Multiple description video coding using correlation optimized temporal sampling  

作　　者：BAI HuiHui ZHANG MengMeng WANG AnHong ZHAO Yao 

机构地区：[1]Institute of Information Science, Beijing Jiaotong University [2]North China University of Technology [3]Taiyuan University of Science and Technology

出　　处：《Science China(Information Sciences)》2014年第5期204-213,共10页中国科学（信息科学）（英文版）

基　　金：supported in part by National Basic Research Program of China(973 Program)(Grant No.2012CB316400);National Natural Science Foundation of China(Grant Nos.60903066,61073142,61103113,61272051,61272262);Beijing Natural Science Foundation(Grant No.4102049);Specialized Research Fund for the Doctoral Program of Higher Education(Grant No.20090009120006);Fundamental Research Funds for the Central Universities(Grant Nos.2011JBM214,2012JBZ012);Jiangsu Provincial Natural Science Foundation(BK2011455)

摘　　要：We propose a novel multiple description video coding scheme based on pre- and post-processing of video sequences without modifying the actual coding process itself, thus making it compatible with the current standard coding. In pre-processing, adaptive modes of temporal sampling are employed to regulate the motion change between frames before performing odd/even frame splitting, which facilitates good estimation of lost frames in post-processing after side decoding. Significantly, given a central distortion, rate-distortion optimization with Lagrangian formulation is applied in pre-processing to achieve a good tradeoff between bit rate and side distortion. Furthermore, to simplify Lagrangian optimization, a new optimization criterion is proposed based on the correlation of intra- and inter-descriptions. In the experiments, the proposed scheme achieves better performance compared with other tested multiple description coding （MDC） schemes in both an on-off MDC environment and lossy packet networks.We propose a novel multiple description video coding scheme based on pre- and post-processing of video sequences without modifying the actual coding process itself, thus making it compatible with the current standard coding. In pre-processing, adaptive modes of temporal sampling are employed to regulate the motion change between frames before performing odd/even frame splitting, which facilitates good estimation of lost frames in post-processing after side decoding. Significantly, given a central distortion, rate-distortion optimization with Lagrangian formulation is applied in pre-processing to achieve a good tradeoff between bit rate and side distortion. Furthermore, to simplify Lagrangian optimization, a new optimization criterion is proposed based on the correlation of intra- and inter-descriptions. In the experiments, the proposed scheme achieves better performance compared with other tested multiple description coding （MDC） schemes in both an on-off MDC environment and lossy packet networks.

关 键 词：video coding multiple description coding temporal sampling rate-distortion optimization cor-relation optimization 

分 类 号：TN919.81[电子电信—通信与信息系统] X831.01[电子电信—信息与通信工程]