基于小波分析的功能磁共振图像的去噪预处理

被引:9
作者
曾卫明
罗立民
梁晓云
王世杰
郭圣文
机构
[1] 东南大学生物医学工程系
[2] 东南大学生物医学工程系 江苏南京 江西财经大学信息管理学院江西南昌
[3] 江苏南京 
关键词
功能磁共振成像; 去噪; 小波分析; 门限函数; 相关性噪声;
D O I
暂无
中图分类号
R445.2 [核磁共振成像];
学科分类号
摘要
对基于小波分析的fMRI去噪作了较具体的论述,并在Donoho和Johnstone的Hard函数及Soft函数基础上提出了更合适的Hard-Soft函数.从结果分析看,Hard-Soft函数比Soft函数在保留图像细节上占优,而去噪性能比Hard函数要好.因而能够在图像去噪和保护信息上达到更好的均衡,克服了Hard函数和Soft函数的两个极端状况.
引用
收藏
页码:118 / 123
页数:6
相关论文
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