分布式远程视频监控系统视频传输技术研究

Study on error-resilient video transmission for distributed remote video monitoring system

介绍了分布式视频监控系统的结构 ,比较了 MPEG- 1、Motion- JPEG、H.2 6 3视频压缩标准的特征和适用范围 ,分析了视频图像运动补偿混合编码原理以及差错扩散的原因。本文重点研究了视频差错重同步、数据恢复和差错掩盖 (error concealment)控制策略 ,实现了视频解码中的差错恢复 (error- resilient)算法 ,提高了解码算法的健壮性 (robustness) ,增加了监控系统的差错控制能力。最后对分布式远程视频监控差错控制的研究方向进行了展望。

In this paper, the features of distributed remote video monitoring system(DRVMS)is introduced, and the features of video compression standards MPEG 1, Motion JPEG and H.263 are discussed. Based on studying of the principle of motion compensation hybrid codec and error propagation, the error control strategies of resnchronization, data recovery and error concealment are discussed in detail. Some of reeor resilient video decoding algorithms is implemented, which improves the robustness of the monitoring system. In the end, the future researching for error control of DRVMS is expected.