计算机应用 ›› 2012, Vol. 32 ›› Issue (05): 1232-1235.

• 网络与通信 • 上一篇    下一篇

基于无线视频传感器网络的失真优化路由算法

陈旭1,沈军2,罗护2,付新华2   

  1. 1. 桂林电子科技大学 计算机科学与工程学院,广西 桂林 541004
    2. 桂林空军学院 科研部,广西 桂林 541003
  • 收稿日期:2011-10-19 修回日期:2011-12-05 发布日期:2012-05-01 出版日期:2012-05-01
  • 通讯作者: 陈旭
  • 作者简介:陈旭(1985-),男,广西桂林人,硕士研究生,主要研究方向:无线传感器网络视频传输;沈军(1966-),男,浙江萧山人,教授,博士,主要研究方向:无线传感器网络;罗护(1971-),男,湖南长沙人,讲师,博士,主要研究方向:精密工程、计算机控制;付新华(1980-),男,湖南怀化人,讲师,博士,主要研究方向:检测自动化与智能化。
  • 基金资助:

    军队装备科研项目(KJ08069)

Distortion optimized routing algorithm in wireless video sensor network

CHEN Xu1,SHEN Jun2,LUO Hu2,FU Xin-hua2   

  1. 1. College of Computer Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, China
    2. Department of Scientific Research, Guilin Air Force Academy, Guilin Guangxi 541003, China
  • Received:2011-10-19 Revised:2011-12-05 Online:2012-05-01 Published:2012-05-01
  • Contact: CHEN Xu

摘要: 针对无线视频传感器网络链路不稳定、重建质量要求不高的特点,提出一种适应多描述编码(MDC)可靠传输的路由算法EDLOR。该算法充分考虑了视频编码速率、时延受限、网络丢包等因素,以多描述峰值信噪比(PSNR)作为优化目标,使视频总体失真最小化;然后根据计算结果,将多描述编码分配到指定的路径进行传输。实验结果表明,EDLOR路由算法能够提高平均PSNR,降低了网络丢包率,提升了总体视频质量。

关键词: 无线视频传感器网络, 多描述编码, 视频传输, 路由, 峰值信噪比

Abstract: According to the characteristics of wireless sensor network link with video transmission instability and poor reconstruction quality, this paper proposed an reliable transmission of routing algorithm (EDLOR) which is adaptive to Multiple Description Coding (MDC). Firstly, it took fully consideration about the video coding rate, delay-constrained, network packet loss and other factors. Secondly, it aimed at how to optimize multiple description of the Peak Signal-to-Noise Ratio(PSNR). As a result, the overall video distortion minimization was gained. Thirdly, these MDCs would be assigned to designed path for transmission according the computed results. It is shown from experimental results that EDLOR can improve the overall video quality through promoting the average PSNR and lowering packet loss rate.

Key words: wireless video sensor network, multiple description coding, video transmission, routing, Peak Signal-to-Noise Ratio (PSNR)

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