no code implementations • 12 Apr 2022 • Fernando Alonso-Fernandez, Reuben A. Farrugia, Julian Fierrez, Josef Bigun
Such techniques are designed to restore generic images and therefore do not exploit the specific structure found in biometric images (e. g. iris or faces), which causes the solution to be sub-optimal.
1 code implementation • 11 Mar 2022 • Pontus Hedman, Vasilios Skepetzis, Kevin Hernandez-Diaz, Josef Bigun, Fernando Alonso-Fernandez
To help in counteracting such issues, we contribute with a database of facial images that includes several manipulations.
no code implementations • 26 Jan 2022 • Fernando Alonso-Fernandez, Josef Bigun
We describe a technical solution implemented at Halmstad University to automatise assessment and reporting of results of paper-based quiz exams.
no code implementations • 25 Jan 2022 • Adrian Leo Hagström, Rustam Stanikzai, Josef Bigun, Fernando Alonso-Fernandez
With ten enrolment samples, the Top-1 accuracy with deep features is around 94%, and reaches nearly 100% by Top-10.
no code implementations • 17 Nov 2021 • Fernando Alonso-Fernandez, Julian Fierrez, Javier Ortega-Garcia
Biometric technology has been increasingly deployed in the past decade, offering greater security and convenience than traditional methods of personal recognition.
no code implementations • 17 Nov 2021 • Norman Poh, Thirimachos Bourlai, Josef Kittler, Lorene Allano, Fernando Alonso-Fernandez, Onkar Ambekar, John Baker, Bernadette Dorizzi, Omolara Fatukasi, Julian Fierrez, Harald Ganster, Javier Ortega-Garcia, Donald Maurer, Albert Ali Salah, Tobias Scheidat, Claus Vielhauer
The cost-sensitive evaluation, on the other hand, investigates how well a fusion algorithm can perform given restricted computation and in the presence of software and hardware failures, resulting in errors such as failure-to-acquire and failure-to-match.
no code implementations • 17 Nov 2021 • Javier Ortega-Garcia, Julian Fierrez, Fernando Alonso-Fernandez, Javier Galbally, Manuel R Freire, Joaquin Gonzalez-Rodriguez, Carmen Garcia-Mateo, Jose-Luis Alba-Castro, Elisardo Gonzalez-Agulla, Enrique Otero-Muras, Sonia Garcia-Salicetti, Lorene Allano, Bao Ly-Van, Bernadette Dorizzi, Josef Kittler, Thirimachos Bourlai, Norman Poh, Farzin Deravi, Ming NR Ng, Michael Fairhurst, Jean Hennebert, Andreas Humm, Massimo Tistarelli, Linda Brodo, Jonas Richiardi, Andrezj Drygajlo, Harald Ganster, Federico M Sukno, Sri-Kaushik Pavani, Alejandro Frangi, Lale Akarun, Arman Savran
It is comprised of more than 600 individuals acquired simultaneously in three scenarios: 1) over the Internet, 2) in an office environment with desktop PC, and 3) in indoor/outdoor environments with mobile portable hardware.
no code implementations • 14 Nov 2021 • Fernando Alonso-Fernandez, Julian Fierrez, Javier Ortega-Garcia, Joaquin Gonzalez-Rodriguez, Hartwig Fronthaler, Klaus Kollreider, Josef Bigun
One of the open issues in fingerprint verification is the lack of robustness against image-quality degradation.
no code implementations • 2 Nov 2021 • Julian Fierrez, Javier Galbally, Javier Ortega-Garcia, Manuel R Freire, Fernando Alonso-Fernandez, Daniel Ramos, Doroteo Torre Toledano, Joaquin Gonzalez-Rodriguez, Juan A Siguenza, Javier Garrido-Salas, E Anguiano, Guillermo Gonzalez-de-Rivera, Ricardo Ribalda, Marcos Faundez-Zanuy, JA Ortega, Valentín Cardeñoso-Payo, A Viloria, Carlos E Vivaracho, Q Isaac Moro, Juan J Igarza, J Sanchez, Inmaculada Hernaez, Carlos Orrite-Urunuela, Francisco Martinez-Contreras, Juan José Gracia-Roche
A new multimodal biometric database, acquired in the framework of the BiosecurID project, is presented together with the description of the acquisition setup and protocol.
no code implementations • 2 Nov 2021 • Fredrik Svanström, Fernando Alonso-Fernandez, Cristofer Englund
To counteract the mentioned issues and allow fundamental studies with a common public benchmark, we contribute with an annotated multi-sensor database for drone detection that includes infrared and visible videos and audio files.
no code implementations • 2 Nov 2021 • Javier Galbally, Fernando Alonso-Fernandez, Julian Fierrez, Javier Ortega-Garcia
A new software-based liveness detection approach using a novel fingerprint parameterization based on quality related features is proposed.
no code implementations • 30 Oct 2021 • Fernando Alonso-Fernandez, Pedro Tome-Gonzalez, Virginia Ruiz-Albacete, Javier Ortega-Garcia
We extract characteristic SIFT feature points in scale space and perform matching based on the texture information around the feature points using the SIFT operator.
no code implementations • 30 Oct 2021 • Virginia Ruiz-Albacete, Pedro Tome-Gonzalez, Fernando Alonso-Fernandez, Javier Galbally, Julian Fierrez, Javier Ortega-Garcia
In this contribution, the vulnerabilities of iris-based recognition systems to direct attacks are studied.
