Alignment of image profiles in optical gauging

Eric Elliott Pickett; Eddie Hsu

doi:10.1117/12.145551

28 May 1993 Alignment of image profiles in optical gauging

Eric Elliott Pickett, Eddie Hsu

Proceedings Volume 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing; (1993) https://doi.org/10.1117/12.145551
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

In a steel bar rolling mill, billets are run through a series of rolling stands to produce steel bars with various cross-sectional shapes. An optical gauge is used to provide on-line measurements for the purpose of statistical process control of the mill operation. The orientation of the bar in the gauge must be determined in order to accurately infer critical dimensions. An algorithm is developed for aligning the optical image to remove any bar twist. Bar size determination from the aligned measurement sequence using an exact interpolation technique is also described.

Citation Download Citation

Eric Elliott Pickett and Eddie Hsu "Alignment of image profiles in optical gauging", Proc. SPIE 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing, (28 May 1993); https://doi.org/10.1117/12.145551

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