Kahnt, M;
Becher, J;
Brueckner, D;
Fam, Y;
Sheppard, T;
Weissenberger, T;
Wittwer, F;
... Schroer, CG; + view all
(2019)
Coupled ptychography and tomography algorithm improves reconstruction of experimental data.
Optica
, 6
(10)
pp. 1282-1289.
10.1364/OPTICA.6.001282.
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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.
| Type: | Article |
|---|---|
| Title: | Coupled ptychography and tomography algorithm improves reconstruction of experimental data |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OPTICA.6.001282 |
| Publisher version: | https://doi.org/10.1364/OPTICA.6.001282 |
| Language: | English |
| Additional information: | Copyright © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (https://doi.org/10.1364/OA_License_v1). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10085866 |
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