High-resolution Solar Image Registration Using Unsupervised Deep Learning
文献类型:期刊论文
作者 | Zhang, Hao4; Liang, Bo4; Yan XL(闫晓理)2,3![]() ![]() |
刊名 | ASTROPHYSICAL JOURNAL
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出版日期 | 2025-08-01 |
卷号 | 988期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/adeb77 |
产权排序 | 第2完成单位 |
文献子类 | Article |
英文摘要 | High-resolution solar images captured at different wavelengths are essential for understanding solar activity. However, such images often exhibit geometric discrepancies due to varying instrument resolutions and observation conditions, making image registration a critical preprocessing step. In this study, we propose an unsupervised deep learning-based framework named hourGlass and haRdnEt (GRE) for accurate solar image registration. The method detects keypoints in both the reference and moving images, extracts local feature descriptors, performs bidirectional matching to establish reliable correspondences, and estimates affine transformation parameters to align the images. The proposed framework was evaluated on quiet Sun images from the New Vacuum Solar Telescope and active region (AR) images from the Goode Solar Telescope, covering both photospheric and chromospheric features. A synthetic data set with known transformations was also used to assess registration accuracy under controlled conditions. Registration performance was quantitatively measured using mutual information (MI) and structural similarity index (SSIM) methods, and results were compared with those obtained using the scale-invariant feature transform and intensity-based two-step methods. The experimental results demonstrate that the proposed method achieves accurate registration across different solar features and imaging scenarios. The method maintains structural consistency in both AR and quiet Sun observations, including time-series data, with MI and SSIM improvements over baseline methods. The approach provides a validated tool for solar image alignment, suitable for further solar physics studies. |
学科主题 | 天文学 ; 太阳与太阳系 ; 计算机科学技术 ; 人工智能 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | New Vacuum Solar Telescope (NVST) team; Open Fund of the Yunnan Key Laboratory of Computer Technologies Application |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
WOS记录号 | WOS:001538578900001 |
出版者 | IOP Publishing Ltd |
资助机构 | New Vacuum Solar Telescope (NVST) team ; Open Fund of the Yunnan Key Laboratory of Computer Technologies Application |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/28475] ![]() |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Feng, Song |
作者单位 | 1.Institute of Space Science and Applied Technology, Harbin Institute of Technology, Shenzhen, Guangdong 518055, People’s Republic of China 2.Yunnan Key Laboratory of the Solar Physics and Space Science, Kunming 650216, People’s Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 4.Faculty of Information Engineering and Automation, Kunming University of Science and Technology and Yunnan Key Laboratory of Computer Technologies Application, Kunming 650500, People’s Republic of China; feng.song@kust.edu.cn; |
推荐引用方式 GB/T 7714 | Zhang, Hao,Liang, Bo,Yan XL,et al. High-resolution Solar Image Registration Using Unsupervised Deep Learning[J]. ASTROPHYSICAL JOURNAL,2025,988(2). |
APA | Zhang, Hao.,Liang, Bo.,闫晓理.,Feng, Song.,Yuan, Ding.,...&Dai, Wei.(2025).High-resolution Solar Image Registration Using Unsupervised Deep Learning.ASTROPHYSICAL JOURNAL,988(2). |
MLA | Zhang, Hao,et al."High-resolution Solar Image Registration Using Unsupervised Deep Learning".ASTROPHYSICAL JOURNAL 988.2(2025). |
入库方式: OAI收割
来源:云南天文台
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