Enhancing coronal structures with radial local multi-scale filter
文献类型:期刊论文
作者 | Qiang, Zhenping1,2; Bai, Xianyong2; Ji KF(季凯帆)3; Liu, Hui3; Shang, Zhenhong4; Liu H(刘辉) |
刊名 | NEW ASTRONOMY |
出版日期 | 2020-08-01 |
卷号 | 79页码:12 |
ISSN号 | 1384-1076 |
关键词 | Coronal enhancement Image processing Radial local multi-scale filter Solar corona |
DOI | 10.1016/j.newast.2020.101383 |
产权排序 | 第3完成单位 |
文献子类 | Article |
英文摘要 | Images of the corona contain information over a wide range of spatial scales and various structures such as coronal holes, coronal loops, coronal mass ejections (CMEs), and helmet streamers with differences in brightness. Therefore, processing these images is important for determining various types of information. However, it is very difficult to elucidate the intricate structure of the corona because of the steep radial gradient in terms of brightness and the large differences in brightness within local areas of coronal images. In this study, we present a filter inspired by the normalizing-radial-graded filter, which we call the radial local multi-scale filter (RLMF). The RLMF method extracts radial vectors and performs local multi-scale filtering based on each vector, before normalizing the vector in order to enhance coronal images. This method facilitates the enhancement of large-scale structural characteristics and fine details in low contrast regions. To demonstrate the power of the RLMF, we applied the proposed method to Large Angle and Spectrometric Coronagraph C2 and K-Coronagraph observations. The RLMF method more clearly revealed the fine details of the corona and CMEs compared with the original observations. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳与太阳系其他学科 ; 计算机科学技术 |
URL标识 | 查看原文 |
出版地 | RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS |
资助项目 | National Natural Science Foundation of China[11603016] ; National Natural Science Foundation of China[11873027] ; National Natural Science Foundation of China[11773072] ; National Natural Science Foundation of China[11573012] ; Key Scientific Research Foundation Project of Southwest Forestry University[111827] ; Open Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA201909] ; Beijing Municipal Science and Technology Project[Z181100002918004] ; NASA LWS[NNX15AB70G] ; Astronomical Big Data Joint Research Center ; National Science Foundation |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000531097200002 |
资助机构 | National Natural Science Foundation of China[11603016, 11873027, 11773072, 11573012] ; Key Scientific Research Foundation Project of Southwest Forestry University[111827] ; Open Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA201909] ; Beijing Municipal Science and Technology Project[Z181100002918004] ; NASA LWS[NNX15AB70G] ; Astronomical Big Data Joint Research Center ; National Science Foundation |
源URL | [http://ir.ynao.ac.cn/handle/114a53/23402] |
专题 | 天文技术实验室 |
通讯作者 | Qiang, Zhenping |
作者单位 | 1.College of Big Data and Intelligent Engineering, Southwest Forestry University, Kunming 650224, China 2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, China 3.Yunnan Observatory, Chinese Academy of Sciences, Kunming, 650216 China 4.Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650504 China |
推荐引用方式 GB/T 7714 | Qiang, Zhenping,Bai, Xianyong,Ji KF,et al. Enhancing coronal structures with radial local multi-scale filter[J]. NEW ASTRONOMY,2020,79:12. |
APA | Qiang, Zhenping,Bai, Xianyong,Ji KF,Liu, Hui,Shang, Zhenhong,&Liu H.(2020).Enhancing coronal structures with radial local multi-scale filter.NEW ASTRONOMY,79,12. |
MLA | Qiang, Zhenping,et al."Enhancing coronal structures with radial local multi-scale filter".NEW ASTRONOMY 79(2020):12. |
入库方式: OAI收割
来源:云南天文台
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