Contrast-transfer-function phase retrieval based on compressed sensing

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

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.

Detaljer

Författare
Externa organisationer
  • Paul Scherrer Institute
  • ETH Zürich
  • European Synchrotron Radiation Facility
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Atom- och molekylfysik och optik
Originalspråkengelska
Sidor (från-till)1133-1136
Antal sidor4
TidskriftOptics Letters
Volym42
Utgivningsnummer6
StatusPublished - 2017 mar 15
PublikationskategoriForskning
Peer review utfördJa
Externt publiceradJa