A Comparative Study on Removal Methods of ECG Baseline Wandering
- VernacularTitle:心电基线漂移去除方法的比较研究
- Author:
Yanjun LI
;
Hong YAN
;
Zengli WANG
- Publication Type:Journal Article
- Keywords:
ECG;
noise suppressing;
baseline drift;
digital filter;
polynomial fitted
- From:Space Medicine & Medical Engineering
2006;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Baseline shift has severe effects on the analysis and processing of ECG. Filter and baseline polynomial-fitting are the main methods for removing baseline interference. This paper discussed the filtering ways of morphology filter,median filter,Linear-phase finite impulse response (FIR) filter,wavelet transform,morphology and wavelet combined method,median filter and wavelet combined method,comparing with the approach of baseline polynomial fitted way which composed of differential method and coordinates method. Experimental results showed that the poly-fitting approach are more efficient,had certain adaptive quality and little distortion,while filter ways were easy to implement but not accurate enough. As for real time and accuracy,polynomial fitted way has an advantage over filtering ways. Under the circumstances of having great difficulty in extracting baseline points,it is more appropriate to use filter ways to eliminate baseline wandering. This paper compared the methods in common use for suppressing baseline wander so as to help users to choose the proper way.
