The goal of the thesis was to develop a graphic user interface for
visualization, processing and analysis of electrohysterogram (EHG) records.
We developed the graphic user interface EHGLab, which is adapted
for work with the EHG records in the WaveForm DataBase (WFDB) format.
The EHGLab interface allows display of the signals in time and frequency
domain. To reject noise in signals we designed Butterworth digital
filters using bidirectional filtering scheme. The user interface allows
basic manipulation of the EHG records, like setting annotations and cutting
selected parts of the records. For the estimation of the amplitude and power
spectra we used the fast Fourier transformation algorithm and autoregressive
method. The interface allows also analysis of the computed power spectra
in the selected frequency band by seeking for the peak spectrum, the peak
frequency of the spectrum, and the median frequency. The interface was
developed in the NetBeans and Java environments.
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