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Reducing Poisson noise and baseline drift in x-ray spectral images with bootstrap Poisson regression and robust nonparametric regression
Zhu, F; Qin, BJ; Feng WY(丰伟悦); 王华建;Feng, WY; Wang, HJ; Huang, SS; Lv, YS; Chen, Y
2013
发表期刊PHYSICS IN MEDICINE AND BIOLOGY
卷号58期号:6页码:1739-1758
摘要X-ray spectral imaging provides quantitative imaging of trace elements in a biological sample with high sensitivity. We propose a novel algorithm to promote the signal-to-noise ratio (SNR) of x-ray spectral images that have low photon counts. Firstly, we estimate the image data area that belongs to the homogeneous parts through confidence interval testing. Then, we apply the Poisson regression through its maximum likelihood estimation on this area to estimate the true photon counts from the Poisson noise corrupted data. Unlike other denoising methods based on regression analysis, we use the bootstrap resampling method to ensure the accuracy of regression estimation. Finally, we use a robust local nonparametric regression method to estimate the baseline and subsequently subtract it from the x-ray spectral data to further improve the SNR of the data. Experiments on several real samples show that the proposed method performs better than some state-of-the-art approaches to ensure accuracy and precision for quantitative analysis of the different trace elements in a standard reference biological sample.
学科领域Engineering; Radiology, Nuclear Medicine & Medical Imaging
DOI10.1088/0031-9155/58/6/1739
收录类别SCI
WOS记录号WOS:000315735400005
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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.ihep.ac.cn/handle/311005/224166
专题多学科研究中心
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GB/T 7714
Zhu, F,Qin, BJ,Feng WY,et al. Reducing Poisson noise and baseline drift in x-ray spectral images with bootstrap Poisson regression and robust nonparametric regression[J]. PHYSICS IN MEDICINE AND BIOLOGY,2013,58(6):1739-1758.
APA Zhu, F.,Qin, BJ.,丰伟悦.,王华建;Feng, WY.,Wang, HJ.,...&Chen, Y.(2013).Reducing Poisson noise and baseline drift in x-ray spectral images with bootstrap Poisson regression and robust nonparametric regression.PHYSICS IN MEDICINE AND BIOLOGY,58(6),1739-1758.
MLA Zhu, F,et al."Reducing Poisson noise and baseline drift in x-ray spectral images with bootstrap Poisson regression and robust nonparametric regression".PHYSICS IN MEDICINE AND BIOLOGY 58.6(2013):1739-1758.
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