Biaofei Xu

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—Due to the emerging multimedia applications, camera sensor network is getting more spotlight these days. The visual sensors adopted to implement camera sensor network are a kind of directional sensors, which are well-investigated in the context of directional sensor network in the literature. However, the design and implementation of camera sensor network(More)
Recently, the barrier-coverage of wireless sensor network received huge attention thanks to the important applications such as border protection. In practice, sensor nodes are subject to intermittent failure to detect objects within its sensing range due to many reasons. Therefore , a barrier of sensor nodes may exhibit temporal loopholes. In this paper, we(More)
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