Exploiting Spatial Redundancy in Pixel Domain Wyner-Ziv Video Coding

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

• Type: Conference
• Year: 2006
• Where: ICIP
• Authors: Alan Trapanese, Catarina Brites, Fernando Pereira, João Ascenso, Marco Tagliasacchi, Stefano Tubaro
• Keywords: Coding Efficiency, Decoder Building, Decoder Side, ICIP 2006, Image Processing, Source Coding Principles, Temporal Correlation