A NEW APPROACH TO DVC COMBINED WITH ROI EXTRACTION AND RESIDUAL VIDEO CODING FOR MULTIMEDIA SENSOR NETWORKS  

作　　者：Lin Zhaoxiao Sun Lijuan Xiao Fu Wang Ruchuan 

机构地区：[1]College of Computer, Nanjing University of Posts and Telecommunications [2]Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks [3]Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications), Ministry of Education Jiangsu Province

出　　处：《Journal of Electronics(China)》2013年第1期17-24,共8页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.61003236, 61171053, 61170065);the Doctoral Fund of Ministry of Education of China (No.20113223110002);the Natural Science Major Program for Colleges and Universities in Jiangsu Province(No.11KJA520001)

摘　　要：The Wyner-Ziv distributed video coding scheme is characterized for its intraframe encoder and interframe decoder which can also approach the efficiency of an interframe encoder-decoder system. In Wyner-Ziv residual coding of video, the residual of a frame with respect to a reference frame is Wyner-Ziv encoded, which can reduces the input entropy and leads to a higher coding efficiency than directly encoding the original frame. In this paper, we propose a new approach of residual coding combined with Region Of Interest (ROI) extraction. Experimental results show that, the proposed scheme achieves better rate-distortion performance compared to conventional Wyner-Ziv coding scheme.The Wyner-Ziv distributed video coding scheme is characterized for its intraframe encoder and interframe decoder which can also approach the efficiency of an interframe encoder-decoder system. In Wyner-Ziv residual coding of video, the residual of a frame with respect to a reference frame is Wyner-Ziv encoded, which can reduces the input entropy and leads to a higher coding efficiency than directly encoding the original frame. In this paper, we propose a new approach of residual coding combined with Region Of Interest （ROI） extraction. Experimental results show that, the proposed scheme achieves better rate-distortion performance compared to conventional Wyner-Ziv coding scheme.

关 键 词：Distributed Video Coding （DVC） Residual video coding Region Of Interest （ROI） 

分 类 号：TN919.81[电子电信—通信与信息系统] TP212[电子电信—信息与通信工程]