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Proceedings Paper

Image metrics for the automated alignment of microtomography data
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Paper Abstract

The position of the rotation axis (center of rotation) is an important input parameter for the reconstruction of tomography data. We have recently presented a method for the determination of the center of rotation from sinogram data recorded in parallel-beam tomography, which is based on scoring of reconstructions with image metrics. The influence of noise on the metric value is investigated by simulation using a circular computer phantom. Limits on the precision of the method are discussed by calculation of the metric signal and its noise level. It is shown that for typical count rates and resolutions used in microtomographic imaging, the method enables to determine the center of rotation with a precision of better than 0.06 pixel.

Paper Details

Date Published: 7 September 2006
PDF: 9 pages
Proc. SPIE 6318, Developments in X-Ray Tomography V, 631818 (7 September 2006); doi: 10.1117/12.679101
Show Author Affiliations
Tilman Donath, GKSS-Research Ctr., Geesthacht (Germany)
Felix Beckmann, GKSS-Research Ctr., Geesthacht (Germany)
Andreas Schreyer, GKSS-Research Ctr., Geesthacht (Germany)

Published in SPIE Proceedings Vol. 6318:
Developments in X-Ray Tomography V
Ulrich Bonse, Editor(s)

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