Background noise removal in x-ray ptychography

doi:10.1364/AO.56.002099

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Background noise removal in x-ray ptychography
	Wang, CP; Xu, ZJ; Liu, HG; Wang, Y; Wang, J; Tai, RZ
	2017
发表期刊	APPLIED OPTICS
ISSN	1559-128X
卷号	56 期号:8 页码:2099-2111
文章类型	期刊论文
摘要	Ptychography is a diffraction-based x-ray microscopy method that removes the resolution limit imposed by image-forming optical elements. However, background noise in the recorded diffraction patterns will degrade the reconstructed images and may cause reconstruction failure. Removal of the background noise from a ptychography dataset is an important but rather ambiguous prereconstruction data processing step because high-spatial-frequency diffraction signals are inevitably partly wiped out along with the noise. In this paper, several newly designed techniques for removing background noise from experimental ptychographic datasets are provided. Meanwhile, effects of residual background noise and high-frequency signal loss on reconstructed image quality are discussed in detail. The image quality is assessed quantitatively by the power spectral density analysis method and spatial resolution calculation. Both the simulated and experimental results indicate that the positive effect of noise removal by these methods clearly exceeds the negative effect of the accompanied high-spatial-frequency signal loss because part of the lost signals can be recovered by the improved consistencies between neighboring diffraction patterns by the noise removal. (C) 2017 Optical Society of America
DOI	10.1364/AO.56.002099
收录类别	SCI
语种	英语
WOS记录号	WOS:000396227500010
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/27264
专题	中科院上海应用物理研究所2011-2018年
推荐引用方式 GB/T 7714	Wang, CP,Xu, ZJ,Liu, HG,et al. Background noise removal in x-ray ptychography[J]. APPLIED OPTICS,2017,56(8):2099-2111.
APA	Wang, CP,Xu, ZJ,Liu, HG,Wang, Y,Wang, J,&Tai, RZ.(2017).Background noise removal in x-ray ptychography.APPLIED OPTICS,56(8),2099-2111.
MLA	Wang, CP,et al."Background noise removal in x-ray ptychography".APPLIED OPTICS 56.8(2017):2099-2111.

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