EAN: 9783642382024

WIRELESS MULTIMEDIA SENSOR NETWORKS ON RECONFIG...

Traditional wireless sensor networks (WSNs) capture scalar data such as temperature  vibration
pressure  or humidity. Motivated by the success of WSNs and also with the emergence of new
technology in the form of low-cost image sensors  researchers have proposed combining image and
audio sensors with WSNs to form wireless multimedia sensor networks (WMSNs). This introduces
practical and research challenges  because multimedia sensors  particularly image sensors 
generate huge amounts of data to be processed and distributed within the network  while sensor
nodes have restricted battery power and hardware resources. This book describes how
reconfigurable hardware technologies such as field-programmable gate arrays (FPGAs) offer
cost-effective  flexible platforms for implementing WMSNs  with a main focus on developing
efficient algorithms and architectures for information reduction  including event detection 
event compression  and multicamera processing for hardware implementations. The authors include
a comprehensive review of wireless multimedia sensor networks  a complete specification of a
very low-complexity  low-memory FPGA WMSN node processor  and several case studies that
illustrate information reduction algorithms for visual event compression  detection  and
fusion. The book will be of interest to academic researchers  R&D engineers  and computer
science and engineering graduate students engaged with signal and video processing  computer
vision  embedded systems  and sensor networks.

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