Feature extraction method of wind turbine blade surface scratches based on image processing

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Feature extraction method of wind turbine blade surface scratches based on image processing
	Li, Wanrun 1,2,3; Zhang, Jianfei 2; Wang, Xueping 1,2,3; Du, Yongfeng 1,2,3
刊名	Taiyangneng Xuebao/Acta Energiae Solaris Sinica
	2020-12-28
卷号	41 期号:12 页码:278-287
关键词	Automation Corrosion Gabor filters Image enhancement Image segmentation Interpolation Turbine components Turbomachine blades Wind turbines Corrosion threshold Feature extraction methods Gradient thresholds Information entropy Morphological opening Optimum threshold Spline interpolation Wind turbine blades
ISSN号	02540096
英文摘要	The image segmentation,information extraction and the definition of binary image are the key points in automatic scratch detection system. The Gabor filter is used to enhance the scratched image of the blade surface,and the optimal parameters of the Gabor filter are determined by information entropy function. A gradient threshold method,which combines the three-spline interpolation operator with the Ostu threshold,is proposed to analyze the scratch image,and the image segmentation optimum threshold is determined by the edge density function of the processed image. The holes and the miscellaneous points in the binary image of scratched are further optimized by the morphological opening operation. The optimum corrosion thresholds are determined by using the Brenner gradient function. Finally the binary image of scratches with little impurity and high edge definition are obtained. It is showed that the proposed method can be used to identify the scratches on the surface of the blade,which will provide the foundation for automatic identification of scratches. © 2020, Solar Energy Periodical Office Co., Ltd. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150665]
专题	土木工程学院基建规划处
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Wanrun,Zhang, Jianfei,Wang, Xueping,et al. Feature extraction method of wind turbine blade surface scratches based on image processing[J]. Taiyangneng Xuebao/Acta Energiae Solaris Sinica,2020,41(12):278-287.
APA	Li, Wanrun,Zhang, Jianfei,Wang, Xueping,&Du, Yongfeng.(2020).Feature extraction method of wind turbine blade surface scratches based on image processing.Taiyangneng Xuebao/Acta Energiae Solaris Sinica,41(12),278-287.
MLA	Li, Wanrun,et al."Feature extraction method of wind turbine blade surface scratches based on image processing".Taiyangneng Xuebao/Acta Energiae Solaris Sinica 41.12(2020):278-287.