Multigrid hierarchical simulated annealing method for reconstructing heterogeneous media
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Pant, Lalit M., Mitra, Sushanta K., & Secanell, Marc. (2015). Multigrid hierarchical simulated annealing method for reconstructing heterogeneous media. Physical Review E, 92(6), 063303. https://doi.org/10.1103/PhysRevE.92.063303
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https://doi.org/10.1103/PhysRevE.92.063303
Abstract
Description
A reconstruction methodology based on different-phase-neighbor (DPN) pixel swapping and multigrid hierarchical annealing is presented. The method performs reconstructions by starting at a coarse image and successively refining it. The DPN information is used at each refinement stage to freeze interior pixels of preformed structures. This preserves the large-scale structures in refined images and also reduces the number of pixels to be swapped, thereby resulting in a decrease in the necessary computational time to reach a solution. Compared to conventional single-grid simulated annealing, this method was found to reduce the required computation time to achieve a reconstruction by around a factor of 70–90, with the potential of even higher speedups for larger reconstructions. The method is able to perform medium sized (up to 3003 voxels) three-dimensional reconstructions with multiple correlation functions in 36–47 h.
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http://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_970fb48d4fbd8a85
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©2015 American Physical Society
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en