Dijana Petrovska-Delacrétaz

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This paper presents an overview of a state-of-the-art text-independent speaker verification system. First, an introduction proposes a modular scheme of the training and test phases of a speaker verification system. Then, the most commonly speech parameteriza-tion used in speaker verification, namely, cepstral analysis, is detailed. Gaussian mixture(More)
With the increasing use of biometrics, more and more concerns are being raised about the privacy of the personal biometric data. Conventional biometric systems store biometric templates in a database. This may lead to the possibility of tracking personal information stored in one database by getting access to another database through cross-database(More)
This document describes the acquisition protocols of MyIDea, a new large and realistic multimodal biometric database designed to conduct research experiments in Identity Verification (IV). The key points of MyIDea are threefold: (1) it is strongly multimodal; (2) it implements realistic scenarios in an open-set framework; (3) it uses sensors of different(More)
This paper evaluates the performance of the twelve primary systems submitted to the evaluation on speaker verification in the context of a mobile environment using the MOBIO database. The mobile environment provides a challenging and realistic test-bed for current state-of-the-art speaker verification techniques. Results in terms of equal error rate (EER),(More)
A biometric system is basically a pattern recognition system. Biometrics based user authentication system serve as a reliable means for meeting the challenges in today's world of information and network security. It has gained enormous interest by scientists and researchers. Unimodal biometric systems that employ only a single biometric trait fails to(More)
R ´ ESUMÉ Cet article présente une description de la base de données POLYCOST qui est dédiée aux applications de reconnaissance du locuteurà travers les lignes téléphoniques. Les car-actéristiques de la base de données sont : large corpusà con-tenu varié (> 100 locuteurs), anglais parlé par desétrangers, chiffres lus et parole libre, enregistrementà travers(More)
— Biometrics lack revocability and privacy while cryptography cannot detect the user's identity. By obtaining cryptographic keys using biometrics, one can achieve the properties such as revocability, assurance about user's identity, and privacy. In this paper, we propose a multi-biometric based cryptographic key regeneration scheme. Since left and right(More)