Search Results for author: Kevin Hernandez-Diaz

Found 15 papers, 1 papers with code

Understanding and Improving CNNs with Complex Structure Tensor: A Biometrics Study

no code implementations24 Apr 2024 Kevin Hernandez-Diaz, Josef Bigun, Fernando Alonso-Fernandez

Experiments also demonstrated that our inputs, which were provided by mini complex conv-nets, combined with reduced CNN sizes, outperformed full-fledged, prevailing CNN architectures.

An Explainable Model-Agnostic Algorithm for CNN-based Biometrics Verification

no code implementations25 Jul 2023 Fernando Alonso-Fernandez, Kevin Hernandez-Diaz, Jose M. Buades, Prayag Tiwari, Josef Bigun

This paper describes an adaptation of the Local Interpretable Model-Agnostic Explanations (LIME) AI method to operate under a biometric verification setting.

One-Shot Learning for Periocular Recognition: Exploring the Effect of Domain Adaptation and Data Bias on Deep Representations

no code implementations11 Jul 2023 Kevin Hernandez-Diaz, Fernando Alonso-Fernandez, Josef Bigun

In this paper, we investigate the behavior of deep representations in widely used CNN models under extreme data scarcity for One-Shot periocular recognition, a biometric recognition task.

Domain Adaptation One-Shot Learning

Synthetic Data for Object Classification in Industrial Applications

no code implementations9 Dec 2022 August Baaz, Yonan Yonan, Kevin Hernandez-Diaz, Fernando Alonso-Fernandez, Felix Nilsson

In object classification, capturing a large number of images per object and in different conditions is not always possible and can be very time-consuming and tedious.

Classification Object

Image-Based Fire Detection in Industrial Environments with YOLOv4

no code implementations9 Dec 2022 Otto Zell, Joel Pålsson, Kevin Hernandez-Diaz, Fernando Alonso-Fernandez, Felix Nilsson

Accordingly, this work looks into the potential of AI to detect and recognize fires and reduce detection time using object detection on an image stream.

Fire Detection Object +2

On the Effect of Selfie Beautification Filters on Face Detection and Recognition

no code implementations17 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)

Face Detection

In-Bed Person Monitoring Using Thermal Infrared Sensors

no code implementations16 Jul 2021 Elias Josse, Amanda Nerborg, Kevin Hernandez-Diaz, Fernando Alonso-Fernandez

The world is expecting an aging population and shortage of healthcare professionals.

Cross-Spectral Periocular Recognition with Conditional Adversarial Networks

no code implementations26 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.

Writer Identification Using Microblogging Texts for Social Media Forensics

no code implementations31 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.

SqueezeFacePoseNet: Lightweight Face Verification Across Different Poses for Mobile Platforms

no code implementations16 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.

Face Verification Lightweight Face Recognition

Cloud-Based Face and Speech Recognition for Access Control Applications

no code implementations23 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.

Face Recognition speech-recognition +2

Periocular Recognition Using CNN Features Off-the-Shelf

no code implementations17 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.

Object Recognition

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