Joint ptycho-tomography reconstruction through alternating direction method of multipliers

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Abstract

We present the extension of ptychography for three-dimensional object reconstruction in a tomography setting. We describe the alternating direction method of multipliers (ADMM) as a generic reconstruction framework to efficiently solve the nonlinear optimization problem. In this framework, the ADMM breaks the joint reconstruction problem into two well-defined subproblems: ptychographic phase retrieval and tomographic reconstruction. In this paper, we use the gradient descent algorithm to solve both problems and demonstrate the efficiency of the proposed approach through numerical simulations. Further, we show that the proposed joint approach relaxes existing requirements for lateral probe overlap in conventional ptychography. Thus, it can allow more flexible data acquisition.

Detaljer

Författare
  • Selin Aslan
  • Viktor Nikitin
  • Daniel J. Ching
  • Tekin Bicer
  • Sven Leyffer
  • Doga Gürsoy
Enheter & grupper
Externa organisationer
  • Argonne National Laboratory
  • Northwestern University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Beräkningsmatematik
Originalspråkengelska
Sidor (från-till)9128-9143
Antal sidor16
TidskriftOptics Express
Volym27
Utgåva nummer6
StatusPublished - 2019
PublikationskategoriForskning
Peer review utfördJa