Dimensional Measurement Of Steel Products Using Computerized Tomography.

Timothy N. Sweany; Ikram E. Abdou

doi:10.1117/12.937876

18 May 1987 Dimensional Measurement Of Steel Products Using Computerized Tomography.

Timothy N. Sweany, Ikram E. Abdou

Proceedings Volume 0730, Automated Inspection and Measurement; (1987) https://doi.org/10.1117/12.937876
Event: Cambridge Symposium_Intelligent Robotics Systems, 1986, Cambridge, MA, United States

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.

Citation Download Citation

Timothy N. Sweany and Ikram E. Abdou "Dimensional Measurement Of Steel Products Using Computerized Tomography.", Proc. SPIE 0730, Automated Inspection and Measurement, (18 May 1987); https://doi.org/10.1117/12.937876

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