Concept

Biometrics

Related publications (221)

Variance Reduction Techniques in Biometric Authentication

In this paper, several approaches that can be used to improve biometric authentication applications are proposed. The idea is inspired by the ensemble approach, i.e., the use of several classifiers to solve a problem. Compared to using only one classifier, ...

IDIAP2003

Why Do Multi-Stream, Multi-Band and Multi-Modal Approaches Work on Biometric User Authentication Tasks?

Samy Bengio, Norman Hoon Thian Poh

Multi-band, multi-stream and multi-modal approaches have proven to be very successful both in experiments and in real-life applications, among which speech recognition and biometric authentication are of particular interest here. However, there is a lack o ...

IDIAP2003

Multimodal Identity Verification at IDIAP

This document presents an overview on multimodal identity verification in the context of the BANCA project. In the first part, we detail multimodal identity verification and the methods used to create a system and to compute its performance. In the second ...

IDIAP2003

An Investigation of Spectral Subband Centroids for Speaker Authentication

Samy Bengio, Norman Hoon Thian Poh

Most conventional features used in speaker authentication are based on estimation of spectral envelopes in one way or another, in the form of cepstrums, e.g., Mel-scale Filterbank Cepstrum Coefficients (MFCCs), Linear-scale Filterbank Cepstrum Coefficients ...

IDIAP2003

Face Verification using LDA and MLP on the BANCA database

Sébastien Marcel

In this paper, we propose a system for face verification. It describes in detail each stage of the system: the modeling of the face, the extraction of relevant features and the classification of the input face as a client or an impostor. This system is bas ...

IDIAP2003

The BANCA Database and Evaluation Protocol

Jean-Philippe Thiran, Vlad Popovici

In this paper we describe the acquisition and content of a new large, realistic and challenging multi-modal database intended for training and testing multi-modal verification systems. The BANCA database was captured in four European languages in two modal ...

SPIE2003

A Multi-sample Multi-source Model for Biometric Authentication

Samy Bengio, Norman Hoon Thian Poh

In this study, two techniques that can improve the authentication process are examined: (i) multiple samples and (ii) multiple biometric sources. We propose the fusion of multiple samples obtained from multiple biometric sources at the score level. By usin ...

IDIAP2002

A Multi-sample Multi-source Model for Biometric Authentication

Samy Bengio, Norman Hoon Thian Poh

2002

User-Customized Password Speaker Verification based on HMM/ANN and GMM Models

Hervé Bourlard

In this paper, we present a new approach towards user-custom-ized password speaker verification combining the advantages of hybrid HMM/ANN systems, using Artificial Neural Networks (ANN) to estimate emission probabilities of Hidden Markov Models, and Gaus ...

IDIAP2002

User-Customized Password Speaker Verification based on HMM/ANN and GMM Models

Hervé Bourlard

2002

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