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Lucky imaging method based on wavelet analysis
Fan, Wending1; Li, Binhua1,2; Li, Junwu1; Zhang XL(张西亮)3
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2022-09-10
卷号516期号:2页码:2196-2203
DOI10.1093/mnras/stac2303
产权排序第3完成单位
收录类别SCI ; EI
关键词atmospheric effects methods: data analysis techniques: high angular resolution techniques: image processing
摘要

Lucky imaging is able to reconstruct high-resolution images effectively from astronomical images affected by atmospheric turbulence. Its image reconstruction process can be carried out in the spatial domain or in the Fourier domain. This paper extend the lucky imaging technique to the wavelet domain, and proposes a lucky imaging method based on wavelet analysis. First, the short-exposure astronomical images are decomposed into four subbands by using the bior3.7 wavelet basis. Then, for the low-frequency subbands, the components with higher wavelet coefficients are extracted in a given selection ratio for fusion. For the high-frequency subbands in the horizontal, vertical, and diagonal directions, taking the whole subband as a unit, the subbands with smaller sums of wavelet coefficients are extracted for stacking in a given selection ratio. Finally, an inverse wavelet transform is performed on the four fused subbands to reconstruct the resultant image. Experimental results show that the proposed algorithm can better extract the details hidden in the original short-exposure astronomical images and obtain a higher-resolution image, and that it has a good image restoration effect.

资助项目National Natural Science Foundation of China[11673009]
项目资助者National Natural Science Foundation of China[11673009]
语种英语
学科领域计算机科学技术 ; 计算机应用
学科门类工学 ; 工学::计算机科学与技术(可授工学、理学学位)
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS记录号WOS:000852389700011
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
EI入藏号20232114136579
EI主题词Wavelet analysis
EI分类号443.1 Atmospheric Properties - 631.1 Fluid Flow, General - 921 Mathematics - 921.3 Mathematical Transformations
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/25563
专题南方基地
通讯作者Fan, Wending
作者单位1.Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650500, China;
2.Key Laboratory of Applications of Computer Technologies of the Yunnan Province, Kunming University of Science and Technology, Kunming, 650500, China;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, China
推荐引用方式
GB/T 7714
Fan, Wending,Li, Binhua,Li, Junwu,et al. Lucky imaging method based on wavelet analysis[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,516(2):2196-2203.
APA Fan, Wending,Li, Binhua,Li, Junwu,&Zhang XL.(2022).Lucky imaging method based on wavelet analysis.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,516(2),2196-2203.
MLA Fan, Wending,et al."Lucky imaging method based on wavelet analysis".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 516.2(2022):2196-2203.
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