ELMs filaments extraction on divertor visible high-speed camera system of EAST

doi:10.1088/1748-0221/17/10/P10016

	ELMs filaments extraction on divertor visible high-speed camera system of EAST
	Yan, Hailong 1,2; Han, Xiaofeng 1; Yang, Jianhua 1; Hu, Jiahui 1; Wang, Jichao 1,2
刊名	JOURNAL OF INSTRUMENTATION
	2022-10-01
卷号	17
关键词	Plasma diagnostics-high speed photography Data processing methods Pattern recognition cluster finding calibration and fitting methods
ISSN号	1748-0221
DOI	10.1088/1748-0221/17/10/P10016
通讯作者	Han, Xiaofeng(hxf@ipp.ac.cn)
英文摘要	In order to study the ELMs filamentary structure generated by plasma in H-mode, a tangential visible camera system was established on EAST Tokamak. However, the obtained ELMs filamentary structure cannot be accurately and quickly identified, which is not conducive to the study of ELMs filamentary structure. In this paper, the ELMs filamentary structure is preliminarily extracted by the background subtraction method. The background modeling method adopts multi-frame averaging followed by contrast stretching of the image. Although the ELMs filamentary structure can be clearly seen in the obtained image, there exists a lot of noise, so further extraction of the ELMs filamentary structure is needed. In this paper, the neural network model U-Net is used for image segmentation. Compared with the traditional threshold segmentation, the ELMs filamentary structure and noise can be accurately distinguished, and ELMs filaments are better extracted. The results show that the method presented in this paper is suitable for the extraction of ELMs filamentary structure and beneficial to the study of ELMs filamentary structure.
资助项目	National Natural Science Foundation of China[12075281] ; projects of collaborative innovation of the Hefei Science Center, CAS[2021HSC-CIP007] ; National Magnetic Confinement Fusion Research Program of China[2017YFE0301104]
WOS研究方向	Instruments & Instrumentation
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000869716000008
资助机构	National Natural Science Foundation of China ; projects of collaborative innovation of the Hefei Science Center, CAS ; National Magnetic Confinement Fusion Research Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129883]
专题	中国科学院合肥物质科学研究院
通讯作者	Han, Xiaofeng
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Yan, Hailong,Han, Xiaofeng,Yang, Jianhua,et al. ELMs filaments extraction on divertor visible high-speed camera system of EAST[J]. JOURNAL OF INSTRUMENTATION,2022,17.
APA	Yan, Hailong,Han, Xiaofeng,Yang, Jianhua,Hu, Jiahui,&Wang, Jichao.(2022).ELMs filaments extraction on divertor visible high-speed camera system of EAST.JOURNAL OF INSTRUMENTATION,17.
MLA	Yan, Hailong,et al."ELMs filaments extraction on divertor visible high-speed camera system of EAST".JOURNAL OF INSTRUMENTATION 17(2022).