Comput. Biol. Med. - A novel feature ranking algorithm for biometric recognition with PPG signals.

Tópicos

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Resumo

This study is intended for describing the application of the Photoplethysmography (PPG) signal and the time domain features acquired from its first and second derivatives for biometric identification. For this purpose, a sum of 40 features has been extracted and a feature-ranking algorithm is proposed. This proposed algorithm calculates the contribution of each feature to biometric recognition and collocates the features, the contribution of which is from great to small. While identifying the contribution of the features, the Euclidean distance and absolute distance formulas are used. The efficiency of the proposed algorithms is demonstrated by the results of the k-NN (k-nearest neighbor) classifier applications of the features. During application, each 15-period-PPG signal belonging to two different durations from each of the thirty healthy subjects were used with a PPG data acquisition card. The first PPG signals recorded from the subjects were evaluated as the 1st configuration; the PPG signals recorded later at a different time as the 2nd configuration and the combination of both were evaluated as the 3rd configuration. When the results were evaluated for the k-NN classifier model created along with the proposed algorithm, an identification of 90.44% for the 1st configuration, 94.44% for the 2nd configuration, and 87.22% for the 3rd configuration has successfully been attained. The obtained results showed that both the proposed algorithm and the biometric identification model based on this developed PPG signal are very promising for contactless recognizing the people with the proposed method.

Resumo Limpo

studi intend describ applic photoplethysmographi ppg signal time domain featur acquir first second deriv biometr identif purpos sum featur extract featurerank algorithm propos propos algorithm calcul contribut featur biometr recognit colloc featur contribut great small identifi contribut featur euclidean distanc absolut distanc formula use effici propos algorithm demonstr result knn knearest neighbor classifi applic featur applic periodppg signal belong two differ durat thirti healthi subject use ppg data acquisit card first ppg signal record subject evalu st configur ppg signal record later differ time nd configur combin evalu rd configur result evalu knn classifi model creat along propos algorithm identif st configur nd configur rd configur success attain obtain result show propos algorithm biometr identif model base develop ppg signal promis contactless recogn peopl propos method

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