Subpixel-based Bidirectional Distortion Correction for Two-dimensional Astronomical Fiber Spectral Images
文献类型：期刊论文
| 作者 | Hu, Dong-Sheng4,5; Chen, Chuan-Qi4,5; Yang, Hao-Jie4,5; Wang, An-Zhi4,5; Yue, Gang4,5; Gan, Zhao-Xv4,5; Chen, Xu-Dong4,5; Yan, Yun-Xiang3,4,5; Zhong Y(钟悦)2 ; Xu Z(徐稚)2
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2025-03-01 |
| 卷号 | 25期号:3 |
| 关键词 | techniques: miscellaneous techniques: image processing techniques: spectroscopic methods: miscellaneous |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/adb136 |
| 产权排序 | 第4完成单位 |
| 文献子类 | Article |
| 英文摘要 | This paper proposes a subpixel transformation method to correct Keystone and Smile distortions in fiber spectral images from the Fiber Arrayed Solar Optical Telescope. These distortions affect the spatial and spectral positions, degrading resolution and accuracy. To correct Keystone distortion, we use a local summation and peak-finding method to locate central horizontal coordinates, calculate shifting values, and straighten the curves. For Smile distortion, we use quartic polynomial fitting based on absorption lines at different wavelengths. This technique preserves subpixel components, redistributes pixel values, and interpolates non-fiber portions, rectifying the spectra for accurate analysis. The method can also be applied to other astronomical projects like Large Sky Area Multi-Object Fiber Spectroscopic Telescope, enhancing the accuracy and reliability of spectral data in various astronomical studies. |
| 学科主题 | 天文学 ; 天文学其他学科 ; 物理学 ; 光学 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| WOS关键词 | SYSTEM |
| 资助项目 | National Natural Science Foundation of China (NSFC)[U2031132]; National Natural Science Foundation of China (NSFC)[U1931206]; Chinese Academy of Sciences (CAS)[U2031132]; Chinese Academy of Sciences (CAS)[U1931206] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001438554700001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China (NSFC)[U2031132, U1931206] ; Chinese Academy of Sciences (CAS)[U2031132, U1931206] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28191]  |
| 专题 | 云南天文台_其他 云南天文台_抚仙湖太阳观测站 无名山观测站 |
| 作者单位 | 1.State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang 621000, China 2.Yunnan Observatory of Chinese Academy of Sciences, Kunming 650011, China; 3.Qingdao Innovation and Development Center of Harbin Engineering University, Qingdao 266000, China; 4.Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China; 5.Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China; |
| 推荐引用方式 GB/T 7714 | Hu, Dong-Sheng,Chen, Chuan-Qi,Yang, Hao-Jie,et al. Subpixel-based Bidirectional Distortion Correction for Two-dimensional Astronomical Fiber Spectral Images[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2025,25(3). |
| APA | Hu, Dong-Sheng.,Chen, Chuan-Qi.,Yang, Hao-Jie.,Wang, An-Zhi.,Yue, Gang.,...&Sun, Wei-Min.(2025).Subpixel-based Bidirectional Distortion Correction for Two-dimensional Astronomical Fiber Spectral Images.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,25(3). |
| MLA | Hu, Dong-Sheng,et al."Subpixel-based Bidirectional Distortion Correction for Two-dimensional Astronomical Fiber Spectral Images".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 25.3(2025). |
入库方式： OAI收割
来源：云南天文台
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