基于分布式视频编码的低能耗视频传感器节点研究

Research of Low Energy Consumption Video Sensor Node Based on Distributed Video Coding

摘要:

在无线多媒体传感器网络中,如何提高节点能源的利用率,延长整个网络的生命周期是当前迫切需要解决的关键问题;从视频数据处理和传输能耗的角度出发,对分布式视频编码(DVC)基础理论及视频传感器节点的能耗模型进行分析和研究;通过实验仿真的方式将H.264帧内编码方案同DVC方案进行比较,实验结果表明了DISCOVER-DVC方案在节点节能方面的优势;最后基于DISCOVER-DVC算法,在S3C6410硬件平台和嵌入式Linux操作系统平台之上完成视频传感器节点设计,来降低节点能耗,提高节点生命周期。

Abstract:

It is necessary to improve energy efficiency of WMSN node to maximize prolong the lifecycle of the networks, since WMSN’ energy is limited and media information processing needs large energy consumption. This article focused on how to reduce the node data processing and transmission energy consumption with the video coding research. It compared the energy consumption of H.264 intra-frame coding scheme and the DVC scheme through simulation to analyze the data processing and transmission energy consumption of these two scheme. The results show that the DVC scheme can effectively reduce the energy consumption of the video sensor node. At last, it realized the DVC theory-based encoding scheme on the video sensor node based on S3C6410 and embedded Linux operating system to reduce energy consumption.