Evaluating a feedback channel based transform domain Wyner–Ziv video codec
- 作者：Catarina Brites ; Joã ; o Ascenso ; José ; Quintas Pedro ; Fern ; o Pereira
- 关键词：Distributed video coding ; Wyner– ; Ziv video coding ; Turbo coding ; Performance evaluation
- 刊名：Signal Processing ; Image Communication
- 出版年：2008
- 期刊代码：110_09235965
- 类别：cp
- 出版时间：April 2008
- 卷：23
- 期：4
- 页码：269-297
- 文件大小：1246 K
摘要
Wyner–Ziv (WZ) video coding—a particular case of distributed video coding (DVC)—is a new video coding paradigm based on two major Information Theory results: the Slepian–Wolf and Wyner–Ziv theorems. In recent years, some practical WZ video coding solutions have been proposed with promising results. One of the most popular WZ video coding architectures in the literature uses turbo codes based Slepian–Wolf coding and a feedback channel to perform rate control at the decoder. This WZ video coding architecture has been first proposed by researchers at Stanford University and has been after adopted and improved by many research groups around the world. However, while there are many papers published with changes and improvements to this architecture, the precise and detailed evaluation of its performance, targeting its deep understanding for future advances, has not been made. Available performance results are mostly partial, under unclear and incompatible conditions, using vaguely defined and also sometimes architecturally unrealistic codec solutions.