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math.NA2025
Stochastic Multigrid Method for Blind Ptychography
Borong Zhang, Junjing Deng, Yi Jiang +1
Blind ptychography reconstructs an object and a probe from diffraction measurements collected over overlapping scan regions. We introduce a reconstruction framework with two comple…
math.NA2025
MAGPIE: Multilevel-Adaptive-Guided Solver for Ptychographic Phase Retrieval
Borong Zhang, Qin Li, Zichao Wendy Di
We introduce MAGPIE (Multilevel-Adaptive-Guided Ptychographic Iterative Engine), a stochastic multigrid solver for the ptychographic phase-retrieval problem. The ptychographic phas…