ISSN 1004-4140
CN 11-3017/P

基于FDK算法减小误差的研究

唐杰, 张丽, 邢宇翔, 陈志强

唐杰, 张丽, 邢宇翔, 陈志强. 基于FDK算法减小误差的研究[J]. CT理论与应用研究, 2006, 15(1): 66-72.
引用本文: 唐杰, 张丽, 邢宇翔, 陈志强. 基于FDK算法减小误差的研究[J]. CT理论与应用研究, 2006, 15(1): 66-72.
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TANG Jie, ZHANG Li, XING Yu-xiang, CHEN Zhi-qiang. Investigations into Error Reduction Based FDK Algorithms[J]. CT Theory and Applications, 2006, 15(1): 66-72.
Citation: TANG Jie, ZHANG Li, XING Yu-xiang, CHEN Zhi-qiang. Investigations into Error Reduction Based FDK Algorithms[J]. CT Theory and Applications, 2006, 15(1): 66-72.
shu

基于FDK算法减小误差的研究

  • 清华大学工程物理系, 北京, 100084

基金项目: 

This work is supported by the grant from the National Natural Science Foundation of China(No.10135040/10575059) and the Ph.D.Programs Foundation of Ministry of Edu- cation of China(No.20030003074)

详细信息
    作者简介:

    唐杰: TANG Jie, male, is a PhD candidate of the Dept. of Engineering Physics, Tsinghua University. His main researches are X-ray imaging physics, CT imaging mathematics and their applications. Address: Dept. of Engineering Physics, Tsinghua University, Beijing, China (100084). Tel: 8610-62780909-86092. Email: tangjie35@tsinghua.org.cn;ZHANG Li, female, is an associate professor of the Dept. of Engineering Physics, Tsinghua University. Her research is X-ray imaging systems and technology, image data correction, image processing and pattern recognition;XING Yuxiang, female, is a lector of the Dept. of Engineering Physics, Tsinghua University. Her research is X-ray imaging systems and technology, image data correction, 3D imaging reconstruction;CHEN Zhiqiang, male, is an associate professor of the Dept. of Engineering Physics, Tsinghua University. His research is X-ray imaging systems and technology, 3D imaging reconstruction, image processing and image visualization.

  • 中图分类号: TP391.41;R814.2

Investigations into Error Reduction Based FDK Algorithms

  • Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Funds: 

This work is supported by the grant from the National Natural Science Foundation of China(No.10135040/10575059) and the Ph.D.Programs Foundation of Ministry of Edu- cation of China(No.20030003074)

摘要

    摘要
  • 摘要: 本文介绍了一个重建误差和扫描半径之间的关系,并在此关系的基础上提出了一种新的基于不同半径的两个同心圆轨道的算法,利用估算的重建误差改善重建结果。随后进行了数值仿真实验。通过数值模拟实验评价了此算法的性能,结果表明新的算法能比已有的同类算法更好地估计重建误差,从而获得更精确的重建结果,在锥角≤±10°时都能获得相当好的重建结果,在锥角更大时也能起到很好的改善作用。最后本文讨论了此类算法的局限性。
    Abstract: In this paper, we describe the relationship between the reconstruction error and the locus radius. Based on this relationship we fomulate our new algorithm. Numerical simulations are done to evalute its performance and show that the new algorithm can get more accurate reconstruction than algorithms of the same kind Finally, we discuss the shortcomings of this kind of algorithms.
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出版历程
  • 收稿日期:  2006-01-08
  • 网络出版日期:  2022-12-16

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