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GEOINFORMATICA
2011

Qualitative change detection using sensor networks based on connectivity information

8 years 8 months ago
Qualitative change detection using sensor networks based on connectivity information
The research reported in this paper uses wireless sensor networks to provide salient information about spatially distributed dynamic fields, such as regional variations in temperature or concentration of a toxic gas. The focus is on deriving qualitative descriptions of salient changes to areas of high-activity that occur during the temporal evolution of the field. The changes reported include region merging or splitting, and hole formation or elimination. Such changes are formally characterized, and a distributed qualitative change reporting (QCR) approach is developed that detects the qualitative changes simply based on the connectivity between the sensor nodes without location information. The efficiency of the QCR approach is investigated using simulation experiments. The results show that the communication cost of the QCR approach in monitoring large-scale phenomena is an order of magnitude lower than that using the standard boundary-based data collection approach, where each nod...
Jixiang Jiang, Michael F. Worboys, Silvia Nittel
Added 14 May 2011
Updated 14 May 2011
Type Journal
Year 2011
Where GEOINFORMATICA
Authors Jixiang Jiang, Michael F. Worboys, Silvia Nittel
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