基于视觉相关性的无线多媒体传感器网络节能策略

针对资源受限的纯相机无线多媒体传感器网络的能量消耗问题，改进了视觉相关性算法，并提出了一种新颖的基于视觉相关性的完全分布式节能策略.首先，根据视觉相关性系数算法计算相机的视觉相关性系数向量;其次，利用视觉相关性系数向量得到相机的竞争筹码并以此确定相机的角色;然后，运行两个并行且相互交互的操作:簇头相机根据簇头权重向量确定下一跳并完成路由建立;非簇头相机计算亲密度向量并且得到自己的簇ID.最后，实验结果表明本文提出的节能策略能有效地延长资源受限无线多媒体传感器网络的生命周期.

Energy Conservation Strategy for Wireless Multimedia Sensor Networks Based on Visual Correlation

In order to reduce the energy consumption in resource-constrained homogeneous camera wireless multimedia sensor networks(WMSNs)， the visual correlation algorithm was developed and a novel fully distributed energy conservation strategy based on the developed visual correlation algorithm was proposed. Firstly， the visual correlation vector was calculated by the visual correlation algorithm. Then， the competition chips were obtained by applying the visual correlation vector， thus the role of camera was determined. After that， two parallel and interactive operations were executed: the cluster head nodes determine its own next-hop and establish the route according to the weight vector; the non-cluster head nodes obtain its own cluster ID by calculating the intimacy vector. Finally， experimental results demonstrate that the proposed strategy can effectively prolong the network lifetime in resource-constrained wireless multimedia sensor networks.