A Filter Back-Projection Reconstruction Algorithm of 3D-CT for Flat Workpiece

金永; 王召巴

您当前的位置：

首页 >

文章列表页 >

A Filter Back-Projection Reconstruction Algorithm of 3D-CT for Flat Workpiece

更新时间：2026-09-14

- A Filter Back-Projection Reconstruction Algorithm of 3D-CT for Flat Workpiece
- 扁平构件的三维CT滤波反投影重建算法研究
- Issue 2, Pages: 180-184(2008)
- 作者机构：
  
  中北大学仪器科学与动态测试教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2008
- 稿件说明：
移动端阅览
金永, 王召巴. A Filter Back-Projection Reconstruction Algorithm of 3D-CT for Flat Workpiece[J]. 2008, (2): 180-184.
DOI：

金永, 王召巴. A Filter Back-Projection Reconstruction Algorithm of 3D-CT for Flat Workpiece[J]. 2008, (2): 180-184. DOI：

摘要

在对扁平构件投影方式分析的基础上

提出了将分布在平面上ρ滤波器变换到锥面上的方法

建立了分布在锥面上的ρ滤波器的数学模型.对扁平构件的仿真结果表明:在射线源为锥束入射扫描方式下

通过分布在锥面上的ρ滤波器进行滤波反投影重建

得到的重建切片图像能够明显区分物体的边界及内部缺陷的边界和密度

空间分辨率可达到2 lp/mm

密度分辨率达到了1%

验证了该重建算法的可行性.

Abstract

Based on the analysis of projection mode for flat pieces

a method of switching ρ-filter along the plane to the cone was presented and the mathematical model of ρ-filter along the cone was established.The simulation results demonstrate that the boundary of an object

and the boundary and density of a flaw can be distinguished obviously by filter back-projection reconstruction using ρ-filter along the cone in the scanning mode of cone incidence of X-ray source.Spatial and density resolution can reach 2 lp/mm and 1% respectively.The feasibility of the algorithm is verified.

关键词

Keywords

references

王召巴.任意角度入射的三维CT投影方法[J].计量学报,2002,23(1):1-5.Wang Zhaoba.A projection method for three-dimensional CT at arbitrary incident angle[J].Acta MetrologicaSinica,2002,23(1):1-5.(in Chinese)

王召巴.扁平构件的CT重建方法研究[J].应用基础与工程科学学报,2001,21(9):222-227.Wang Zhaoba.Reconstruction of the industrial piece with large and flat size by CT[J].Journal of basic science andengineering,2001,21(9):222-227.(in Chinese)

Kang S T,Cho H S.A projection method for reconstructing X-ray images of arbitrary croas-section[J].NDT&EI-nternational,1999,32:9-20.

Simon M,Sauerwein C.Quality control of light metal castings by 3D computed tomography[C].In Proceedings of15th World Conference on Nondestrucfive Tesfing.Editor:Associazione Italiana Prove non Distruttive October 2000in Rome,2000:864-879.

Views

153

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A Review of the Technology of 3D Reconstruction Based on Layer Data

CT图像环形伪迹分析

Finite Element Simulation of Stress for Optic Nerve in Damaged Eye Socket

Adaptive DFT Channel Estimation Algorithm Based on Joint Delay and SNR Estimation in OFDM System

A Shock Wave Testing System for High⁃Altitude Explosion Experiments

Related Author

梁远蕾

王宗彦

庞彦伟

王召巴

林敏

岳海霞

李延军

陈维毅

Related Institution

华北工学院机械工程系

华北工学院现代无损检测中心

太原理工大学应用力学与生物医学工程研究所

⁰