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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 16 — Aug. 11, 2014
  • pp: 19078–19086

Reliable method for calculating the center of rotation in parallel-beam tomography

Nghia T. Vo, Michael Drakopoulos, Robert C. Atwood, and Christina Reinhard  »View Author Affiliations

Optics Express, Vol. 22, Issue 16, pp. 19078-19086 (2014)

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High-throughput processing of parallel-beam X-ray tomography at synchrotron facilities is lacking a reliable and robust method to determine the center of rotation in an automated fashion, i.e. without the need for a human scorer. Well-known techniques based on center of mass calculation, image registration, or reconstruction evaluation work well under favourable conditions but they fail in cases where samples are larger than field of view, when the projections show low signal-to-noise, or when optical defects dominate the contrast. Here we propose an alternative technique which is based on the Fourier analysis of the sinogram. Our technique shows excellent performance particularly on challenging data.

© 2014 Optical Society of America

OCIS Codes
(100.6950) Image processing : Tomographic image processing
(110.7440) Imaging systems : X-ray imaging
(340.6720) X-ray optics : Synchrotron radiation

ToC Category:
Image Processing

Original Manuscript: June 23, 2014
Revised Manuscript: July 18, 2014
Manuscript Accepted: July 18, 2014
Published: July 30, 2014

Nghia T. Vo, Michael Drakopoulos, Robert C. Atwood, and Christina Reinhard, "Reliable method for calculating the center of rotation in parallel-beam tomography," Opt. Express 22, 19078-19086 (2014)

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