基于投影域降噪的低剂量ct图像重建技术分析

《基于投影域降噪的低剂量ct图像重建技术分析》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、中北大学学位论文目录1绪论1.1课题的研究背景和意义..............................................11.2低剂量CT国内外研究现状...........................................31.3本论文主要研究内容................................................42图像重建的经典算法2.1滤波反投影重建算法................................................62.1.1Radon变换...

2、...............................................62.1.2傅里叶中心切片定理.........................................72.1.3基于平行束的滤波反投影重建算法.............................92.2扇束投影重建算法.................................................112.3迭代重建算法.....................................................1

3、52.3.1迭代重建算法基本概念......................................152.3.2代数重建算法..............................................182.3.3统计迭代算法..............................................192.4图像质量评价方法................................................192.5本章小结.....................................

4、....................213基于边缘值、方差以及脉冲性的各项异性重建算法3.1偏微分方程.......................................................223.2噪声模型.........................................................243.3算法改进.........................................................253.4实验仿真结果及分析.........................

5、......................273.4.1实验材料及相关参数描述...................................273.4.2重建图像比较..............................................273.5本章小结.........................................................31I中北大学学位论文4基于非局部信息与中值滤波的各向异性重建算法4.1中值滤波.......................................

6、..................324.2非局部理论.......................................................334.3基于非局部扩散信息与中值滤波的各项异性重建算法...................374.4实验仿真结果及分析...............................................394.4.1实验材料及相关参数描述....................................394.4.2重建图像比较.....................

7、.........................394.5本章小结.........................................................415基于像元模型、模糊滤波和偏微分方程的图像重建算法5.1采用像元的概念进行图像建模.......................................425.2模糊滤波器.......................................................445.3改进算法................................

8、.........................455.4实验仿真结果及分析........