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In the paper a ballistocardiographic sensor for remote monitoring of activity and vital parameters is presented. The sensor is mainly intended for use in monitoring systems supporting care of older people. It allows to detect occupancy of a…

Signal Processing · Electrical Eng. & Systems 2024-04-09 Natalia Osiadala , Marcin Kolakowski

This work introduces an innovative method for estimating attention levels (cognitive load) using an ensemble of facial analysis techniques applied to webcam videos. Our method is particularly useful, among others, in e-learning…

Human-Computer Interaction · Computer Science 2024-08-15 Roberto Daza , Luis F. Gomez , Julian Fierrez , Aythami Morales , Ruben Tolosana , Javier Ortega-Garcia

This work presents a new multimodal system for remote attention level estimation based on multimodal face analysis. Our multimodal approach uses different parameters and signals obtained from the behavior and physiological processes that…

Computer Vision and Pattern Recognition · Computer Science 2023-01-24 Roberto Daza , Luis F. Gomez , Aythami Morales , Julian Fierrez , Ruben Tolosana , Ruth Cobos , Javier Ortega-Garcia

Mobile devices and technologies have become increasingly popular, offering comparable storage and computational capabilities to desktop computers allowing users to store and interact with sensitive and private information. The security and…

Cryptography and Security · Computer Science 2020-05-12 Mohammed Abuhamad , Ahmed Abusnaina , DaeHun Nyang , David Mohaisen

This work presents mEBAL, a multimodal database for eye blink detection and attention level estimation. The eye blink frequency is related to the cognitive activity and automatic detectors of eye blinks have been proposed for many tasks…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Roberto Daza , Aythami Morales , Julian Fierrez , Ruben Tolosana

COVID-19 has driven most schools to remote learning through online meeting software such as Zoom and Google Meet. Although this trend helps students continue learning without in-person classes, it removes a vital tool that teachers use to…

Machine Learning · Computer Science 2021-09-24 Daben Kyle Liu

This study demonstrates how facial biometrics, acquired using multi-spectral sensors, such as RGB, depth, and infrared, assist the data accumulation in the process of authorizing users of automated and semi-automated access systems. This…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 K. Lai , S. Samoil , S. N. Yanushkevich

This study presents high-throughput, real-time multi-agent affective computing framework designed to enhance classroom learning through emotional state monitoring. As large classroom sizes and limited teacher student interaction…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Hai Nguyen , Hieu Dao , Hung Nguyen , Nam Vu , Cong Tran

Student engagement plays a vital role in academic success with high engagement often linked to positive educational outcomes. Traditionally, student engagement is measured through self-reports, which are both labour-intensive and not…

Human-Computer Interaction · Computer Science 2024-07-22 Soundariya Ananthan , Nan Gao , Flora D. Salim

Current mobile user authentication systems based on PIN codes, fingerprint, and face recognition have several shortcomings. Such limitations have been addressed in the literature by exploring the feasibility of passive authentication on…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Giuseppe Stragapede , Ruben Vera-Rodriguez , Ruben Tolosana , Aythami Morales , Alejandro Acien , Gael Le Lan

This work presents a feasibility study of remote attention level estimation based on eye blink frequency. We first propose an eye blink detection system based on Convolutional Neural Networks (CNNs), very competitive with respect to related…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Roberto Daza , Daniel DeAlcala , Aythami Morales , Ruben Tolosana , Ruth Cobos , Julian Fierrez

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. The database includes eight unimodal biometric traits, namely:…

The amount of secure data being stored on mobile devices has grown immensely in recent years. However, the security measures protecting this data have stayed static, with few improvements being done to the vulnerabilities of current…

Cryptography and Security · Computer Science 2022-05-18 Laura Pryor , Jacob Mallet , Rushit Dave , Naeem Seliya , Mounika Vanamala , Evelyn Sowells Boone

In this work, we study a novel problem which focuses on person identification while performing daily activities. Learning biometric features from RGB videos is challenging due to spatio-temporal complexity and presence of appearance biases…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Shehreen Azad , Yogesh Singh Rawat

This work introduces a new multispectral database and novel approaches for eyeblink detection in RGB and Near-Infrared (NIR) individual images. Our contributed dataset (mEBAL2, multimodal Eye Blink and Attention Level estimation, Version 2)…

Computer Vision and Pattern Recognition · Computer Science 2024-04-29 Roberto Daza , Aythami Morales , Julian Fierrez , Ruben Tolosana , Ruben Vera-Rodriguez

In this paper, we propose an intelligent embedded system for monitoring class attendance and sending the attendance list to a remote computer. The proposed system consists of two parts : an embedded device (Raspberry with PI camera) for…

Artificial Intelligence · Computer Science 2024-06-21 Touzene Abderraouf , Abed Abdeljalil Wassim , Slimane Larabi

We introduce the Visual Experience Dataset (VEDB), a compilation of over 240 hours of egocentric video combined with gaze- and head-tracking data that offers an unprecedented view of the visual world as experienced by human observers. The…

Behavioral biometrics based on smartphone motion sensors are growing in popularity for authentication purposes. In this study, AirSignatureDB is presented: a new publicly accessible dataset of in-air signatures collected from 108…

Human-Computer Interaction · Computer Science 2025-08-13 Marta Robledo-Moreno , Ruben Vera-Rodriguez , Ruben Tolosana , Javier Ortega-Garcia , Andres Huergo , Julian Fierrez

The monitoring and prediction of in-class student activities is of paramount importance for the comprehension of engagement and the enhancement of pedagogical efficacy. The accurate detection of these activities enables educators to modify…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Luis Marquez-Carpintero , Sergio Suescun-Ferrandiz , Monica Pina-Navarro , Miguel Cazorla , Francisco Gomez-Donoso

Wearable sensors, such as smartwatches, have become increasingly prevalent across domains like healthcare, sports, and education, enabling continuous monitoring of physiological and behavioral data. In the context of education, these…

Human-Computer Interaction · Computer Science 2025-12-03 Alvaro Becerra , Pablo Villegas , Ruth Cobos