Automated Detection of Low-Contrast Solar Features Using the Phase-Congruency Algorithm
文献类型：期刊论文
| 作者 | Feng, S1,2,3; Xu Z(徐稚)4 ; Wang, F1; Deng, H1; Yang, YF1,2,3; Ji, KF1
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| 刊名 | SOLAR PHYSICS
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| 出版日期 | 2014-10 |
| 卷号 | 289期号:10页码:3985-3994 |
| 关键词 | Corona, structures Sunspots, umbrae Image processing Phase congruency |
| ISSN号 | 0038-0938 |
| 产权排序 | 第四完成单位 |
| 通讯作者 | Ji, KF (reprint author), Kunming Univ Sci & Technol, Yunnan Key Lab Comp Technol Applicat, Fac Informat Engn & Automat, Kunming 650500, Peoples R China. |
| 英文摘要 | We propose a new feature-detection technique based on phase-congruency (PC) measurements to automatically recognize or enhance faint features in solar observations, such as off-limb coronal loops and umbral dots. Compared with other feature-detection methods that are based on gradient illuminance and imaging filtering, PC-based measurements are particular efficient for recognizing faint features, which generally have a low-intensity contrast to their surroundings. In the present article, we carry out a PC-based measurement of the local weighted mean phase angle (LWMPA) at each point in an image to indicate or highlight low-contrast features. We first used artificial images to check the detection accuracy and sensitivity to the noise of this approach. Subsequently, we applied this approach to an EUV observation obtained by the Solar Dynamics Observatory/Atmospheric Imaging Assembly to highlight off-limb coronal loops, and a photospheric observation obtained by the Hinode/Solar Optical Telescope to recognize faint dots within the cores of sunspots and pores. The results illustrate that this PC-based measurement of the LWMPA is a robust detection method for faint structures in solar observations. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | IMAGE-PROCESSING TECHNIQUES ; UMBRAL DOTS ; OPTICAL TELESCOPE ; FINE-STRUCTURE ; BRIGHT POINTS ; CORONAL LOOPS ; HINODE ; RECOGNITION ; REGIONS ; SYSTEM |
| 收录类别 | SCI |
| 原文出处 | http://link.springer.com/article/10.1007%2Fs11207-014-0538-2 |
| 语种 | 英语 |
| WOS记录号 | WOS:000339384900019 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4704]  |
| 专题 | 云南天文台_抚仙湖太阳观测站 |
| 作者单位 | 1.Yunnan Key Laboratory of Computer Technology Application, Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650500, China 2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China 3.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing, 210093, China 4.Yunnan Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Kunming, 650011, China |
| 推荐引用方式 GB/T 7714 | Feng, S,Xu Z,Wang, F,et al. Automated Detection of Low-Contrast Solar Features Using the Phase-Congruency Algorithm[J]. SOLAR PHYSICS,2014,289(10):3985-3994. |
| APA | Feng, S,Xu Z,Wang, F,Deng, H,Yang, YF,&Ji, KF.(2014).Automated Detection of Low-Contrast Solar Features Using the Phase-Congruency Algorithm.SOLAR PHYSICS,289(10),3985-3994. |
| MLA | Feng, S,et al."Automated Detection of Low-Contrast Solar Features Using the Phase-Congruency Algorithm".SOLAR PHYSICS 289.10(2014):3985-3994. |
入库方式： OAI收割
来源：云南天文台
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