Citation Context

...ne-based deployment rather than the Poisson distribution model, and a tight lower-bound for the existence of barrier coverage was established. Li et al. [12] proposed an energy efficient scheduling algorithm for barrier coverage with probabilistic sensing model. Recently, barrier coverage in directional sensor networks has gradually received more and more attention. Zhang et al. [22] studied the strong barrier coverage problem for rotationally directional sensors. A novel full-view coverage model was introduced in [21] for camera sensor networks. With the full-view coverage model, Wang et al. [20] further proposed a novel method to select camera sensors from an arbitrary deployment to form a camera barrier. The minimum camera barrier coverage problem was studied in camera sensor networks [14]. Tao et al. [19] investigated the problem of finding appropriate orientations of directional sensors such that they can provide strong barrier coverage. With the development of mobile sensors, node mobility is exploited to improve barrier coverage. Shen et al. [17] studied the energy efficient relocation problem for barrier coverage in mobile sensor networks. Keung et al. [9] focused on providing ...

Citation Context

...ation order, and the coverage list is denoted by Cp = { #s–psi1 , #s–psi2 , · · · , #s–psim} . The following lemma filters out non-FVC subregions of a camera sensor. Lemma 1 (Full-view Coverage Point =-=[12]-=-). A given point p is full-view covered if and only if the angle between any adjacent directions in Cp is less than or equal to 2ϕ , namely for ∀ #s–psk, #s–psk+1 ∈ Cp , ∠( #s–psk, #s–psk+1) ≤ 2ϕ . Ac...

Citation Context

... in [12], the authors analyzed the necessary and sufficient condition to achieve full view coverage separately. Other existing works on CSNs are mainly concerned with full view barrier coverage as in =-=[13]-=- and [14], which suggests the critical condition to achieve full view area coverage in mobile camera sensor network still remains an open problem. In this paper, we concentrate on the critical conditi...

Citation Context

...d in [13], the 3authors analyzed the necessary and sucient condition to achieve full view coverage separately. Other existing works on CSNs are mainly concerned with full view barrier coverage as in =-=[14]-=- and [15], which suggests the critical condition to achieve full view area coverage in mobile camera sensor network still remains an open problem. In this paper, we concentrate on the critical conditi...

Citation Context

...n the target and the object, which does not consider the uniqueness of photo coverage. Our work is inspired by the full-view coverage model which was originally proposed in [22] and later extended in =-=[21, 23]-=-. An object is considered to be full-view covered if no matter which direction the object faces, there is always a sensor whose sensing range includes the object and that sensor’s viewing direction is...

Citation Context

...gorithm to construct multiple disjoint barriers for strong barrier coverage in a randomly deployed sensor network on a long irregular strip region. Saipulla et al. [18] studied the barrier coverage of the line-based deployment rather than the Poisson distribution model and a tight lower-bound for the existence of barrier coverage was established. Li et al. [12] proposed an energy efficient scheduling algorithm for barrier coverage with probabilistic sensing model. A novel full-view coverage model was introduced in [23] for camera sensor networks. With the full-view coverage model, Wang et al. [22] further proposed a novel method to select camera sensors from an arbitrary deployment to form a camera barrier. The minimum camera barrier coverage problem was studied in camera sensor networks [14]. Tao et al. [21] investigated the problem of finding appropriate orientations of directional sensors such that they can provide strong barrier coverage. With the development of mobile sensors, node mobility is exploited to improve barrier coverage. Shen et al. [19] studied the energy efficient relocation problem for barrier coverage in mobile sensor networks. Keung et al. [10] focused on providing...