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• W2897856695 abstract "Ptychography is a popular imaging technique that combines diffractive imaging with scanning microscopy. The technique consists of a coherent beam that is scanned across an object in a series of overlapping positions, leading to reliable and improved reconstructions. Ptychographic microscopes allow for large fields to be imaged at high resolution at the cost of additional computational expense. In this work, we propose a multigrid-based optimization framework to reduce the computational burdens of large-scale ptychographic phase retrieval. Our proposed method exploits the inherent hierarchical structures in ptychography through tailored restriction and prolongation operators for the object and data domains. Our numerical results show that our proposed scheme accelerates the convergence of its underlying solver and outperforms the Ptychographic Iterative Engine (PIE), a workhorse in the optics community." @default.
• W2897856695 created "2018-10-26" @default.
• W2897856695 creator A5021352320 @default.
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• W2897856695 date "2018-10-12" @default.
• W2897856695 modified "2023-09-27" @default.
• W2897856695 title "Multigrid Optimization for Large-Scale Ptychographic Phase Retrieval" @default.
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• W2897856695 doi "https://doi.org/10.48550/arxiv.1810.05628" @default.
• W2897856695 hasPublicationYear "2018" @default.
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