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Pablo Villanueva Perez

Senior lecturer

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Contrast-transfer-function phase retrieval based on compressed sensing

Author

  • Pablo Villanueva-Perez
  • Filippo Arcadu
  • Peter Cloetens
  • Marco Stampanoni

Summary, in English

We report on a new contrast-transfer-function (CTF) phase-retrieval method based on the alternating direction method of multipliers (ADMMs), which allows us to exploit any compressed sensing regularization scheme reflecting the sparsity of the investigated object. The proposed iterative algorithm retrieves accurate phase maps from highly noisy single-distance projection microscopy data and is characterized by a stable convergence, not bounded to the prior knowledge of the object support or to the initialization strategy. Experiments on simulated and real datasets show that ADMM-CTF yields reconstructions with a substantial lower amount of artifacts and enhanced signal-to-noise ratio compared to the standard analytical inversion.

Publishing year

2017-03-15

Language

English

Pages

1133-1136

Publication/Series

Optics Letters

Volume

42

Issue

6

Document type

Journal article

Publisher

Optical Society of America

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0146-9592