Cooperative video summary transmission in wireless networks

Authors:
Dalei Wu;Zhu Han;Song Ci;Guan-Ming Su;Haohong Wang;Hui Tang
Affiliations:
Department of Computer and Electronics Engineering, University of Nebraska-Lincoln, Omaha, NE;Department of Electrical and Computer Engineering, University of Houston, Houston, TX;Department of Computer and Electronics Engineering, University of Nebraska-Lincoln, Omaha, NE and High Performance Network Lab, IoA, Chinese Academy of Sciences, Beijing, China;Marvell Semiconductor Inc., Santa Clara, CA;Marvell Semiconductor Inc., Santa Clara, CA;High Performance Network Lab, IoA, Chinese Academy of Sciences, Beijing, China
Venue:
SARNOFF'09 Proceedings of the 32nd international conference on Sarnoff symposium
Year:
2009

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Abstract

This paper addresses cooperative video summary delivery over wireless networks which inherits both advantages from cooperative communication and from video summarization. In this work, a novel decode-process-and-forward (DPF) scheme is proposed for video summary transmission, where a relay node with video processing capability is involved to generate a concise version of the summary frame, called summary of summary (SoS). The SoS information is effectively consumed by the destination side to enhance its error concealment capability, leading to an improved video reconstruction quality. This paper proposes a generic cross-layer optimization framework for cooperative video summary transmission, which jointly considers the source coding, relay processing parameters, power allocation, and error concealment strategy to achieve the best video quality. The problem is solved by using Lagrangian relaxation and dynamic programming (DP). Experimental results show that the proposed scheme significantly outperforms the direct transmission scheme, the multipath scheme, and the decode-and-forward transmission scheme by up to 25%.