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2011-2019年

	Background noise removal in x-ray ptychography
	Wang, CP; Xu, ZJ; Liu, HG; Wang, Y; Wang, J; Tai, RZ
	2017
Source Publication	APPLIED OPTICS
ISSN	1559-128X
Volume	56 Issue:8 Pages:2099-2111
Subtype	期刊论文
Abstract	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
Indexed By	SCI
Language	英语
WOS ID	WOS:000396227500010
Citation statistics	Cited Times:9[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/27264
Collection	中科院上海应用物理研究所2011-2019年
Recommended Citation 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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