Quality evaluation of solar magnetic field images at EUV wavelengths in digital image correlation method

doi:10.3233/JCM-193975

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	Quality evaluation of solar magnetic field images at EUV wavelengths in digital image correlation method
	Y.Liu; K.-F.Song; J.-L.Ma; X.-D.Wang; Z.-W.Han
	2019
发表期刊	Journal of Computational Methods in Sciences and Engineering
ISSN	14727978
卷号	19 期号:4 页码:1109-1123
摘要	Application in the actual using, obviously different intensity distribution characteristics are shown in the images of solar magnetic field at extreme ultraviolet (EUV) wavelength. When it comes to displacement measurements by digital image correlation (DIC), it has a great impact on ultimate accuracy. It is an interesting and confusing issue that how to evaluate the quality of different regional solar magnetic field images at EUV wavelengths with a simple but effective parameter. This article presents a new valid part parameter for assessment of the quality of different part solar magnetic field images at EUV wavelengths used in DIC which is called comprehensive consideration of mean subset intensity and gradients (CCMSIG). Three regional images (active region, flare region, and coronal hole) are numerically translated in order to confirm that the validity of the novel concept and DIC method is used to compare the displacement measurement results with the accurate results. This paper also discusses the impact on accuracy of deformation measurements when it comes to the subset size associated with regional image quality and subset displacement functions. The results show that mean bias error and standard deviation (STD) for the sub-pixel displacement measurement are in close proximity to the CCMSIG of the calculated regional images and the high-quality regional images are supposed to be with small CCMSIG which is coincident with the theoretical predictions. 2019 - IOS Press and the authors. All rights reserved.
关键词	Image quality,Displacement measurement,Extreme ultraviolet lithography,Image analysis,Magnetic fields,Quality control,Strain measurement
DOI	10.3233/JCM-193975
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收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63171
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y.Liu,K.-F.Song,J.-L.Ma,et al. Quality evaluation of solar magnetic field images at EUV wavelengths in digital image correlation method[J]. Journal of Computational Methods in Sciences and Engineering,2019,19(4):1109-1123.
APA	Y.Liu,K.-F.Song,J.-L.Ma,X.-D.Wang,&Z.-W.Han.(2019).Quality evaluation of solar magnetic field images at EUV wavelengths in digital image correlation method.Journal of Computational Methods in Sciences and Engineering,19(4),1109-1123.
MLA	Y.Liu,et al."Quality evaluation of solar magnetic field images at EUV wavelengths in digital image correlation method".Journal of Computational Methods in Sciences and Engineering 19.4(2019):1109-1123.

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