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초록

We propose an individual identification method using a single-lead electrocardiogram signal. In this paper,lead I ECG is measured from subjects in various physical and psychological states. We performed a noise reductionfor lead I signal as a preprocessing stage and this signal is used to acquire the representative beat waveform for individualsby utilizing the ensemble average. From the P-QRS-T waves, features are extracted to identify individuals,19 using the duration and amplitude information, and 16 from the QRS complex acquired by applying Pan-Tompkinsalgorithm to the ensemble averaged waveform. To analyze the effect of each feature and to improve efficiency whilemaintaining the performance, Relief-F algorithm is used to select features from the 35 features extracted. Some orall of these 35 features were used in the support vector machine (SVM) learning and tests. The classification accuracyusing the entire feature set was 98.34%. Experimental results show that it is possible to identify a person by featuresextracted from limb lead I signal only.

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