Robust multiple description distributed video coding using optimized zero-padding

查看全文 作　　者：WANG [1,2]AnHong;ZHAO [1]Yao;BAI [1]HuiHui

机构地区：[1]Institute of Information Science, Beijing Jiaotong University, Beijing 100044, China;[2]Taiyuan University of Science and Technology, Taiyuan 030024, China

出　　处：《Science in China(Series F)》索引2009年第52卷第2期,共9页

基　　金：Supported in part by the National Natural Science Foundation of China (Grant Nos.60776794 and 90604032);the National Basic Research Program of China (973 program) (Grant No.2006CB303104);the National High-tech Research & Development Program of China (863 program)(Grant No.2007AA01Z175);Program for Changjiang Scholars and Innovative Research Team in University (Grant No.IRT0707);Specialized Research Foundation of BJTU,Youth Science Technology Research Foundation of Shanxi Province (Grant No.2008021020) 摘　　要：Distributed video coding (DVC) arouses high interests due to its property of low-complexity encoding. This paper proposes a robust multiple description DVC (MDDVC) under the constraint of low-complexity encoding. In MDDVC,zeros are padded to each frame and the resulting big-size video is divided into multiple descriptions. Then,each description is compressed by a hybrid DVC (HDVC) codec and trans-mitted over different channel. When one channel does not work,the lost HDVC description is estimated by the received from other channel,which guarantees the robustness of the system;MDDVC moves the complex motion estimation totally to the decoder so it features low-complexity encoding. In the pre-processing,an optimized zero-padding is also proposed to improve the performance. Experimen-tal results exhibit that the proposed MDDVC scheme achieves better rate-distortion performance and robustness than the referenced especially when packet-loss rate is high. 关键词：分配电视编译码失真性多描述译码填零

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Robust multiple description distributed video coding using optimized zero-padding

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