图像重建算法FBP与OSEM在工业CT应用中的对比研究

基金项目:

中国科学院创新基金(KJCX1-SW-08)

详细信息

Comparative Analysis of FBP and OSEM Reconstruction Methods in Industrial CT

摘要: 滤波反投影法(FBP)与有序子集最大期望值法(OSEM)是图像重建中最为常用的两种方法,本文研究了这两种重建方法在工业CT中的应用,就不同的探测器数目、不同的旋转投影角度取样数、不同的噪声水平,对两种方法的重建效果进行对比与分析,结果表明在某些条件下迭代法OSEM重建图像质量明显好于解析法FBP。
- 计算机断面成像 /
- 滤波反投影 /
- 有序子集最大似然法 /
- 图像重建
Abstract: FBP and OSEM are the most frequently used methods in image reconstruction.In this paper,we report the application of these two methods in the reconstruction of industrial CT,compare and analysis the reconstructed results of the two methods in different detector bin numbers,different samplings of angles,and different noise levels.The conclusion is that the reconstruction results of iterative OSEM are better than those of analytic FBP in certain conditions.
- CT /
- FBP /
- OSEM /
- Image Reconstruction