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The ability to geometrically represent sensed phenomena within a wireless sensor network can provide a more concise view than enumeration of all nodes identifying a phenomenon. A more concise view of sensed data can reduce the communication and energy costs of data analysis and extend the lifetime of the network. The authors propose a distributed edge detection technique that identifies connected perimeters for sensed phenomena within wireless sensor networks. The technique operates in arbitrarily deployed wireless sensor networks, such as those containing connectivity holes, and is capable of correctly identifying the perimeters of irregularly shaped phenomena.
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