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A new method of image reconstruction with high resolution in X-ray coded aperture imaging (EI CONFERENCE)

文献类型：会议论文

作者Sun Y.; Sun Y.
出版日期2005
会议名称Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II, August 2, 2005 - August 4, 2005
会议地点San Diego, CA, United states
关键词In the processing diagnosis of the inertia confinement fusion (ICF) the ring coded aperture imaging technique is applied in order to gain high space and time resolutions simultaneously. The key of acquiring high spatial resolution is how to obtain a point spread function of an imaging system. The common method is the firsthand projection method which is an approximate one. The x-ray diffraction effect is neglected in the method so the resolution of reconstructed image is decreased. We have derived the point spread function (PSF) of the ring coded aperture from scalar diffraction theory. And the Wiener filter is fabricated on the basis of the PSF. In National Key Laboratory of Laser Fusion at China Academy of Engineering Physics the imaging experiment on the diagnosis of ICF is completed using the ring coded aperture plate with inner diameter d1 = 250m and outer diameter d2 = 260m . The obtained coded image is processed by the Wiener filter which diffractive effect is considered. The processed results have shown that resolution and modulation contrast of acquired image are evidently better than the results obtained by the firsthand projection method.
收录类别EI
源URL[http://ir.ciomp.ac.cn/handle/181722/32929]  
专题长春光学精密机械与物理研究所_中科院长春光机所知识产出_会议论文
推荐引用方式
GB/T 7714		 Sun Y.,Sun Y.. A new method of image reconstruction with high resolution in X-ray coded aperture imaging (EI CONFERENCE)[C]. 见:Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II, August 2, 2005 - August 4, 2005. San Diego, CA, United states.

入库方式： OAI收割

来源：长春光学精密机械与物理研究所

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