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Proceedings Paper

A new method of center orientation for glass thickness image processing
Author(s): Ni Yang; Yu-tian Wang
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Paper Abstract

The on-line float glass thickness measurement system is based on digital image technology. LCCD is employed to capture a set of images of the delivering glass ribbon in real-time, and accordingly the measured thickness computation is carried out through the center orientated images. A new method for extracting the central line of the glass thickness image has been put forward for the blurring edge and distortion of noise problems occurred in the thickness image. Firstly, Canny algorithm is employed to detect the light-stripe edge precisely. Secondly, an improved barycenter method is employed to acquire each stripe image center accurately within the edge region. Comparing to other center orientation algorithms, the improved barycenter method can remove the image noise more effectively. The experiment results indicate that the extraction precision can be improved to 0.1% and the relative error of the thin glass plates is less than 0.14%, therefore it provides a thickness measurement system in high precision and high stability.

Paper Details

Date Published: 31 December 2008
PDF: 6 pages
Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71303D (31 December 2008); doi: 10.1117/12.819680
Show Author Affiliations
Ni Yang, Yanshan Univ. (China)
Yu-tian Wang, Yanshan Univ. (China)

Published in SPIE Proceedings Vol. 7130:
Fourth International Symposium on Precision Mechanical Measurements
Yetai Fei; Kuang-Chao Fan; Rongsheng Lu, Editor(s)

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