| 联合代数重建算法改进及其图像信息处理设计 |
| |
| 引用本文： | 李春芳,是度芳,贺渝龙.联合代数重建算法改进及其图像信息处理设计[J].华中科技大学学报(自然科学版),2004,32(10):10-12. |
| |
| 作者姓名： | 李春芳 是度芳 贺渝龙 |
| |
| 作者单位： | 1. 中南民族大学电子信息工程学院,湖北,武汉,430074
2. 华中科技大学,物理系,湖北,武汉,430074 |
| |
| 基金项目： | 国家自然科学基金资助项目 (6 98780 0 7)，中南民族大学校自然科学基金资助项目 |
| |
| 摘 要： | 提出了一种基于联合迭代重建法的改进算法，该算法进行误并分配时综合考虑了穿过像素的射线长度和像素的灰度值，有效地抑制了联合迭代重建法(SART)的边缘效应．同时，还设计了实际测量的信息处理方法，避免像素值“囚于”零处，使得重建精度大大地提高，并能很好地应用于非对称场的少数投影重建。
|
| 关 键 词： | 图像重建 计算机层析 联合迭代重建法 信息处理 |
| 文章编号： | 1671-4512(2004)10-0010-03 |
| 修稿时间： | 2002年10月10 |
Modification of simultaneous algebraic reconstruction and its information processing |
| |
| Li Chunfang Shi Dufang He YulongAssoc. Prof., College of Electronic Information Engineering,South-Central University for Nationalities,Wuhan ,China..Modification of simultaneous algebraic reconstruction and its information processing[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2004,32(10):10-12. |
| |
| Authors: | Li Chunfang Shi Dufang He YulongAssoc Prof College of Electronic Information Engineering South-Central University for Nationalities Wuhan China |
| |
| Institution: | Li Chunfang Shi Dufang He YulongAssoc. Prof., College of Electronic Information Engineering,South-Central University for Nationalities,Wuhan 430074,China. |
| |
| Abstract: | A modified simultaneous algebraic reconstruction technique (SART) was presented,with both the density of pixel and the ray length across it in the error distribution taken into account. The edge distortion of SART was solved. The method of information processing was designed. The new algorithm made an improvement in image quality and worked well in the reconstruction of asymmetrical field from fewer views. |
| |
| Keywords: | image reconstruction computer tomography simultaneous algebraic reconstruction information processing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
