FLAT-FIELDING OF SOLAR H alpha OBSERVATIONS BASED ON THE MAXIMUM CORRENTROPY CRITERION

	FLAT-FIELDING OF SOLAR H alpha OBSERVATIONS BASED ON THE MAXIMUM CORRENTROPY CRITERION
	Xu, Gao-Gui 1; Zheng, Sheng 1; Lin, Gang-Hua2 ; Wang, Xiao-Fan2
刊名	ASTROPHYSICAL JOURNAL
	2016-08-20
卷号	827 期号:2
关键词	astroparticle physics methods: observational Sun: photosphere techniques: image processing
英文摘要	The flat-field CCD calibration method of Kuhn et al. (KLL) is an efficient method for flat-fielding. However, since it depends on the minimum of the sum of squares error (SSE), its solution is sensitive to noise, especially non-Gaussian noise. In this paper, a new algorithm is proposed to determine the flat field. The idea is to change the criterion of gain estimate from SSE to the maximum correntropy. The result of a test on simulated data demonstrates that our method has a higher accuracy and a faster convergence than KLL's and Chae's. It has been found that the method effectively suppresses noise, especially in the case of typical non-Gaussian noise. And the computing time of our algorithm is the shortest.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
收录类别	SCI
语种	英语
WOS记录号	WOS:000384001600049
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6886]
专题	国家天文台_太阳物理研究部
作者单位	1.China Three Gorges Univ, Coll Sci, Yichang 443002, Hubei, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Xu, Gao-Gui,Zheng, Sheng,Lin, Gang-Hua,et al. FLAT-FIELDING OF SOLAR H alpha OBSERVATIONS BASED ON THE MAXIMUM CORRENTROPY CRITERION[J]. ASTROPHYSICAL JOURNAL,2016,827(2).
APA	Xu, Gao-Gui,Zheng, Sheng,Lin, Gang-Hua,&Wang, Xiao-Fan.(2016).FLAT-FIELDING OF SOLAR H alpha OBSERVATIONS BASED ON THE MAXIMUM CORRENTROPY CRITERION.ASTROPHYSICAL JOURNAL,827(2).
MLA	Xu, Gao-Gui,et al."FLAT-FIELDING OF SOLAR H alpha OBSERVATIONS BASED ON THE MAXIMUM CORRENTROPY CRITERION".ASTROPHYSICAL JOURNAL 827.2(2016).