基于迭代译码算法的分级分布式视频编码

山东大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (2): 58-61.

基于迭代译码算法的分级分布式视频编码

卿粼波,吕瑞,欧先锋,郑敏,何小海

四川大学电子信息学院图像信息研究所, 四川成都 610064

收稿日期:2010-12-01 出版日期:2011-04-16 发布日期:2010-12-01
作者简介:卿粼波(1982- ),男,讲师,博士,主要研究方向是通信与信息系统,模式识别.Email:qing-lb@scu.edu.cn
基金资助:
四川大学青年科学基金资助项目(校青2008005);欧盟FP7-PEOPLE-IRSES资助项目(247083)

An iterative decoding based scalable distributed video coding

QING Linbo, L Rui, OU Xianfeng, ZHENG Min, HE Xiaohai

Institute of Image Information, College of Electronics and Information Engineering,
Sichuan University, Chengdu 610064, China

Received:2010-12-01 Online:2011-04-16 Published:2010-12-01

摘要/Abstract

摘要：

分布式视频编码(distributed video coding, DVC)是一种新的视频编码算法,与传统视频编码系统相比,具有低编码复杂度和高鲁棒性的优点。但它的压缩率比较低,对画面组(group of picture, GOP)的长度依赖性比较大。将H.264解码算法引入像素域视频编码系统(pixel domain WynerZiv codec, PDWZ)中,提出了一种混合视频编码框架。系统采用了并行编码和迭代解码结构,同时引入了预测编码和一种新的边信息生成算法。仿真结果表明,提出的结构比最优的PDWZ有更高的压缩效率。同时它使视频能顺序编解码,并提供了多层的可分级性。

关键词: 画面组(GOP);迭代译码;预测编码;可分级视频编码, WZ视频编码技术

Abstract:

As a new video coding paradigm, distributed video coding (DVC) has lower encoding complexity and higher robustness to transmission error than conventional video coding. However, its compression ratio was comparatively low and highly dependent on groupofpictures (GOP) size. A combined video coding scheme was proposed by introducing H.264 coding into typical pixel domain WynerZiv (PDWZ) coding. The coder has a parallel encoding and iterative decoding structure, in which a predictive coding scheme and a novel sideinformation (SI) generation algorithm are also adopted. Simulation showed that the proposed architecture has higher compression ratio than an optimized PDWZ coder. Moreover, it enables a video to be processed in sequential order and provides multilayer in scalability.

Key words: group of picture(GOP), iterative decoding, predictive coding, scalable video coding, WynerZiv codec

卿粼波,吕瑞,欧先锋,郑敏,何小海. 基于迭代译码算法的分级分布式视频编码[J]. 山东大学学报(工学版), 2011, 41(2): 58-61.

QING Linbo, L Rui, OU Xianfeng, ZHENG Min, HE Xiaohai. An iterative decoding based scalable distributed video coding[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2011, 41(2): 58-61.

参考文献

多维度评价

Viewed

Full text

Abstract

Cited

Shared

Discussed