基于小波变换的医学超声图像去噪方法研究(4)

目 录

第一章 绪论 ............................................................................................................................. 1

1.1 超声图像去噪的意义及目的 ······································································ 1

1.2 超声图像去噪的现状 ·················································································· 2

1.3 本文研究工作及概况 ·················································································· 3

第二章 超声成像的机理及其噪声特性 ................................................................... 4

2.1 超声成像原理及特点 ·················································································· 4

2.2 超声诊断仪的分类 ······················································································ 5

2.3 B超成像原理及应用 ···················································································· 7

第三章 超声图像去噪方法 ........................................................................................... 10

3.1 均值滤波方法 ···························································································· 10

3.2 维纳滤波方法 ···························································································· 11

3.3 中值滤波方法 ···························································································· 12

3.4 小波变换方法 ···························································································· 13

第四章 小波变换在图像去噪中的理论