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Proceedings Paper

Calibrators measurement system for headlamp tester of motor vehicle base on machine vision
Author(s): Yue Pan; Fan Zhang; Xi-ping Xu; Zhe Zheng
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Paper Abstract

With the development of photoelectric detection technology, machine vision has a wider use in the field of industry. The paper mainly introduces auto lamps tester calibrator measuring system, of which CCD image sampling system is the core. Also, it shows the measuring principle of optical axial angle and light intensity, and proves the linear relationship between calibrator’s facula illumination and image plane illumination. The paper provides an important specification of CCD imaging system. Image processing by MATLAB can get flare’s geometric midpoint and average gray level. By fitting the statistics via the method of the least square, we can get regression equation of illumination and gray level. It analyzes the error of experimental result of measurement system, and gives the standard uncertainty of synthesis and the resource of optical axial angle. Optical axial angle’s average measuring accuracy is controlled within 40′′. The whole testing process uses digital means instead of artificial factors, which has higher accuracy, more repeatability and better mentality than any other measuring systems.

Paper Details

Date Published: 18 September 2014
PDF: 7 pages
Proc. SPIE 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 92822P (18 September 2014); doi: 10.1117/12.2068695
Show Author Affiliations
Yue Pan, Changchun Univ. of Science and Technology (China)
Fan Zhang, Jiangsu Institute of Metrology (China)
Xi-ping Xu, Changchun Univ. of Science and Technology (China)
Zhe Zheng, Bai Cheng Ordnance Test Ctr. of China (China)


Published in SPIE Proceedings Vol. 9282:
7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Wei Gao, Editor(s)

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