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Markov random field (MRF)based spatial regularizing methodology can improve the maps by imposing a spatial smoothness prior on the image grid, but also leads to oversmoothing at image boundary areas. This problem is caused by the reason that classic isotropous smoothness prior cannot take local discontinuities into account. In this context, this paper proposes a novel two-step MRF regularization algorithm,...
Localization with a small number of beacons is a challenging problem in wireless network. Traditional approaches commonly treat it as a nonlinear optimization problem which makes the computation very costly. In this paper, we propose a linear programming algorithm to address the problem. We formulate the nonlinear problem as a simple linear programming using linear approximation and our target is...
The circle geometric constraint model (CGCM) was put forward for resolving the open-pit mine ore-matching problems (OMOMP). By adopting the approaches of graph theory, block model of blasted piles was abstracted into a set of nodes and directed edges, which were connected together with other nodes in the range of circle constraints, to describe the mining sequence. Also, the constructing method of...
A multi-radio multi-channel wireless mesh network (MRMC-WMN) consists of multiple wireless routers. Each router is equipped with multiple radios. There are multiple orthogonal frequency channels available in the network. Given the physical topology of the routers and the traffic flows, four important issues should be addressed in MRMC-WMN: logical topology formulation, channel allocation, routing...
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