An improved deconvolution method for X-ray coded imaging in inertial confinement fusion

doi:10.1088/1674-1056/22/10/104202

中国物理B ›› 2013, Vol. 22 ›› Issue (10): 104202-104202.doi: 10.1088/1674-1056/22/10/104202

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

An improved deconvolution method for X-ray coded imaging in inertial confinement fusion

赵宗清^{a b}, 何卫华^{a b}, 王剑^{a b}, 郝轶丹^{a b}, 曹磊峰^{a b}, 谷渝秋^{a b}, 张保汉^{a b}

a Science and Technology on Plasma Physics Laboratory, Mianyang 621900, China;
b Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China

收稿日期:2012-12-06 修回日期:2013-02-21 出版日期:2013-08-30 发布日期:2013-08-30
基金资助:
Project supported by the National High-Tech ICF Committee of China, Foundation of China Academy of Engineering Physics (Grant Nos. 2009A0102003 and 2011B0102021), and the National Natural Science Foundation of China (Grant No. 10905051).

An improved deconvolution method for X-ray coded imaging in inertial confinement fusion

Zhao Zong-Qing (赵宗清)^{a b}, He Wei-Hua (何卫华)^{a b}, Wang Jian (王剑)^{a b}, Hao Yi-Dan (郝轶丹)^{a b}, Cao Lei-Feng (曹磊峰)^{a b}, Gu Yu-Qiu (谷渝秋)^{a b}, Zhang Bao-Han (张保汉)^{a b}

a Science and Technology on Plasma Physics Laboratory, Mianyang 621900, China;
b Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China

Received:2012-12-06 Revised:2013-02-21 Online:2013-08-30 Published:2013-08-30
Contact: Zhao Zong-Qing E-mail:zhaozongqing99@gmail.com
Supported by:
Project supported by the National High-Tech ICF Committee of China, Foundation of China Academy of Engineering Physics (Grant Nos. 2009A0102003 and 2011B0102021), and the National Natural Science Foundation of China (Grant No. 10905051).

摘要/Abstract

摘要： In inertial confinement fusion (ICF), X-ray coded imaging is considered as the most potential means to diagnose the compressed core. The traditional Richardson-Lucy (RL) method has a strong ability to deblur the image where the noise follows the Poisson distribution. However, it always suffers from over-fitting and noise amplification, especially when the signal-to-noise ratio of image is relatively low. In this paper, we propose an improved deconvolution method for X-ray coded imaging. We model the image data as a set of independent Gaussian distributions and derive the iterative solution with a maximum-likelihood scheme. The experimental results on X-ray coded imaging data demonstrate that this method is superior to the RL method in terms of anti-overfitting and noise suppression.

关键词: inertial confinement fusion, coded imaging, deconvolution, Gaussian distribution, maximum-likelihood

Abstract: In inertial confinement fusion (ICF), X-ray coded imaging is considered as the most potential means to diagnose the compressed core. The traditional Richardson–Lucy (RL) method has a strong ability to deblur the image where the noise follows the Poisson distribution. However, it always suffers from over-fitting and noise amplification, especially when the signal-to-noise ratio of image is relatively low. In this paper, we propose an improved deconvolution method for X-ray coded imaging. We model the image data as a set of independent Gaussian distributions and derive the iterative solution with a maximum-likelihood scheme. The experimental results on X-ray coded imaging data demonstrate that this method is superior to the RL method in terms of anti-overfitting and noise suppression.

Key words: inertial confinement fusion, coded imaging, deconvolution, Gaussian distribution, maximum-likelihood

中图分类号: (Image forming and processing)

42.30.Va

赵宗清, 何卫华, 王剑, 郝轶丹, 曹磊峰, 谷渝秋, 张保汉. An improved deconvolution method for X-ray coded imaging in inertial confinement fusion[J]. 中国物理B, 2013, 22(10): 104202-104202.

Zhao Zong-Qing (赵宗清), He Wei-Hua (何卫华), Wang Jian (王剑), Hao Yi-Dan (郝轶丹), Cao Lei-Feng (曹磊峰), Gu Yu-Qiu (谷渝秋), Zhang Bao-Han (张保汉). An improved deconvolution method for X-ray coded imaging in inertial confinement fusion[J]. Chin. Phys. B, 2013, 22(10): 104202-104202.

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An improved deconvolution method for X-ray coded imaging in inertial confinement fusion

An improved deconvolution method for X-ray coded imaging in inertial confinement fusion

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