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Accelerating ptychographic reconstructions using spectral initializations
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DOI：10.1364/OL.406156.png)
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Abstract
En 中文
Ptychography is a promising phase retrieval technique for label-free quantitative phase imaging. Recent advances in phase retrieval algorithms witnessed the development of spectral methods to accelerate gradient descent algorithms. Using spectral initializations on experimental data, for the first time, we report three times faster ptychographic reconstructions than with a standard gradient descent algorithm and improved resilience to noise. Coming at no additional computational cost compared to gradient-descent-based algorithms, spectral methods have the potential to be implemented in large-scale iterative ptychographic algorithms. (C) 2021 Optical Society of America
Keywords:
FOURIER PTYCHOGRAPHY
PHASE RETRIEVAL
ILLUMINATION
RECOVERY