241 citations · 508 across the 14 of their papers we have counts for
20 papers
Curvature Under Attack in hZACH-ViT: Gauge Symmetry, Boundary Saturation, and Adversarial Failure
Athanasios Angelakis, Marta Gomez-Barrero
Curvature is often treated as an intrinsic property of a representation, although its empirical effect also depends on coordinate scale, learned logit temperature, and numerical sa…
From ECG Signals to Representative-Morphology Heatmaps for Biometric Recognition
Athanasios Angelakis, Marta Gomez-Barrero
Electrocardiography (ECG) contains subject-specific morphology that supports biometric recognition, yet image-based performance depends on how the waveform is rendered. We introduc…
Compact Vision Models for Iris Presentation Attack Detection under Presentation Attack Instrument Shift and Environmental Degradation
Athanasios Angelakis, Marta Gomez-Barrero
Iris presentation attack detection (PAD) is security-critical when a subsystem that appears reliable during development encounters presentation attack instruments (PAIs) or acquisi…
Extending ZACH-ViT to Robust Medical Imaging: Corruption and Adversarial Stress Testing in Low-Data Regimes
Athanasios Angelakis, Marta Gomez-Barrero
The recently introduced ZACH-ViT (Zero-token Adaptive Compact Hierarchical Vision Transformer) formalized a compact permutation-invariant Vision Transformer for medical imaging and…
Reversing the Irreversible: A Survey on Inverse Biometrics
Marta Gomez-Barrero, Javier Galbally
With the widespread use of biometric recognition, several issues related to the privacy and security provided by this technology have been recently raised and analysed. As a result…
General Framework to Evaluate Unlinkability in Biometric Template Protection Systems
Marta Gomez-Barrero, Javier Galbally, Christian Rathgeb +1
The wide deployment of biometric recognition systems in the last two decades has raised privacy concerns regarding the storage and use of biometric data. As a consequence, the ISO/…
Introduction to Presentation Attack Detection in Iris Biometrics and Recent Advances
Aythami Morales, Julian Fierrez, Javier Galbally +1
Iris recognition technology has attracted an increasing interest in the last decades in which we have witnessed a migration from research laboratories to real world applications. T…
Differential Anomaly Detection for Facial Images
Mathias Ibsen, Lázaro J. González-Soler, Christian Rathgeb +3
Due to their convenience and high accuracy, face recognition systems are widely employed in governmental and personal security applications to automatically recognise individuals.…
SVC-onGoing: Signature Verification Competition
Ruben Tolosana, Ruben Vera-Rodriguez, Carlos Gonzalez-Garcia +29
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 a…
ICDAR 2021 Competition on On-Line Signature Verification
Ruben Tolosana, Ruben Vera-Rodriguez, Carlos Gonzalez-Garcia +28
This paper describes the experimental framework and results of the ICDAR 2021 Competition on On-Line Signature Verification (SVC 2021). The goal of SVC 2021 is to evaluate the limi…
On the Generalisation Capabilities of Fisher Vector based Face Presentation Attack Detection
Lázaro J. González-Soler, Marta Gomez-Barrero, Christoph Busch
In the last decades, the broad development experienced by biometric systems has unveiled several threats which may decrease their trustworthiness. Those are attack presentations wh…
Biometrics in the Era of COVID-19: Challenges and Opportunities
Marta Gomez-Barrero, Pawel Drozdowski, Christian Rathgeb +7
Since early 2020 the COVID-19 pandemic has had a considerable impact on many aspects of daily life. A range of different measures have been implemented worldwide to reduce the rate…
Selfie Periocular Verification using an Efficient Super-Resolution Approach
Juan Tapia, Andres Valenzuela, Rodrigo Lara +2
Selfie-based biometrics has great potential for a wide range of applications since, e.g. periocular verification is contactless and is safe to use in pandemics such as COVID-19, wh…
Texture-based Presentation Attack Detection for Automatic Speaker Verification
Lazaro J. Gonzalez-Soler, Jose Patino, Marta Gomez-Barrero +3
Biometric systems are nowadays employed across a broad range of applications. They provide high security and efficiency and, in many cases, are user friendly. Despite these and oth…
On the Generalisation Capabilities of Fingerprint Presentation Attack Detection Methods in the Short Wave Infrared Domain
Jascha Kolberg, Marta Gomez-Barrero, Christoph Busch
Nowadays, fingerprint-based biometric recognition systems are becoming increasingly popular. However, in spite of their numerous advantages, biometric capture devices are usually e…
Anomaly Detection with Convolutional Autoencoders for Fingerprint Presentation Attack Detection
Jascha Kolberg, Marcel Grimmer, Marta Gomez-Barrero +1
In recent years, the popularity of fingerprint-based biometric authentication systems significantly increased. However, together with many advantages, biometric systems are still v…
Morphing Attack Detection -- Database, Evaluation Platform and Benchmarking
Kiran Raja, Matteo Ferrara, Annalisa Franco +18
Morphing attacks have posed a severe threat to Face Recognition System (FRS). Despite the number of advancements reported in recent works, we note serious open issues such as indep…
Fingerprint Presentation Attack Detection Based on Local Features Encoding for Unknown Attacks
Lázaro J. González-Soler, Marta Gomez-Barrero, Leonardo Chang +2
Fingerprint-based biometric systems have experienced a large development in the last years. Despite their many advantages, they are still vulnerable to presentation attacks (PAs).…
Biometric Presentation Attack Detection: Beyond the Visible Spectrum
Ruben Tolosana, Marta Gomez-Barrero, Christoph Busch +1
The increased need for unattended authentication in multiple scenarios has motivated a wide deployment of biometric systems in the last few years. This has in turn led to the discl…
Homomorphic Encryption for Speaker Recognition: Protection of Biometric Templates and Vendor Model Parameters
Andreas Nautsch, Sergey Isadskiy, Jascha Kolberg +2
Data privacy is crucial when dealing with biometric data. Accounting for the latest European data privacy regulation and payment service directive, biometric template protection is…