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Proceedings Article

A robust procedure for determination of center of rotation in tomography

[+] Author Affiliations
Antonio Brunetti

Univ. degli Studi di Sassari (Italy) and Argonne National Lab. (USA) and INFN (Italy)

Francesco De Carlo

Argonne National Lab. (USA)

Proc. SPIE 5535, Developments in X-Ray Tomography IV, 652 (October 26, 2004); doi:10.1117/12.560440
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From Conference Volume 5535

  • Developments in X-Ray Tomography IV
  • Ulrich Bonse
  • Denver, CO | August 02, 2004

abstract

Performing computed assisted tomography (CAT) requires a perfect centering of the rotation axis with the center of the detector. This requirement is sometimes hard to obtain. Thus, a post acquisition centering correction of the acquired data is mandatory. Several correction techniques can be found in the literature. However, all of them are not completely reliable when the measure is not performed in perfect experimental condition. As matter of fact, researcher use to fit the center of rotation by a post measure visual inspection of the projections. This approach is not practical at highthroughput tomography system where hundreds of samples a day can be easily measured [1], moreover, the visual approach does not always give the best centering. In this paper we report a new centering technique that is more robust when the quality of the acquired data is poor due to low contrast or noisy acquisition.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Antonio Brunetti and Francesco De Carlo
"A robust procedure for determination of center of rotation in tomography", Proc. SPIE 5535, Developments in X-Ray Tomography IV, 652 (October 26, 2004); doi:10.1117/12.560440; http://dx.doi.org/10.1117/12.560440


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