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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 20 — Jul. 10, 2011
  • pp: 3658–3665

Vision method of inspecting missing fastening components in high-speed railway

Haibo Zhang, Jinfeng Yang, Wei Tao, and Hui Zhao  »View Author Affiliations


Applied Optics, Vol. 50, Issue 20, pp. 3658-3665 (2011)
http://dx.doi.org/10.1364/AO.50.003658


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Abstract

The increasing train speed on railways generates an urgent need for more powerful automatic inspection of railway tracks, including real-time fastening component inspection. To obtain better high-speed performance with lower cost, this paper has proposed a novel structured light method based on motion image (SLMMI) for moving object inspection. The motion images in the proposed method are insensitive to motion, abundant with information, and easy to process, resulting in a low performance requirement of the hardware. Compared to the conventional unstructured light method and structured light method, the proposed method inherits the virtues of both thus offering a fresh perspective when inspecting missing fastening components on high-speed railways. By using the SLMMI and the recognition method based on a neural network, the experimental results yield good performance in terms of speed and accuracy. Furthermore, the robustness of the proposed method is also discussed and simulated by adding typical interferences, such as ambient light, vibration, and obstacles.

© 2011 Optical Society of America

OCIS Codes
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(150.3040) Machine vision : Industrial inspection
(100.3008) Image processing : Image recognition, algorithms and filters

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: April 12, 2011
Revised Manuscript: May 20, 2011
Manuscript Accepted: May 20, 2011
Published: July 8, 2011

Citation
Haibo Zhang, Jinfeng Yang, Wei Tao, and Hui Zhao, "Vision method of inspecting missing fastening components in high-speed railway," Appl. Opt. 50, 3658-3665 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-20-3658


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