no code implementations • 27 Jul 2022 • Daniel DeAlcala, Aythami Morales, Ruben Tolosana, Alejandro Acien, Julian Fierrez, Santiago Hernandez, Miguel A. Ferrer, Moises Diaz
This work proposes two statistical approaches for the synthesis of keystroke biometric data based on Universal and User-dependent Models.
no code implementations • 15 Jul 2022 • Giuseppe Stragapede, Paula Delgado-Santos, Ruben Tolosana, Ruben Vera-Rodriguez, Richard Guest, Aythami Morales
One of the most popular traits in the literature is keystroke dynamics due to the large deployment of computers and mobile devices in our society.
no code implementations • 21 Jun 2022 • Pietro Melzi, Christian Rathgeb, Ruben Tolosana, Ruben Vera-Rodriguez, Christoph Busch
Privacy-enhancing technologies are technologies that implement fundamental data protection principles.
no code implementations • 6 Jun 2022 • Giuseppe Stragapede, Ruben Vera-Rodriguez, Ruben Tolosana, Aythami Morales
Mobile behavioral biometrics have become a popular topic of research, reaching promising results in terms of authentication, exploiting a multimodal combination of touchscreen and background sensor data.
no code implementations • 3 Jun 2022 • Paula Delgado-Santos, Ruben Tolosana, Richard Guest, Farzin Deravi, Ruben Vera-Rodriguez
Biometrics on mobile devices has attracted a lot of attention in recent years as it is considered a user-friendly authentication method.
no code implementations • 3 May 2022 • Ruben Tolosana, Ruben Vera-Rodriguez, Julian Fierrez, Javier Ortega-Garcia
Architectures based on Recurrent Neural Networks (RNNs) have been successfully applied to many different tasks such as speech or handwriting recognition with state-of-the-art results.
1 code implementation • 3 May 2022 • Ruben Tolosana, Ruben Vera-Rodriguez, Julian Fierrez
A complete analysis of our proposed biometric system is carried out regarding the discriminative power of each handwritten digit and the robustness when increasing the length of the password and the number of enrolment samples.
no code implementations • 8 Apr 2022 • Juan Carlos Ruiz-Garcia, Ruben Tolosana, Ruben Vera-Rodriguez, Julian Fierrez, Jaime Herreros-Rodriguez
This article presents a comprehensive analysis of the different tests proposed in the recent ChildCI framework, proving its potential for generating a better understanding of children's neuromotor and cognitive development along time, as well as their possible application in other research areas such as e-Health and e-Learning.
1 code implementation • 8 Apr 2022 • Pietro Melzi, Ruben Tolosana, Ruben Vera-Rodriguez
In this study, we perform extensive analysis and comparison of different scenarios in ECG biometric recognition.
no code implementations • 14 Mar 2022 • Giuseppe Stragapede, Ruben Vera-Rodriguez, Ruben Tolosana, Aythami Morales, Alejandro Acien, Gael Le Lan
Current mobile user authentication systems based on PIN codes, fingerprint, and face recognition have several shortcomings.
no code implementations • 24 Feb 2022 • Marcos Faundez-Zanuy, Julian Fierrez, Miguel A. Ferrer, Moises Diaz, Ruben Tolosana, Réjean Plamondon
Background- This paper summarizes the state-of-the-art and applications based on online handwritting signals with special emphasis on e-security and e-health fields.
no code implementations • 16 Dec 2021 • Roberto Daza, Daniel DeAlcala, Aythami Morales, Ruben Tolosana, Ruth Cobos, Julian Fierrez
The experimental framework is carried out using a public multimodal database for eye blink detection and attention level estimation called mEBAL, which comprises data from 38 students and multiples acquisition sensors, in particular, i) an electroencephalogram (EEG) band which provides the time signals coming from the student's cognitive information, and ii) RGB and NIR cameras to capture the students face gestures.
no code implementations • 8 Oct 2021 • Paula Delgado-Santos, Ruben Tolosana, Richard Guest, Ruben Vera, Farzin Deravi, Aythami Morales
This study proposes GaitPrivacyON, a novel mobile gait biometrics verification approach that provides accurate authentication results while preserving the sensitive information of the subject.
no code implementations • 2 Sep 2021 • Aythami Morales, Julian Fierrez, Alejandro Acien, Ruben Tolosana, Ignacio Serna
This work presents a new deep learning approach for keystroke biometrics based on a novel Distance Metric Learning method (DML).
