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Proceedings Paper

Camera-based curvature measurement of a large incandescent object
Author(s): Arttu V. H. Ollikkala; Timo P. Kananen; Anssi J. Mäkynen; Markus Holappa
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Paper Abstract

The goal of this work was to implement a low-cost machine vision system to help the roller operator to estimate the amount of strip camber during the rolling process. The machine vision system composing of a single camera, a standard PC-computer and a LabVIEW written program using straightforward image analysis determines the magnitude and direction of camber and presents the results both in numerical and graphical form on the computer screen. The system was calibrated with LED set-up which was also used to validate the accuracy of the system by mimicking the strip curvatures. The validation showed that the maximum difference between the true and measured values was less than ±4 mm (k=0.95) within the 22 meter long test pattern.

Paper Details

Date Published: 13 May 2013
PDF: 6 pages
Proc. SPIE 8788, Optical Measurement Systems for Industrial Inspection VIII, 87883D (13 May 2013); doi: 10.1117/12.2020646
Show Author Affiliations
Arttu V. H. Ollikkala, Univ. of Oulu (Finland)
Timo P. Kananen, Univ. of Oulu (Finland)
Anssi J. Mäkynen, Univ. of Oulu (Finland)
Markus Holappa, Rautaruukki Oyj (Finland)


Published in SPIE Proceedings Vol. 8788:
Optical Measurement Systems for Industrial Inspection VIII
Peter H. Lehmann; Wolfgang Osten; Armando Albertazzi, Editor(s)

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