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Coupled ptychography and tomography algorithm improves reconstruction of experimental data

Kahnt, Maik LU orcid ; Becher, Johannes ; Brückner, Dennis ; Fam, Yakub ; Sheppard, Thomas ; Weissenberger, Tobias ; Wittwer, Felix ; Grunwaldt, Jan Dierk ; Schwieger, Wilhelm and Schroer, Christian G. (2019) In Optica 6(10). p.1282-1289
Abstract

Three-dimensional (3D) x-ray microscopy by ptychographic tomography requires elaborate numerical reconstructions. We describe a coupled ptychography-tomography reconstruction algorithm and apply it to an experimental ptychographic x-ray computed tomography data set of a catalyst particle. Compared to the traditional sequential algorithm, in which ptychographic projections are reconstructed to serve as input for subsequent tomographic reconstruction, the coupled ptychography-tomography algorithm reconstructs the 3D volume with higher spatial resolution over a larger field of view. Coupling the data from different projections improves the overall reconstruction, and the ptychographic sampling in individual projections can be coarsened... (More)

Three-dimensional (3D) x-ray microscopy by ptychographic tomography requires elaborate numerical reconstructions. We describe a coupled ptychography-tomography reconstruction algorithm and apply it to an experimental ptychographic x-ray computed tomography data set of a catalyst particle. Compared to the traditional sequential algorithm, in which ptychographic projections are reconstructed to serve as input for subsequent tomographic reconstruction, the coupled ptychography-tomography algorithm reconstructs the 3D volume with higher spatial resolution over a larger field of view. Coupling the data from different projections improves the overall reconstruction, and the ptychographic sampling in individual projections can be coarsened beyond the point of overlap between neighboring scan points, still leading to stable reconstructions.

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author
; ; ; ; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
in
Optica
volume
6
issue
10
pages
8 pages
publisher
Optical Society of America
external identifiers
  • scopus:85074542087
ISSN
2334-2536
DOI
10.1364/OPTICA.6.001282
language
English
LU publication?
no
id
ca626309-5f62-40f4-a7f4-4ba14f494c30
date added to LUP
2019-11-16 13:51:11
date last changed
2023-12-04 03:45:07
@article{ca626309-5f62-40f4-a7f4-4ba14f494c30,
  abstract     = {{<p>Three-dimensional (3D) x-ray microscopy by ptychographic tomography requires elaborate numerical reconstructions. We describe a coupled ptychography-tomography reconstruction algorithm and apply it to an experimental ptychographic x-ray computed tomography data set of a catalyst particle. Compared to the traditional sequential algorithm, in which ptychographic projections are reconstructed to serve as input for subsequent tomographic reconstruction, the coupled ptychography-tomography algorithm reconstructs the 3D volume with higher spatial resolution over a larger field of view. Coupling the data from different projections improves the overall reconstruction, and the ptychographic sampling in individual projections can be coarsened beyond the point of overlap between neighboring scan points, still leading to stable reconstructions.</p>}},
  author       = {{Kahnt, Maik and Becher, Johannes and Brückner, Dennis and Fam, Yakub and Sheppard, Thomas and Weissenberger, Tobias and Wittwer, Felix and Grunwaldt, Jan Dierk and Schwieger, Wilhelm and Schroer, Christian G.}},
  issn         = {{2334-2536}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{10}},
  pages        = {{1282--1289}},
  publisher    = {{Optical Society of America}},
  series       = {{Optica}},
  title        = {{Coupled ptychography and tomography algorithm improves reconstruction of experimental data}},
  url          = {{http://dx.doi.org/10.1364/OPTICA.6.001282}},
  doi          = {{10.1364/OPTICA.6.001282}},
  volume       = {{6}},
  year         = {{2019}},
}