Coupled ptychography and tomography algorithm improves reconstruction of experimental data

Kahnt M, Becher J, Brueckner D, Fam Y, Sheppard T, Weissenberger T, Wittwer F, Grunwaldt JD, Schwieger W, Schroer CG (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Optica Optical Society of America

Book Volume: 6

Pages Range: 1282-1289

Journal Issue: 10

DOI: 10.1364/OPTICA.6.001282

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 beyond the point of overlap between neighboring scan points, still leading to stable reconstructions. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Authors with CRIS profile

Tobias Weissenberger Lehrstuhl für Chemische Reaktionstechnik (CRT) Wilhelm Schwieger Professur für Technische Chemie (Reaktionstechnik)

Involved external institutions

Karlsruhe Institute of Technology (KIT) DE Germany (DE) Deutsches Elektronen-Synchrotron DESY DE Germany (DE)

How to cite

APA:

Kahnt, M., Becher, J., Brueckner, D., Fam, Y., Sheppard, T., Weissenberger, T.,... Schroer, C.G. (2019). Coupled ptychography and tomography algorithm improves reconstruction of experimental data. Optica, 6(10), 1282-1289. https://doi.org/10.1364/OPTICA.6.001282

MLA:

Kahnt, Maik, et al. "Coupled ptychography and tomography algorithm improves reconstruction of experimental data." Optica 6.10 (2019): 1282-1289.

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