The application of wavelet transform and wavelet lifting in signal processing of EGG.
- Author:
Wei DING
1
;
Shujia QIN
;
Lei MIAO
;
Ning XI
;
Hongyi LI
Author Information
1. Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China. dingwei@sia.cn
- Publication Type:Journal Article
- MeSH:
Electrodiagnosis;
methods;
Gastrointestinal Diseases;
diagnosis;
physiopathology;
Gastrointestinal Motility;
Humans;
Signal Processing, Computer-Assisted;
Stomach;
physiology;
Wavelet Analysis
- From:
Journal of Biomedical Engineering
2012;29(4):745-749
- CountryChina
- Language:Chinese
-
Abstract:
This paper introduced the definition, structure of basis wavelet functions and wavelet lifting. Wavelet transform and wavelet lifting were applied in signal processing of EGG in our study. The characteristics of signal energy, information entropy and joint entropy were analyzed to introduce general selective method of wavelet basis functions after the signals have been filtered. In order to verify the rationality of evaluation criteria, signals of electrogastrogram (EGG) were processed and filtered with different wavelet basis functions in the experiments. Signals of EGG were filtered by wavelet transform and wavelet lifting, slow wave and spike wave of EGG were filtered. And the rationality of wavelet transform, wavelet lifting and effectiveness of EGG filter algorithm were proved by the experimental data. It provided an effective solution for the diagnosis and measurement of gastric diseases.
