Sensors 2011, 11(8), 7364-7381; doi:10.3390/s110807364
Article

An Efficient Direction Field-Based Method for the Detection of Fasteners on High-Speed Railways

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Received: 28 June 2011; in revised form: 14 July 2011 / Accepted: 15 July 2011 / Published: 25 July 2011
(This article belongs to the Special Issue Biomimetic Sensors, Actuators and Integrated Systems)
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Abstract: Railway inspection is an important task in railway maintenance to ensure safety. The fastener is a major part of the railway which fastens the tracks to the ground. The current article presents an efficient method to detect fasteners on the basis of image processing and pattern recognition techniques, which can be used to detect the absence of fasteners on the corresponding track in high-speed(up to 400 km/h). The Direction Field is extracted as the feature descriptor for recognition. In addition, the appropriate weight coefficient matrix is presented for robust and rapid matching in a complex environment. Experimental results are presented to show that the proposed method is computation efficient and robust for the detection of fasteners in a complex environment. Through the practical device fixed on the track inspection train, enough fastener samples are obtained, and the feasibility of the method is verified at 400 km/h.
Keywords: machine vision; fastener recognition; Direction Field (DF); LDA; pattern matching; VOSSLOH fastener
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Yang, J.; Tao, W.; Liu, M.; Zhang, Y.; Zhang, H.; Zhao, H. An Efficient Direction Field-Based Method for the Detection of Fasteners on High-Speed Railways. Sensors 2011, 11, 7364-7381.

AMA Style

Yang J, Tao W, Liu M, Zhang Y, Zhang H, Zhao H. An Efficient Direction Field-Based Method for the Detection of Fasteners on High-Speed Railways. Sensors. 2011; 11(8):7364-7381.

Chicago/Turabian Style

Yang, Jinfeng; Tao, Wei; Liu, Manhua; Zhang, Yongjie; Zhang, Haibo; Zhao, Hui. 2011. "An Efficient Direction Field-Based Method for the Detection of Fasteners on High-Speed Railways." Sensors 11, no. 8: 7364-7381.


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