计算机应用研究2017，Vol.34Issue(7)：2228-2231,4.DOI:10.3969/j.issn.1001-3695.2017.07.067
四种系统矩阵的建模方法在ASD-POCS算法中的比较
Comparison of four system modeling methods in ASD-POCS
摘要
Abstract
In image reconstruction algorithms,there are several difference exist by using kinds of system matrix modeling me-thods.In order to solve this problem,this paper designed and finished these methods:pixel driven,distance driven,improved distance driven and ray driven.Then it combined them with ASD-POCS and compared their speed of modeling,accuracy and their convergence rate in ASD-POCS algorithm.It also compared their sensitive degree by adding noise in projection data.Experiments prove that,distance driven is faster than others in system modeling,improved distance driven is more accurate and the ray driven has the fastest convergence speed.关键词
像素驱动/距离驱动/射线驱动/代数迭代/ASD-POCSKey words
pixel driven/distance driven/ray driven/ART/ASD-POCS分类
信息技术与安全科学引用本文复制引用
邰浩伟,乔志伟,宋文琪,李欣..四种系统矩阵的建模方法在ASD-POCS算法中的比较[J].计算机应用研究,2017,34(7):2228-2231,4.基金项目
国家留学基金资助项目(201608140014) （201608140014）
