the case that generates the side information by motion interpolation only. |
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