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
ISSN1559-128X
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
DOI10.1364/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
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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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