no code implementations • 20 Oct 2021 • Anton Persson, Niklas Dymne, Fernando Alonso-Fernandez
This work is aimed at creating a system that can classify different types of plastics by using picture analysis, in particular, black plastics of the type Polystyrene (PS) and Acrylonitrile Butadiene Styrene (ABS).
no code implementations • 17 Oct 2021 • Pontus Hedman, Vasilios Skepetzis, Kevin Hernandez-Diaz, Josef Bigun, Fernando Alonso-Fernandez
Although there is room for improvement, when neither U-NET reconstruction nor training with filtered images is applied, the accuracy with filters that severely occlude the eye is <72% (identification) and >12% (EER)
no code implementations • 16 Jul 2021 • Elias Josse, Amanda Nerborg, Kevin Hernandez-Diaz, Fernando Alonso-Fernandez
The world is expecting an aging population and shortage of healthcare professionals.
no code implementations • 7 Apr 2021 • Cristofer Englund, Eren Erdal Aksoy, Fernando Alonso-Fernandez, Martin Daniel Cooney, Sepideh Pashami, Bjorn Astrand
This paper describes AI perspectives in SCC and gives an overview of AI-based technologies used in traffic to enable road vehicle automation and smart traffic control.
no code implementations • 31 Mar 2021 • Fernando Alonso-Fernandez, Kevin Hernandez Diaz, Silvia Ramis, Francisco J. Perales, Josef Bigun
Also, the use of mobile devices has exploded, with the pandemic further accelerating the migration to digital services.
no code implementations • 26 Aug 2020 • Kevin Hernandez-Diaz, Fernando Alonso-Fernandez, Josef Bigun
Recognition experiments are done using a number of off-the-shelf periocular comparators based both on hand-crafted features and CNN descriptors.
no code implementations • 31 Jul 2020 • Fernando Alonso-Fernandez, Nicole Mariah Sharon Belvisi, Kevin Hernandez-Diaz, Naveed Muhammad, Josef Bigun
With a large number of training Tweets (>500), a good accuracy (Rank-5>80%) is achievable with only a few dozens of test Tweets, even with several thousands of authors.
no code implementations • 16 Jul 2020 • Fernando Alonso-Fernandez, Javier Barrachina, Kevin Hernandez-Diaz, Josef Bigun
Accordingly, we address the challenge of developing a lightweight face recognition network of just a few megabytes that can operate with sufficient accuracy in comparison to much larger models.
1 code implementation • 14 Jul 2020 • Fredrik Svanstrom, Cristofer Englund, Fernando Alonso-Fernandez
Besides the common video and audio sensors, the system also includes a thermal infrared camera, which is shown to be a feasible solution to the drone detection task.
no code implementations • 16 May 2020 • Josef Bigun, Fernando Alonso-Fernandez
To that end, a novel multi-scale minutia model where location, direction, and scale of minutia parameters are steerable, without the creation of uncontrollable minutia is also presented.
no code implementations • 23 Apr 2020 • Felix Nilsson, Jens Jakobsen, Fernando Alonso-Fernandez
Accordingly, the goal is to develop a solution which can measure the operational state using the input from a video camera capturing a factory floor.
no code implementations • 23 Apr 2020 • Nathalie Tkauc, Thao Tran, Kevin Hernandez-Diaz, Fernando Alonso-Fernandez
This paper describes the implementation of a system to recognize employees and visitors wanting to gain access to a physical office through face images and speech-to-text recognition.
no code implementations • 24 Mar 2020 • Nicole Mariah Sharon Belvisi, Naveed Muhammad, Fernando Alonso-Fernandez
In this work, we aim at identifying authors of tweet messages, which are limited to 280 characters.
no code implementations • 14 Feb 2020 • Kevin Hernandez Diaz, Fernando Alonso-Fernandez, Josef Bigun
Cross-spectral verification remains a big issue in biometrics, especially for the ocular area due to differences in the reflected features in the images depending on the region and spectrum used.
no code implementations • 21 Feb 2019 • Fernando Alonso-Fernandez, Kiran B. Raja, R. Raghavendra, Cristoph Busch, Josef Bigun, Ruben Vera-Rodriguez, Julian Fierrez
Experiments are also reported with a database of VIS images from different smartphones.
no code implementations • 23 Oct 2018 • Fernando Alonso-Fernandez, Josef Bigun, Cristofer Englund
Periocular is the facial region in the immediate vicinity of the eye.
no code implementations • 23 Oct 2018 • Ram P. Krish, Julian Fierrez, Daniel Ramos, Fernando Alonso-Fernandez, Josef Bigun
We report significant improvements in the rank identification accuracies when these minutiae matchers are augmented with our proposed algorithm based on rare minutiae features.
no code implementations • 23 Oct 2018 • Dimitrios Varytimidis, Fernando Alonso-Fernandez, Boris Duran, Cristofer Englund
Action and intention recognition of pedestrians in urban settings are challenging problems for Advanced Driver Assistance Systems as well as future autonomous vehicles to maintain smooth and safe traffic.
no code implementations • 23 Oct 2018 • Frida Femling, Adam Olsson, Fernando Alonso-Fernandez
This paper describes an approach of creating a system identifying fruit and vegetables in the retail market using images captured with a video camera attached to the system.
no code implementations • 8 Oct 2018 • Fernando Alonso-Fernandez, Josef Bigun
Periocular refers to the facial region in the vicinity of the eye, including eyelids, lashes and eyebrows.
no code implementations • 17 Sep 2018 • Kevin Hernandez-Diaz, Fernando Alonso-Fernandez, Josef Bigun
Periocular refers to the region around the eye, including sclera, eyelids, lashes, brows and skin.