FUNCTIONALLY LAYERED CODING FOR RIVER MONITORING(International Workshop on Advanced Image Technology 2007)

概要

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A new type of layered coding system for use of river monitoring is proposed. The bit stream produced by a sensor node of the system is functionally separated into three layers. The first layer contains band signals, decomposed by the Haar transform, effective for water level detection. The second layer contains band signals for thumb-nail video. These layers are transmitted at low bit rate for regular monitoring. The third layer which contains additional data necessary for decoding original video signal is transmitted when the necessity arises. Experimental results show which band signals should be included into the first layer for water level detection based on the maximum likelihood estimation. It becomes possible to reduce power consumption in a sensor node by distributing computational load via internet and by sharing the temporal and spatial basis function decomposition between "compression" and "recognition".
社団法人電子情報通信学会の論文
2007-01-03