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Proceedings Paper

Study of automatic surface inspection for cold rolled steel strip
Author(s): Zelin Xu
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Paper Abstract

The paper describes a feasibility study of on-line inspection of visible defects in the surface of cold rolled steel strip by a experimental inspection system. The system incorporates CCD linear image sensor and illumination placed in specular reflection direction . To cope with the wide variety of different defect mixed with lot of noise and continuous changing of environment, the paper propose a segmentation algorithm using a special two dimensional filter and adaptive threshold varying with environment to get a quite accurate defect binary image. Defect deleanation and classification algorithm analyses defects, removes noise and extracts features of defects, then classify them by statistics decision tree.

Paper Details

Date Published: 1 July 1990
PDF: 2 pages
Proc. SPIE 1230, International Conference on Optoelectronic Science and Engineering '90, 12302P (1 July 1990); doi: 10.1117/12.2294734
Show Author Affiliations
Zelin Xu, Changchun Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 1230:
International Conference on Optoelectronic Science and Engineering '90
DaHeng Wang, Editor(s)

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