Frontiers of Mechanical Engineering >

2009 , Vol. 4 >Issue 1: 77 - 82

DOI: https://doi.org/10.1007/s11465-009-0013-1

RESEARCH ARTICLE

Edge detection of steel plates at high temperature using image measurement

  • Qiong Zhou ,
  • Qi An
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  • School of Mechanical and Power Engineering of East China University of Science and Technology, Shanghai 200237, China

Received date: 10 Jul 2008

Accepted date: 02 Sep 2008

Published date: 05 Mar 2009

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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Abstract

An edge detection method for the measurement of steel plate’s thermal expansion is proposed in this paper, where the shrinkage of a steel plate is measured when temperature drops. First, images are picked up by an imaging system; a method of regional edge detection based on grayscales’ sudden change is then applied to detect the edges of the steel plate; finally, pixel coordinates of the edge position are transformed to physical coordinates through calibration parameters. The experiment shows that the real-time, high precision, and non-contact measurement of the steel plate’s edge position under high temperature can be realized using the imaging measurement method established in this paper.

Key words： thermal expansion; image measurement; edge detection; image calibration

Cite this article

Qiong Zhou , Qi An . Edge detection of steel plates at high temperature using image measurement[J]. Frontiers of Mechanical Engineering, 2009 , 4(1) : 77 -82 . DOI: 10.1007/s11465-009-0013-1

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