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A wireless sensor network (WSN) consists of spatially distributed autonomous sensors to monitor physical or environmental conditions and to cooperatively pass their data through the network to a Base Station. Clustering is a critical task in Wireless Sensor Networks for energy efficiency and network stability. Clustering through Central Processing Unit in(More)
A novel algorithm for extracting the regions of interest (ROI) from face images is presented in this paper. The novelty of the algorithm comes from its <i>multi-resolution cellular analysis</i> coupled with an adaptive thresholding technique incorporating a unique idea of <i>exponential averaging</i>. The complexity of the cellular ROIs reported by the(More)
Intensive research efforts to integrate 3G cellular networks (such as UMTS) and IEEE 802.11 WLAN networks have been stimulated due to the complementary characteristics of UMTS and WLAN. In such integrated system, access control problems like channel partitioning, channel allocation to mobile nodes of both networks and switching of mobile nodes in the(More)
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