Publications de Tiago De Freitas Pereira

Fairness in Biometrics: a figure of merit to assess biometric verification systems

Sébastien Marcel, Tiago De Freitas Pereira

Machine learning-based (ML) systems are being largely deployed since the last decade in a myriad of scenarios impacting several instances in our daily lives. With this vast sort of applications, aspects of fairness start to rise in the spotlight due to the ...

2020

Heterogeneous Face Recognition Using Domain Specific Units

Sébastien Marcel, André Anjos, Tiago De Freitas Pereira

The task of Heterogeneous Face Recognition consists in matching face images that are sensed in different domains, such as sketches to photographs (visual spectra images), thermal images to photographs or near-infrared images to photographs. In this work we ...

2019

A Comprehensive Experimental and Reproducible Study on Selfie Biometrics in Multistream and Heterogeneous Settings

Sébastien Marcel, Guillaume Heusch, Tiago De Freitas Pereira

This contribution presents a new database to address current challenges in face recognition. It contains face video sequences of 75 individuals acquired either through a laptop webcam or when mimicking the front-facing camera of a smartphone. Sequences hav ...

2019

Continuously Reproducing Toolchains in Pattern Recognition and Machine Learning Experiments

Sébastien Marcel, André Anjos, Tiago De Freitas Pereira, Amir Mohammadi

Pattern recognition and machine learning research work often contains experimental results on real-world data, which corroborates hypotheses and provides a canvas for the development and comparison of new ideas. Results, in this context, are typically summ ...

2017

Heterogeneous Face Recognition using Inter-Session Variability Modelling

Sébastien Marcel, Tiago De Freitas Pereira

The task of Heterogeneous Face Recognition consists in to match face images that were sensed in different modalities, such as sketches to photographs, thermal images to photographs or near infrared to photographs. In this preliminary work we introduce a no ...

IEEE2016

Periocular Biometrics in Mobile Environment

Sébastien Marcel, Tiago De Freitas Pereira

In this work we study periocular biometrics in a challenging scenario: a mobile environment, where person recognition can take place on a mobile device. The proposed technique, that models session variability, is evaluated for the authentication task on th ...

IEEE2015

Face liveness detection using dynamic texture

Sébastien Marcel, André Anjos, Tiago De Freitas Pereira

User authentication is an important step to protect information, and in this context, face biometrics is potentially advantageous. Face biometrics is natural, intuitive, easy to use, and less human-invasive. Unfortunately, recent work has revealed that fac ...

2014

The 2nd competition on counter measures to 2D face spoofing attacks

Sébastien Marcel, André Anjos, Ivana Chingovska, Tiago De Freitas Pereira, Shubham Bansal, Naser Damer, Dushyant Goyal, Tarun Krishna, Shubham Gupta

As a crucial security problem, anti-spoofing in biometrics, and particularly for the face modality, has achieved great progress in the recent years. Still, new threats arrive in form of better, more realistic and more sophisticated spoofing attacks. The ob ...

2013

Can face anti-spoofing countermeasures work in a real world scenario?

Sébastien Marcel, André Anjos, Tiago De Freitas Pereira

User authentication is an important step to protect in- formation and in this field face biometrics is advantageous. Face biometrics is natural, easy to use and less human-invasive. Unfortunately, recent work has revealed that face biometrics is vulnerable ...

2013

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Tiago De Freitas Pereira

Fairness in Biometrics: a figure of merit to assess biometric verification systems

Heterogeneous Face Recognition Using Domain Specific Units

Learning How To Recognize Faces In Heterogeneous Environments

A Comprehensive Experimental and Reproducible Study on Selfie Biometrics in Multistream and Heterogeneous Settings

Continuously Reproducing Toolchains in Pattern Recognition and Machine Learning Experiments

Heterogeneous Face Recognition using Inter-Session Variability Modelling

Periocular Biometrics in Mobile Environment

Face liveness detection using dynamic texture

The 2nd competition on counter measures to 2D face spoofing attacks

Can face anti-spoofing countermeasures work in a real world scenario?

Graph Chatbot

Chattez avec Graph Search

Fairness in Biometrics: a figure of merit to assess biometric verification systems

Face liveness detection using dynamic texture

Learning How To Recognize Faces In Heterogeneous Environments

A Comprehensive Experimental and Reproducible Study on Selfie Biometrics in Multistream and Heterogeneous Settings

Can face anti-spoofing countermeasures work in a real world scenario?

Heterogeneous Face Recognition using Inter-Session Variability Modelling

Continuously Reproducing Toolchains in Pattern Recognition and Machine Learning Experiments

Heterogeneous Face Recognition Using Domain Specific Units

The 2nd competition on counter measures to 2D face spoofing attacks

Periocular Biometrics in Mobile Environment