| 基于Twomey算法的CT图像重建 |
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| 引用本文： | 郭威,陈贺新. 基于Twomey算法的CT图像重建[J]. 吉林大学学报(工学版), 2011, 0(Z1): 332-335 |
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| 作者姓名： | 郭威 陈贺新 |
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| 作者单位： | 吉林大学通信工程学院;吉林大学公共计算机教学与研究中心 |
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| 基金项目： | 国家自然科学基金国际合作项目(60911130128) |
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| 摘 要： | 针对不完全投影数据的CT图像重建,本文将原本用于反演微粒粒径分布的Twomey算法引入并应用到CT图像重建中。在代数迭代层面上把其与代数重建技术(ART)算法和同步迭代重建技术(SIRT)算法分析对比后进行了计算机模拟实验。仿真结果显示:本文算法所求得的解的精度要优于主流的ART和SIRT算法。
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| 关 键 词： | 信息处理技术 图像重建 Twomey算法 代数重建技术(ART)算法 同步迭代重建技术(SIRT)算法 迭代技术 稀疏系统 |
Computerized tomographic image reconstruction based on Twomey algorithm |
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| GUO Wei,CHEN He-xin. Computerized tomographic image reconstruction based on Twomey algorithm[J]. Journal of Jilin University:Eng and Technol Ed, 2011, 0(Z1): 332-335 |
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| Authors: | GUO Wei CHEN He-xin |
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| Affiliation: | 1(1.School of Communication Engineering,Jilin University,Changchun 130022,China;2.Computer Teaching and Research Center,Jilin University,Changchun 130022,China) |
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| Abstract: | Facing image reconstructing images from small amounts of data in computerized tomography,the Twomey nonlinear iterative algorithm for inverting aerosol size distribution data was employed to computerized tomographic image reconstruction.The proposed method was compared with the commonly used ART and SIRT algorithms.Numerical experiments indicate that the Twomey's algorithm gives much better results than ART and SIRT algorithms. |
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| Keywords: | information processing image reconstruction Twomey algorithm ART algorithm SIRT algorithm iterative technique sparse systems |
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