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中文摘要：
提出了一种多媒体传感器网络节能数据采样与传输方法。利用Voronoi图来调节节点的传感方向以提高网络覆盖度,并通过可变采样粒度的周期性传感,降低采样能耗。同时,基于色块匹配,进一步降低了数据传输开销。仿真结果表明,在延长网络生存时间方面表现出了较好性能。
英文摘要：
An energy-efficient data sampling and transmission method in wireless multimedia sensor networks was proposed.Node＇s sensing direction could be adjusted with the help of Voronoi diagram which enhances network coverage level.And energy consumption on sampling was reduced on the basis of periodical sleeping as well as different sampling granularities.Moreover,the transmission overhead was further brought down by means of color block matching.Simulation results show that this method obtains satisfactory performance on prolonging networks lifetime.
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