LOW-COMPLEXITY REDUNDANCY INSERTION IN MULTIPLE DESCRIPTION CODING  

作　　者：Yang Rener Li Jinxiang Wen Huafeng 

机构地区：[1]College of Information Science and Engineering, Ningbo University, Ningbo 315211, China

出　　处：《Journal of Electronics(China)》2008年第3期409-414,共6页电子科学学刊（英文版）

基　　金：Funded by the National Natural Science Foundation of China (No.60671037);Ningbo Industry Foundation (No.2007B10051);Zhejiang Province Key Industry Foundation (No.2006C11200);Scientific Research Fund of Zhejiang Provincial Education Department (No.20070956, No.20070978, No.20061661);Ningbo University Foundation (XK0610031)

摘　　要：Multiple description coding has recently been proposed as a joint source and channel coding to solve the problem of robust image transmission over unreliable network, and it can offer a variety of tradeoff between signal redundancy and transmission robustness. In this letter, a novel pre- and post-processing method with flexible redundancy insertion for polyphase downsampling multiple de- scription coding is presented. The proposed method can be implemented as pre- and post-processing to all standards for image and video communications, with obvious advantages. Simulation results show that this approach can reduce the computational complexity while provide a flexible redundancy in- sertion to make the system robust for any packet loss situation over different networks.Multiple description coding has recently been proposed as a joint source and channel coding to solve the problem of robust image transmission over unreliable network, and it can offer a variety of tradeoff between signal redundancy and transmission robustness. In this letter, a novel pre- and post-processing method with flexible redundancy insertion for polyphase downsampling multiple description coding is presented. The proposed method can be implemented as pre- and post-processing to all standards for image and video communications, with obvious advantages. Simulation results show that this approach can reduce the computational complexity while provide a flexible redundancy in- sertion to make the system robust for any packet loss situation over different networks.

关 键 词：Multiple description image coding Polyphase downsampling Redundancy insertion 

分 类 号：TN919.81[电子电信—通信与信息系统]