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Proceedings Paper

CCD calibration method for wheel set wear online measurement
Author(s): Jiang Chen; Kaihua Wu
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Paper Abstract

CCD calibration is carried out for wheel set wear online measurement. Calibration precision influences the accuracy of wheel set measurement. A CCD calibration method is designed based on perspective projection of pinhole camera and iterative algorithm. Space angles and object distance of CCD parameters are obtained by CCD calibration. Transformation relation between physical coordinates and pixel coordinates is determined by these two CCD parameters. Experimental results showed that space angle achieved a error of 0.1° and object distance achieved a error of 2 mm. The calibration method meet accuracy demands of wheel set wear measurement.

Paper Details

Date Published: 12 November 2010
PDF: 7 pages
Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 785521 (12 November 2010); doi: 10.1117/12.870564
Show Author Affiliations
Jiang Chen, Hangzhou Dianzi Univ. (China)
Kaihua Wu, Hangzhou Dianzi Univ. (China)


Published in SPIE Proceedings Vol. 7855:
Optical Metrology and Inspection for Industrial Applications
Kevin Harding; Peisen S. Huang; Toru Yoshizawa, Editor(s)

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