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A signal-to-noise ratio based false identification reduction system was proposed for an ECG based biometric system. The system generated a signal quality index (SQI) based on the 25th percentile of the signal-to-noise ratios of the individual beats within a 20 s segment of ECG data. Identifications generated from ECG segments with SQIs below a set threshold were gated. The system was tested using...
Transparent conductive oxides are investigated for use as noninvasive, surface biopotential electrode. Performance of the ITO electrode is compared against conventional Ag/AgCl electrodes. Results show that the ITO electrodes have an electrode-skin impedance that is approximately an order of magnitude higher than Ag/AgCl electrodes. The electrocardiogram is similar in the time and frequency domain...
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