基于小波模极大原理的脉象特征提取研究

被引:4
作者
王燕 [1 ]
白涛 [2 ]
康景利 [3 ]
机构
[1] 北京印刷学院信息与机电工程学院
[2] 华为公司北京研究所
[3] 北京理工大学机电工程学院
关键词
脉诊; 脉象识别; 小波变换; 小波模极大分析; 特征提取;
D O I
10.16289/j.cnki.1002-0837.2006.01.010
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
目的根据小波分析原理,研究脉象特征提取方法,以有效解决基于时域或频域的传统方法所无法准确提取脉象特征的问题。方法运用小波模极大方法进行脉象信号周期分割和基本分解,沿时间排列并符号化脉象波上升沿与下降沿的模极大特征点、脉象波谷底和波峰的模极大特征点。结果确定了不明显的重搏前波、重搏波,以及在主波上升沿和下降沿上出现的不规则脉波,并进一步准确提取了脉象信号的多尺度特征和各种时域特征。结论采用此方法进行脉象信号的特征点定位并进一步完成特征提取,具有简单、快速、准确等特点,为进一步进行脉象分类识别研究奠定了基础。
引用
收藏
页码:41 / 46
页数:6
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