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

DOI: 10.1364/OE.22.019078 DOI Help
PMID: 25320994 PMID Help

Authors: Nghia T. Vo (Diamond Light Source) , Michael Drakopoulos (Diamond Light Source) , Robert Atwood (Diamond Light Source) , Christina Reinhard (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Optics Express , VOL 22

State: Published (Approved)
Published: July 2014

Open Access Open Access

Abstract: 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.

Journal Keywords: Tomographic Image Processing; X-Ray Tomography

Subject Areas: Technique Development, Physics

Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

Added On: 08/08/2014 10:56

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