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	Vision system using linear CCD cameras in fluorescent magnetic particle inspection of axles of railway wheelsets
	Hao, HW ; Li, LM ; Deng, YH
	2010-05-10 ; 2010-05-10
会议名称	Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV ; Conference on Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV ; San Diego, CA ; Web of Science ; INSPEC
关键词	fluorescent magnetic particle axle of railway wheelset linear CCD image processing crack identification Engineering, Civil Instruments & Instrumentation Materials Science, Characterization & Testing Optics
中文摘要	Automatic magnetic particle inspection based vision system using CCD camera is a new development of magnetic particle inspection. A vision system using linear CCD cameras in semiautomatic fluorescent magnetic particle inspection of axles of railway wheelsets is presented in this paper. The system includes four linear CCD cameras, a PCI data acquisition & logic control card, and an industrial computer. The unique characteristic of striation induced by UV light flicker in scanning image acquired by linear CCD camera are investigated, and some digital image processing methods for images of magnetic particle indications are designed to identify the cracks, including image pre-processing using wavelet, edge detection based connected region using Candy operator and double thresholds. The experimental results show that the system can detect the article cracks effectively, and may improve inspection quality highly and increase productivity practically.
会议录出版者	SPIE-INT SOC OPTICAL ENGINEERING ; BELLINGHAM ; 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18741]
专题	清华大学
推荐引用方式 GB/T 7714	Hao, HW,Li, LM,Deng, YH. Vision system using linear CCD cameras in fluorescent magnetic particle inspection of axles of railway wheelsets[C]. 见:Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV, Conference on Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV, San Diego, CA, Web of Science, INSPEC.

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