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An Efficient Direction Field-Based Method for the Detection of Fasteners on High-Speed Railways
School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
* Author to whom correspondence should be addressed.
Received: 28 June 2011; in revised form: 14 July 2011 / Accepted: 15 July 2011 / Published: 25 July 2011
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
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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.
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.
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.