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

doi:10.3233/JCM-193975

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	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
刊名	Journal of Computational Methods in Sciences and Engineering
	2019
卷号	19 期号:4 页码:1109-1123
关键词	Image quality,Displacement measurement,Extreme ultraviolet lithography,Image analysis,Magnetic fields,Quality control,Strain measurement
ISSN号	14727978
DOI	10.3233/JCM-193975
英文摘要	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.
URL标识	查看原文
内容类型	期刊论文
源URL	[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.