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Article Dans Une Revue IET Biometrics Année : 2023

Deep features fusion for user authentication based on human activity

Résumé

The exponential growth in the use of smartphones means that users must constantly be concerned about the security and privacy of mobile data because the loss of a mobile device could compromise personal information. To address this issue, continuous authentication systems have been proposed, in which users are monitored transparently after initial access to the smartphone. In this study, the authors address the problem of user authentication by considering human activities as behavioural biometric information. The authors convert the behavioural biometric data (considered as time series) into a 2D colour image. This transformation process keeps all the characteristics of the behavioural signal. Time series does not receive any filtering operation with this transformation, and the method is reversible. This signal‐to‐image transformation allows us to use the 2D convolutional networks to build efficient deep feature vectors. This allows them to compare these feature vectors to the reference template vectors to compute the performance metric. The authors evaluate the performance of the authentication system in terms of Equal Error Rate on a benchmark University of Californy, Irvine Human Activity Recognition dataset, and they show the efficiency of the approach.
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hal-04379327 , version 1 (27-05-2024)

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Yris Brice Wandji Piugie, Christophe Charrier, Joël Di Manno, Christophe Rosenberger. Deep features fusion for user authentication based on human activity. IET Biometrics, 2023, 12 (4), pp.222-234. ⟨10.1049/bme2.12115⟩. ⟨hal-04379327⟩
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