摘要
为了解决无线传感器网络节点计算能力和节点能量问题,以非能量约束下的视频传输为基础,研究视频传输的码率-失真模型,获取编码性能与失真的定量关系.在编码过程中,分析了与能量消耗有关的因素与模块,建立无线传感器单节点"能量-码率-失真"的优化模型,使无线传感器网络在一定失真允许范围内,单节点能量消耗最优.通过实验数据分析表明,所建立的优化模型在一定失真允许的情况下,可以得到最优的模块间能量分配方案.
In order to solve such problems as the calculation ability and energy of wireless sensor network node, the rate-distortion model of video transmission was investigated based on the non energy constrained video transmission, and the quantitative relationship between the distortion and coding performance was obtained. The factors and modules related to energy consumption during coding process were analyzed. An optimized energy-rate-distortion model of single wireless sensor node was established. Therefore, the single node of wireless sensor network has the optimal energy consumption within certain distortion-permitted range. The experimental data analysis proves that the optimization of energy consumption can be achieved with permitting a certain distortion.
出处
《沈阳工业大学学报》
EI
CAS
2009年第5期558-563,共6页
Journal of Shenyang University of Technology
基金
国家自然科学基金资助项目(60772055)
关键词
无线传感器网络
视频传输
运动预测补偿
率失真优化
P-R-D模型
视频压缩
编码
能量优化
wireless sensor network
video transmission
motion prediction and compensation
rate-distortion optimization
P-R-D model
video compression
coding
energy optimization