基于像素域的Wyner-Ziv编码技术分析  

Analysis of Wyner-Ziv Coding Based on Pixel-domain

作　　者：李深远[1] 房胜[1] 王琼[1] 

机构地区：[1]山东科技大学信息科学与工程学院,青岛266510

出　　处：《系统仿真学报》2006年第z1期442-444,共3页Journal of System Simulation

基　　金：山东省教育厅计划项目(J05c10)

摘　　要：分布式视频编码是一种全新的视频压缩技术,该编码理论基于20世纪70年代的Slepian-Wolf和Wyner-Ziv提出的信息论相关理论。首先介绍了分布式视频编码的基本信息论基础,然后着重分析了一种使用帧内编码、帧间解码技术的Wyner-Ziv编码器框架。在该框架中,输入的帧被分为Key帧和Wyner-Ziv帧两类,其中Key帧使用传统的帧间编码进行压缩,而Key帧之间的Wyner-Ziv帧使用Turbo码进行编码,并且在解码端通过对相邻的Key帧进行运动补偿插值,而得到用于解码Wyner-Ziv帧的辅助信息,最终将辅助信息与Wyner-Ziv帧结合,得到了效果比较理想的解码帧。文章的最后给出了相关结论。Distributed video coding is a new paradigm for video compression based on Slepian-Wolf’s and Wyner-Ziv’s information-theoretic related results from 1970’s. The basic information theory was introduced above all, then a Wyner-Ziv coding scheme was analyzed that used intraframe encoding and interframe decoding, and the frames were separated into the Key and the Wyner-Ziv. The key frames were compressed by a conventional intraframe codec while in-between frames are Wyner-Ziv encoded using turbo codes, at the decoder motion compensated interpolation between key in order to construct the side information for Wyner-Ziv frame decoding, and then the ideal decoded frames were got by combining the side information with the Wyner-Ziv frame. Finally, the related conclusion was given.

关 键 词：分布式视频编码Wyner-Ziv有损编码 辅助信息 帧内编码 帧间解码 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]