CCD calibration method for wheel set wear online measurement

Jiang Chen; Kaihua Wu

doi:10.1117/12.870564

11 November 2010 CCD calibration method for wheel set wear online measurement

Jiang Chen, Kaihua Wu

Proceedings Volume 7855, Optical Metrology and Inspection for Industrial Applications; 785521 (2010) https://doi.org/10.1117/12.870564
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Jiang Chen and Kaihua Wu "CCD calibration method for wheel set wear online measurement", Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 785521 (11 November 2010); https://doi.org/10.1117/12.870564

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available