Automatic detection and extraction algorithm of coronal loops based on match filter and oriented directivity
文献类型:期刊论文
作者 | Song ZM(宋智明)1,2; Yan XL(闫晓理)2; Qu ZQ(屈中权)2; Li Hong-Bo3 |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
出版日期 | 2019-12-01 |
卷号 | 490期号:4页码:5567-5584 |
ISSN号 | 0035-8711 |
关键词 | techniques: image processing Sun: corona Sun: magnetic field |
DOI | 10.1093/mnras/stz2932 |
产权排序 | 第2完成单位 |
文献子类 | Article |
英文摘要 | In this paper, an efficient algorithm is developed to automatically detect and extract coronal loops. First of all, in the algorithm, three characteristics associated with coronal loops are used to construct a match filter able to enhance the loops. Secondly, the method combining a high-pass filter (unsharp-mask enhancement) with a global threshold is used to further enhance and segment the loops. Thirdly, to extract every individual coronal loop and obtain their parameters (the 2D projected space coordinates and lengths) from the segmented loops, a clustering method of the pixels with approximate local direction and connected domain is further used. Fourthly, to evaluate the performance of the developed algorithm, images observed by the Transition Region and Coronal Explorer (TRACE), the Atmospheric Imaging Assembly (AIA) of the Solar Dynamics Observatory (SDO) and the High-Resolution Coronal Imager (Hi-C) are used, and comparison experiments between the existing algorithms and the developed algorithm are performed. Finally, it is found that the developed algorithm is commensurate with the two most promising algorithms, oriented coronal curved loop tracing (OCCULT) and its improved version, OCCULT-2, in performance. Therefore, for scientific applications associated with coronal loops, the developed algorithm will be a powerful tool. |
学科主题 | 天文学 ; 太阳与太阳系 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
WOS关键词 | TRANSITION-REGION ; MAGNETIC LOOPS ; TEMPERATURE ; TRANSFORM |
资助项目 | National Natural Science Foundation of China[11527804] ; National Natural Science Foundation of China[11703087] ; National Natural Science Foundation of China[U1931206] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000504000300081 |
资助机构 | National Natural Science Foundation of China[11527804, 11703087, U1931206] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/22023] |
专题 | 云南天文台_光纤阵列太阳光学望远镜研究组 |
通讯作者 | Song ZM(宋智明) |
作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, China 2.Yunnan Observatories, Chinese Academy of Science, Kunming, Yunnan 650216, China 3.Institute of Space Physics, Luoyang Normal University, Luoyang, 471934, China |
推荐引用方式 GB/T 7714 | Song ZM,Yan XL,Qu ZQ,et al. Automatic detection and extraction algorithm of coronal loops based on match filter and oriented directivity[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,490(4):5567-5584. |
APA | Song ZM,Yan XL,Qu ZQ,&Li Hong-Bo.(2019).Automatic detection and extraction algorithm of coronal loops based on match filter and oriented directivity.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,490(4),5567-5584. |
MLA | Song ZM,et al."Automatic detection and extraction algorithm of coronal loops based on match filter and oriented directivity".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 490.4(2019):5567-5584. |
入库方式: OAI收割
来源:云南天文台
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。