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Preprocessing techniques for removing artifacts in synchrotron-based tomographic images
Author(s): Nghia T. Vo; Robert C. Atwood; Michael Drakopoulos
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Paper Abstract

X-Ray parallel-beam micro-tomography systems at synchrotron facilities are mainly bespoke designs. Technical problems from a detector system can strongly affect the quality of reconstruction results. Radial lens distortion in the visible light optics causes streak artifacts which get stronger towards the edge of the image. The irregular response of the detector gives rise to a variety of stripe artifacts in the sonogram; full stripes, partial stripes, fluctuating stripes, and unresponsive stripes. These give rise to ring artifacts of different kinds in the reconstructed image. The scattering of the scintillation photons can cause artifacts which are similar to beam hardening artifacts and reduce the resolution of the image. Here we present our practical approaches to tackle each such problem. These approaches are easy to implement and have low computational cost. The algorithms are freely available as open-source software.

Paper Details

Date Published: 10 September 2019
PDF: 20 pages
Proc. SPIE 11113, Developments in X-Ray Tomography XII, 111131I (10 September 2019); doi: 10.1117/12.2530324
Show Author Affiliations
Nghia T. Vo, Diamond Light Source Ltd. (United Kingdom)
Robert C. Atwood, Diamond Light Source Ltd. (United Kingdom)
Michael Drakopoulos, Diamond Light Source Ltd. (United Kingdom)
Brookhaven National Lab. (United States)


Published in SPIE Proceedings Vol. 11113:
Developments in X-Ray Tomography XII
Bert Müller; Ge Wang, Editor(s)

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