DOI: 10.5937/jaes18-26041
This is an open access article distributed under the CC BY-NC-ND 4.0 terms and conditions.
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Volume 18 article 675 pages: 181 - 191
Electrocardiogram (ECG) based biometric is challenging to be developed with the aim of high-security access. This
biometric system is more difficult to falsify, compared to the conventional biometric systems. From previous proposed
studies, there is still a gap to improve the accuracy of the system. Therefore in this study, a new protocol is proposed
to improve the performance of the ECG biometric system compared to previously reported studies. This study
decomposes the ECG signals using a method based on empirical mode decomposition (EMD) based, which are
Variational Mode Decomposition (VMD) and Ensemble Empirical Mode Decomposition (EEMD). These two methods
are the development of the EMD method to overcome one main problem of EMD. That is, the EMD method generates
oscillations with the same time scales, which stored in different decomposition levels. A private ECG dataset,
recorded using one lead ECG signal from 11 subjects, is used in this study. ECG signals from each person are then
segmented into ten windows to become training data and test data. VMD and EEMD methods are used to decompose
ECG signals into five sub-signals. Feature extraction based on statistical calculations is applied at each level of
decomposition to obtain the characteristics of the ECG signal. Mean, variance, skewness, kurtosis, and entropy are
evaluated as predictors. Support vector machines and 10-fold cross-validation are used to validate the performance
of the proposed method. Our simulations demonstrate that the proposed method outperforms several previous studies
and achieves an accuracy of up to 98.2%.
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