Estimation of slowly changing components of physiological signals

Author

Raifel, M. ; Ron, S.

Author_Institution

Occupational Health & Rehabilitation Inst., Loewenstein Hospital, Ra´´anana, Israel

Volume

44

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

215

Lastpage

220

Abstract

A method for the estimation of slowly changing components of physiological signals is presented in this communication. The method is based on a sequential approximation of slowly changing components by a low-order polynomial function. The polynomial coefficients are obtained by minimizing the distance between the expected zero crossing density (ZCD) value of the fast components of the physiological signal and the estimated ZCD value of these components. The method has been tested and preliminary results were satisfactory.

Keywords

approximation theory; electrocardiography; medical signal processing; polynomials; ECG analysis; baseline; drift; expected zero crossing density value; low-order polynomial function; physiological signals; polynomial coefficients; sequential approximation; slowly changing components estimation; Biomedical monitoring; Density functional theory; Electrocardiography; Hospitals; Least squares approximation; Low-frequency noise; Occupational health; Polynomials; Signal processing; Testing; Algorithms; Electrocardiography; Signal Processing, Computer-Assisted;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.554769

Filename

554769