| 一种基于投影变换的旋转型CL重建算法 |
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| 引用本文： | 王敬雨,韩玉,李磊,席晓琦,孙艳敏,闫镔.一种基于投影变换的旋转型CL重建算法[J].CT理论与应用研究,2017,26(5):575-582. |
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| 作者姓名： | 王敬雨 韩玉 李磊 席晓琦 孙艳敏 闫镔 |
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| 作者单位： | 信息工程大学信息系统工程学院, 郑州 450002 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金 |
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| 摘 要： | 相对于传统计算机断层成像(CT),计算机层析成像(CL)对于扁平状物体的检测具有独特的优势。旋转型CL不严格满足滤波反投影(FBP)算法的条件,针对这一问题本文提出了一种基于投影变换的旋转型CL FBP重建算法。首先介绍了旋转型CL的扫描结构;然后阐述了该结构下投影的生成方法及基于投影变换的投影数据重构方法;最后利用重构后投影数据进行滤波反投影,并通过仿真重建实验验证了算法的有效性。
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| 关 键 词： | CT 旋转型CL FBP 投影变换 |
| 收稿时间： | 2017-03-21 |
A Novel Reconstruction Algorithm Based-on Projection Transformation for the Rotational Cone-beam CL |
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| WANG Jing-yu,HAN Yu,LI Lei,XI Xiao-qi,SUN Yan-min,YAN Bin.A Novel Reconstruction Algorithm Based-on Projection Transformation for the Rotational Cone-beam CL[J].Computerized Tomography Theory and Applications,2017,26(5):575-582. |
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| Authors: | WANG Jing-yu HAN Yu LI Lei XI Xiao-qi SUN Yan-min YAN Bin |
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| Institution: | Information System Engineering College, Information Engineering University, Zhengzhou 450002, China |
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| Abstract: | Computed Laminography (CL) has a unique advantage over CT for flat objects. However, the rotational CL does not satisfy the conditions of the filtered back-projection (FBP) reconstruction algorithm. This paper proposes a novel FBP reconstruction algorithm based on projection transformation for the rotational cone-beam CL. Firstly, the structure of the rotational CL is introduced; Secondly, the way generating projections and the method rearranging the data are elaborated; Lastly, the data rearranged is applied to filter and back projection, and the simulations of reconstruction prove that the method of this paper is effective. |
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| Keywords: | CT rotational CL FBP projection transform |
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