Patterns in Hilbert transforms and Wigner-Ville distributions of electrocardiogram data

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Patterns in Hilbert transforms and Wigner-Ville distributions of electrocardiogram data

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Title: Patterns in Hilbert transforms and Wigner-Ville distributions of electrocardiogram data
Author: Abeysekera, R; Bolton, R; Westphal, L; Boashash, B
Abstract: The computation and characteristics of two new representations of single lead electrocardiogram data, both based upon the analytic signal corresponding to the waveform, are presented. The first method, employing a complex plane plot of the analytic signal, emphasizes waveform shape independently of time base; the second, a time-frequency representation using the Wigner-Ville distribution, appears to highlight instantaneous frequency variation within the waveform. Both are potentially useful when the patterns are displayed using contour plots, and a specific computerised pattern recognition technique is suggested and some results presented.
Description: This paper shows that WVD plots of ECG signals can help enhance physician identification of normal and abnormal morphologies. (The most recent upgrade of the original software package that calculates Time-Frequency Distributions and Instantaneous Frequency estimators can be downloaded from the web site: www.time-frequency.net. This was the first software developed in the field, and it was first released publicly in 1987 at the 1st ISSPA conference held in Brisbane, Australia, and then continuously updated).
URI: http://hdl.handle.net/10576/10753
Date: 1986-04

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