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Proceedings Paper

Vignetting correction for IRFPA-based train axle temperature measurement system
Author(s): Guangting Liu; Dayuan Yan; Xiaoming Hu; Hao Zhang; Lei Zhu
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Paper Abstract

Using thermal infrared imaging to obtain the temperature distribution of the train wheel sets is a new and promising temperature measurement method. The accuracy and precision of the method are suffered from vignetting. In this paper, the vignetting coefficient function has been derived and imaging system calibration is introduced to compensate the measurement result error caused by the inconsistent of the optic center and the image center. The vignetting correction is implemented on the hardware platform based on FPGA. Experimental results demonstrate that vignetting correction enhance the accuracy of measurement system.

Paper Details

Date Published: 28 November 2011
PDF: 8 pages
Proc. SPIE 8200, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology, 820006 (28 November 2011); doi: 10.1117/12.904656
Show Author Affiliations
Guangting Liu, Beijing Institute of Technology (China)
Dayuan Yan, Beijing Institute of Technology (China)
Xiaoming Hu, Beijing Institute of Technology (China)
Hao Zhang, Beijing Institute of Technology (China)
Lei Zhu, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 8200:
2011 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology
Toru Yoshizawa; Ping Wei; Jesse Zheng, Editor(s)

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