1 code implementation • 13 Aug 2021 • Ruben Tolosana, Ruben Vera-Rodriguez, Carlos Gonzalez-Garcia, Julian Fierrez, Aythami Morales, Javier Ortega-Garcia, Juan Carlos Ruiz-Garcia, Sergio Romero-Tapiador, Santiago Rengifo, Miguel Caruana, Jiajia Jiang, Songxuan Lai, Lianwen Jin, Yecheng Zhu, Javier Galbally, Moises Diaz, Miguel Angel Ferrer, Marta Gomez-Barrero, Ilya Hodashinsky, Konstantin Sarin, Artem Slezkin, Marina Bardamova, Mikhail Svetlakov, Mohammad Saleem, Cintia Lia Szucs, Bence Kovari, Falk Pulsmeyer, Mohamad Wehbi, Dario Zanca, Sumaiya Ahmad, Sarthak Mishra, Suraiya Jabin
This article presents SVC-onGoing, an on-going competition for on-line signature verification where researchers can easily benchmark their systems against the state of the art in an open common platform using large-scale public databases, such as DeepSignDB and SVC2021_EvalDB, and standard experimental protocols.
1 code implementation • 1 Jun 2021 • Ruben Tolosana, Ruben Vera-Rodriguez, Carlos Gonzalez-Garcia, Julian Fierrez, Santiago Rengifo, Aythami Morales, Javier Ortega-Garcia, Juan Carlos Ruiz-Garcia, Sergio Romero-Tapiador, Jiajia Jiang, Songxuan Lai, Lianwen Jin, Yecheng Zhu, Javier Galbally, Moises Diaz, Miguel Angel Ferrer, Marta Gomez-Barrero, Ilya Hodashinsky, Konstantin Sarin, Artem Slezkin, Marina Bardamova, Mikhail Svetlakov, Mohammad Saleem, Cintia Lia Szücs, Bence Kovari, Falk Pulsmeyer, Mohamad Wehbi, Dario Zanca, Sumaiya Ahmad, Sarthak Mishra, Suraiya Jabin
This paper describes the experimental framework and results of the ICDAR 2021 Competition on On-Line Signature Verification (SVC 2021).
no code implementations • 2 Feb 2021 • Ruben Tolosana, Juan Carlos Ruiz-Garcia, Ruben Vera-Rodriguez, Jaime Herreros-Rodriguez, Sergio Romero-Tapiador, Aythami Morales, Julian Fierrez
This article provides an overview of recent research in Child-Computer Interaction with mobile devices and describe our framework ChildCI intended for: i) overcoming the lack of large-scale publicly available databases in the area, ii) generating a better understanding of the cognitive and neuromotor development of children along time, contrary to most previous studies in the literature focused on a single-session acquisition, and iii) enabling new applications in e-Learning and e-Health through the acquisition of additional information such as the school grades and children's disorders, among others.
1 code implementation • 1 Oct 2020 • Javier Hernandez-Ortega, Ruben Tolosana, Julian Fierrez, Aythami Morales
This work introduces a novel DeepFake detection framework based on physiological measurement.
no code implementations • 14 Sep 2020 • Ruben Tolosana, Paula Delgado-Santos, Andres Perez-Uribe, Ruben Vera-Rodriguez, Julian Fierrez, Aythami Morales
These two properties give a lot of flexibility to our synthesiser, e. g., as shown in our experiments, DeepWriteSYN can generate realistic handwriting variations of a given handwritten structure corresponding to the natural variation within a given population or a given subject.
