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Proceedings Paper

Dimensional Measurement Of Steel Products Using Computerized Tomography.
Author(s): Timothy N. Sweany; Ikram E. Abdou
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Paper Abstract

The dimensions of products emerging from a steel mill are needed for quality control. To answer this need, Bethlehem Steel developed a fourth-generation tomography system with fixed detectors and one rotating source. This paper derives and compares two methods of reconstruction that can be applied to such systems. One method uses rebinning to transform divergent beam projection to parallel projection, while the second is based on divergent reconstruction. To improve the quality of reconstructed images, the images are post-processed using global and local thresholds. A comparison of the various results is given.

Paper Details

Date Published: 18 May 1987
PDF: 8 pages
Proc. SPIE 0730, Automated Inspection and Measurement, (18 May 1987); doi: 10.1117/12.937876
Show Author Affiliations
Timothy N. Sweany, University of Delaware (United States)
Ikram E. Abdou, University of Delaware (United States)

Published in SPIE Proceedings Vol. 0730:
Automated Inspection and Measurement
Michael J. W. Chen; Robert H. Thibadeau, Editor(s)

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