Bi-Modal Authentication in Mobile Environments Using Session Variability Modelling
Petr Motlíček, Laurent El Shafey, Shafey Roy Wallace, Chris McCool, Sébastien Marcel, Petr Motlicek, Laurent El Shafey, Roy Wallace, Christopher Mccool · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · 2012
We present a state-of-the-art bi-modal authentica-tion system for mobile environments, using session vari-ability modelling. We examine inter-session variabil-ity modelling (ISV) and joint factor analysis (JFA) for both face and speaker authentication and evaluate our system on the largest bi-modal mobile authentication database available, the MOBIO database, with over 61 hours of audio-visual data captured by 150 people in uncontrolled environments on a mobile phone. Our sys-tem achieves 2.6 % and 9.7 % half total error rate for male and female trials respectively – relative improve-ments of 78 % and 27 % compared to previous results. 1.