1 code implementation • 9 Jun 2020 • Roberto Daza, Aythami Morales, Julian Fierrez, Ruben Tolosana
This work presents mEBAL, a multimodal database for eye blink detection and attention level estimation.
1 code implementation • 1 Jun 2020 • Javier Hernandez-Ortega, Roberto Daza, Aythami Morales, Julian Fierrez, Ruben Tolosana
In this study we estimate the heart rate from face videos for student assessment.
no code implementations • 15 May 2020 • Aythami Morales, Alejandro Acien, Julian Fierrez, John V. Monaco, Ruben Tolosana, Ruben Vera-Rodriguez, Javier Ortega-Garcia
Behavioral biometrics can be powerful tools in this fight.
no code implementations • 16 Apr 2020 • Ruben Tolosana, Sergio Romero-Tapiador, Julian Fierrez, Ruben Vera-Rodriguez
Media forensics has attracted a lot of attention in the last years in part due to the increasing concerns around DeepFakes.
no code implementations • 13 Apr 2020 • Oscar Delgado-Mohatar, Ruben Tolosana, Julian Fierrez, Aythami Morales
The world is becoming more interconnected every day.
Cryptography and Security Computers and Society
no code implementations • 27 Mar 2020 • Ester Gonzalez-Sosa, Pablo Perez, Ruben Tolosana, Redouane Kachach, Alvaro Villegas
In this study, we focus on the egocentric segmentation of arms to improve self-perception in Augmented Virtuality (AV).
1 code implementation • 19 Mar 2020 • Oscar Delgado-Mohatar, Julian Fierrez, Ruben Tolosana, Ruben Vera-Rodriguez
Blockchain technologies provide excellent architectures and practical tools for securing and managing the sensitive and private data stored in biometric templates, but at a cost.
1 code implementation • 24 Feb 2020 • Ruben Tolosana, Ruben Vera-Rodriguez, Julian Fierrez, Javier Ortega-Garcia
Deep learning has become a breathtaking technology in the last years, overcoming traditional handcrafted approaches and even humans for many different tasks.
1 code implementation • 28 Jan 2020 • Ruben Tolosana, Ruben Vera-Rodriguez, Julian Fierrez, Javier Ortega-Garcia
ii) We perform a complete analysis of the proposed approach considering both traditional authentication systems such as Dynamic Time Warping (DTW) and novel approaches based on Recurrent Neural Networks (RNNs).
2 code implementations • 1 Jan 2020 • Ruben Tolosana, Ruben Vera-Rodriguez, Julian Fierrez, Aythami Morales, Javier Ortega-Garcia
The free access to large-scale public databases, together with the fast progress of deep learning techniques, in particular Generative Adversarial Networks, have led to the generation of very realistic fake content with its corresponding implications towards society in this era of fake news.
2 code implementations • 13 Nov 2019 • João C. Neves, Ruben Tolosana, Ruben Vera-Rodriguez, Vasco Lopes, Hugo Proença, Julian Fierrez
The availability of large-scale facial databases, together with the remarkable progresses of deep learning technologies, in particular Generative Adversarial Networks (GANs), have led to the generation of extremely realistic fake facial content, raising obvious concerns about the potential for misuse.
no code implementations • 30 Apr 2019 • Oscar Delgado-Mohatar, Julian Fierrez, Ruben Tolosana, Ruben Vera-Rodriguez
We explore practical tradeoffs in blockchain-based biometric template storage.
Cryptography and Security
no code implementations • 28 Feb 2019 • Ruben Tolosana, Marta Gomez-Barrero, Christoph Busch, Javier Ortega-Garcia
The increased need for unattended authentication in multiple scenarios has motivated a wide deployment of biometric systems in the last few years.
1 code implementation • 1 Feb 2019 • Aythami Morales, Julian Fierrez, Ruben Vera-Rodriguez, Ruben Tolosana
Our method is based on an adversarial regularizer that introduces a sensitive information removal function in the learning objective.