| 一种基于数据外插改进的ART迭代算法 |
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| 引用本文： | 李毅,潘晋孝.一种基于数据外插改进的ART迭代算法[J].CT理论与应用研究,2011,20(1):21-27. |
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| 作者姓名： | 李毅 潘晋孝 |
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| 作者单位： | 中北大学理学院数学系,太原,030051 |
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| 摘 要： | 本文针对有限角度的投影数据的CT图像重建问题,提出了一种基于数据外插改进的ART算法.该算法的基本思想足运用已知角度的投影数据来补全未知角度的投影数据,再用ART算法进行图像重建.最后用模拟的投影数据进行了重建图像的数值实验.实验结果表明该算法不但提高了重建图像质量,同时也提高了图像达代的收敛速度.
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| 关 键 词： | 有限角度 不完全投影数据 图像重建 达代算法 |
Base on Date Extraplation Improve ART Iterations Algorithm |
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| LI Yi,PAN Jin-xiao.Base on Date Extraplation Improve ART Iterations Algorithm[J].Computerized Tomography Theory and Applications,2011,20(1):21-27. |
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| Authors: | LI Yi PAN Jin-xiao |
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| Institution: | LI Yi,PAN Jin-xiao (Department of Mathematics,North University of China,Taiyuan 030051,China) |
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| Abstract: | In order to reconstruct high-quality image from projection data at limited angle,we develop an improved fast iterative reconstruction algorithm. The basic idea of this algorithm is that used the perspective of data to complete unknown perspective projection data is applied,and the image can be made by Algebraic Reconstruction Technique(ART) . In the end,we have performed numerical experiments using computer simulation data. Experimental results demonstrate that the proposed algorithm not only improves the q... |
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| Keywords: | limited angle incomplete projection data image reconstruction iterative algorithm |
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