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

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	Feature extraction method of wind turbine blade surface scratches based on image processing
	Li, Wanrun1,2,3 ; Zhang, Jianfei 1; Wang, Xueping1,2,3 ; Du, Yongfeng1,2,3
	2020-12-28
发表期刊	Taiyangneng Xuebao/Acta Energiae Solaris Sinica
ISSN	02540096
卷号	41 期号:12 页码:278-287
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.
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
收录类别	EI
语种	中文
出版者	Science Press
EI入藏号	20210309770898
EI主题词	Binary images
EI分类号	615.8 Wind Power (Before 1993, use code 611 ) ; 617 Turbines and Steam Turbines ; 703.2 Electric Filters ; 723.2 Data Processing and Image Processing ; 731 Automatic Control Principles and Applications ; 921.6 Numerical Methods
文献类型	期刊论文
条目标识符	https://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.Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Civil Engineering, 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
第一作者单位	兰州理工大学; 土木工程学院
第一作者的第一单位	兰州理工大学
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.