Image segmentation is a platform for many high-level applications. It aims to identify the different homogeneous regions of an image. In our work, we cast the problem as a parallel distributed optimization task and we...
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ISBN:
(纸本)9781479959341
Image segmentation is a platform for many high-level applications. It aims to identify the different homogeneous regions of an image. In our work, we cast the problem as a parallel distributed optimization task and we present a new method for image segmentation by multilevel thresholding based on generalized island model (GIM). This model is characterized by the cooperation of three metaheuristics namely Particle Swarm optimization (PSO), Genetic Algorithm (GA) and Artificial Bee Colony (ABC). The cooperation is ensured by the use of a migration pattern the purpose of which is to avoid getting stuck in local optima. The effectiveness of the proposed method has been assessed and compared to each of the algorithms of the GIM model when used separately and other methods from the literature like Darwinian PSO (DPSO), Fractional-Order Darwinian PSO (FO-DPSO). The obtained results are very promising and show the positive impact of the use of a paralleldistributed model. They also show that the proposed method competes and even outperforms the other methods.
In this paper, we reviewed several forms of alternating direction method of multipliers (ADMM) for distributed power system computing. The major focus is on ADMM based distributedparalleloptimization algorithm which...
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ISBN:
(纸本)9781509032709
In this paper, we reviewed several forms of alternating direction method of multipliers (ADMM) for distributed power system computing. The major focus is on ADMM based distributedparalleloptimization algorithm which is feasible to be implemented in power network. Firstly, we introduced the general form of ADMM, and extend the 2-block ADMM to N-block multi-block ADMM. Next, we focus on two distributedparallel ADMM based optimization algorithms: Consensus ADMM (CADMM) and Proximal Jacobian ADMM (PJ-ADMM). A threearea DC optimal power flow (OPF) problem and a two-area AC OPF problem are tested for ADMM implementation. Information exchange structure and the numerical convergence results of the ADMM algorithms are given.
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