Resolution Enhancement by Variable Zoom Trajectory in X-Ray Computed Tomography
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Date
2024-09-01
Authors
Blažek, Pavel
Suppes, Alexander
Wolfschläger, Dominik
Zikmund, Tomáš
Kaiser, Jozef
Schmitt, Robert H.
0000-0002-4029-1389Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
SPRINGER/PLENUM PUBLISHERS
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Abstract
Flat objects like electronic boards are challenging samples for high-resolution X-ray computed tomography scanning because their largest dimension significantly limits the magnification using circular trajectory scans. One way to improve spatial resolution for such samples is to utilize variable zoom trajectory. During variable zoom trajectory scanning, the source-to-object distance changes during the 360 degrees rotation to maximize the magnification in the projections. Here, we propose an automatic variable zoom trajectory generation algorithm for arbitrary object and region of interest (ROI). We analyze how such a trajectory can enhance resolution in different cases and how isotropic is the resolution in the reconstructed volume. We demonstrate that the resolution can be improved without destroying the sample. However, the improvement is manifested mainly in directions in which we achieved the highest magnification in the projection.
Description
Citation
JOURNAL OF NONDESTRUCTIVE EVALUATION. 2024, vol. 43, issue 3, p. 1-11.
https://link.springer.com/article/10.1007/s10921-024-01093-6
https://link.springer.com/article/10.1007/s10921-024-01093-6
Document type
Peer-reviewed
Document version
Published version
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Language of document
en