귀 주변에서 측정한 유사 심전도 기반 개인 인증 시스템 개발 가능성

• Published in: Journal of biomedical engineering research Vol. 41; no. 1; pp. 42 - 47
• Main Authors: 최가영, 박종윤, 김다영, 김연우, 임지헌, 황한정, Choi, Ga-Young, Park, Jong-Yoon, Kim, Da-Yeong, Kim, Yeonu, Lim, Ji-Heon, Hwang, Han-Jeong
• Format: Journal Article
• Language: Korean
• Published: 대한의용생체공학회 01.02.2020
• Subjects: 의공학; Biosignal; Similar electrocardiography (ECG); QRS features; Personal authentication
• ISSN: 1229-0807; 2288-9396

A personal authentication system based on biosignals has received increasing attention due to its relatively high security as compared to traditional authentication systems based on a key and password. Electrocardiography (ECG) measured from the chest or wrist is one of the widely used biosignals to develop a personal authentication system. In this study, we investigated the feasibility of using similar ECG measured behind the ears to develop a personal authentication system. To this end, similar ECGs were measured from thirty subjects using a pair of three electrodes attached behind each of the ears during resting state during which the standard Lead-I ECG was also simultaneously measured from both wrists as baseline ECG. The three ECG components, Q, R, and S, were extracted for each subject as classification features, and authentication accuracy was estimated using support vector machine (SVM) based on a 5×5-fold cross-validation. The mean authentication accuracies of Lead I-ECG and similar ECG were 90.41 ± 8.26% and 81.15 ± 7.54%, respectively. Considering a chance level of 3.33% (=1/30), the mean authentication performance of similar ECG could demonstrate the feasibility of using similar ECG measured behind the ears on the development of a personal authentication system.