[1]张家平.代数重组技术的计算机模拟研究[J].东南大学学报(自然科学版),1984,14(3):106-114.[doi:10.3969/j.issn.1001-0505.1984.03.011]
 Zhang Jiaping.A Study of Algebraic Reconstruction Technics by Computer Simulations[J].Journal of Southeast University (Natural Science Edition),1984,14(3):106-114.[doi:10.3969/j.issn.1001-0505.1984.03.011]
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代数重组技术的计算机模拟研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
14
期数:
1984年第3期
页码:
106-114
栏目:
本刊信息
出版日期:
1984-09-20

文章信息/Info

Title:
A Study of Algebraic Reconstruction Technics by Computer Simulations
作者:
张家平
南京工学院无线电电子学研究所
Author(s):
Zhang Jiaping?
Research Institute of Electronics
关键词:
重组技术 计算机模拟研究 计算效率 代数 加权函数 重组方法 图象 数学模型 迭代过程 迭代步骤
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1984.03.011
摘要:
代数重组技术(简称ART)是级数展开算法这一大类中一种重要的方法。ART的计算效率是比较低的,但是,在某些情况下,比如折射修正、非线性修正或不完全投影重组,ART可以优于卷积法。在本文中,对ART算法的基本步骤进行了系统的计算机模拟研究,例如迭代方法、迭代步骤、加权因子的选择等。此外,对弛豫系数的选择进行了讨论,为改进重组精度和计算效率作了一些尝试。最后编制了实用的程序并给出了使用这程序所得到的图象。
Abstract:
Algebraic Reconstruction Techniques (ART) is an important approach from a large family of the series expansion reconstruction algorithms. The computative efficieney of ART is rather low however, in some situations where the refraction correction, the nonlinear correction or the reconstruction with incomplete projects are needed-ART may be well preferable to the convolution method. In this paper, the basic procedures of ART Algorithm are systematically studied by computer simulation, such as iterative methods, iterative steps, choice of weighing factor etc. A discussion about the choice of relaxation parameter has been also proposed. The attempt has been made to improve the reconstruction accuracies and the computer efficiency. As results, an available program is developed and the reconstruction images with this program are shown.
更新日期/Last Update: 2013-05-01