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About

I was born in the district of Porto. I got a degree in Eletric and Computer Engeneering in 2001, a Master degre in Networks and Communication Services in 2004 and the PhD degree in Eletric and COmputer Engeneering in 2012, all from the Faculty of Engeneering of the University of Porto. I've been a collaborator of INESC TEC since 2001 and I'm currently a Senior Researcher at the Center of Telecommunications and Multimedia. I'm also an Invited Adjunct Professor at the School f Engeneering of the Polythecnic Institute of Porto. My current reseach interests include image and video processing, multimedia systems and computer vision. 

Interest
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Details

Details

011
Publications

2020

Improving Audiovisual Content Annotation Through a Semi-automated Process Based on Deep Learning

Authors
Vilaça, L; Viana, P; Carvalho, P; Andrade, T;

Publication
Advances in Intelligent Systems and Computing

Abstract
Over the last years, Deep Learning has become one of the most popular research fields of Artificial Intelligence. Several approaches have been developed to address conventional challenges of AI. In computer vision, these methods provide the means to solve tasks like image classification, object identification and extraction of features. In this paper, some approaches to face detection and recognition are presented and analyzed, in order to identify the one with the best performance. The main objective is to automate the annotation of a large dataset and to avoid the costy and time-consuming process of content annotation. The approach follows the concept of incremental learning and a R-CNN model was implemented. Tests were conducted with the objective of detecting and recognizing one personality within image and video content. Results coming from this initial automatic process are then made available to an auxiliary tool that enables further validation of the annotations prior to uploading them to the archive. Tests show that, even with a small size dataset, the results obtained are satisfactory. © 2020, Springer Nature Switzerland AG.

2019

Efficient CIEDE2000-based Color Similarity Decision for Computer Vision

Authors
Pereira, A; Carvalho, P; Coelho, G; Corte-Real, L;

Publication
IEEE Transactions on Circuits and Systems for Video Technology

Abstract

2019

Face Detection in Thermal Images with YOLOv3

Authors
Silva, G; Monteiro, R; Ferreira, A; Carvalho, P; Corte-Real, L;

Publication
Advances in Visual Computing - Lecture Notes in Computer Science

Abstract

2019

Stereo vision system for human motion analysis in a rehabilitation context

Authors
Matos, AC; Terroso, TA; Corte Real, L; Carvalho, P;

Publication
Computer Methods in Biomechanics and Biomedical Engineering: Imaging and Visualization

Abstract
The present demographic trends point to an increase in aged population and chronic diseases which symptoms can be alleviated through rehabilitation. The applicability of passive 3D reconstruction for motion tracking in a rehabilitation context was explored using a stereo camera. The camera was used to acquire depth and color information from which the 3D position of predefined joints was recovered based on: kinematic relationships, anthropometrically feasible lengths and temporal consistency. Finally, a set of quantitative measures were extracted to evaluate the performed rehabilitation exercises. Validation study using data provided by a marker based as ground-truth revealed that our proposal achieved errors within the range of state-of-the-art active markerless systems and visual evaluations done by physical therapists. The obtained results are promising and demonstrate that the developed methodology allows the analysis of human motion for a rehabilitation purpose. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.

2018

BMOG: boosted Gaussian Mixture Model with controlled complexity for background subtraction

Authors
Martins, I; Carvalho, P; Corte Real, L; Alba Castro, JL;

Publication
Pattern Analysis and Applications

Abstract

Supervised
thesis

2018

Optimizing customer response to direct marketing initiatives

Author
Francisco António Dias Amorim

Institution
UP-FEUP

2017

Image Processing for Event Detection in Retail Environments

Author
Pedro Daniel Nunes Querido

Institution
UP-FEUP

2015

Seguimento de grupos de pessoas utilizando vídeo

Author
Alexandra Maria Pereira Familiar

Institution
UP-FEUP

2015

People Re-identification in Multi-camera Environments

Author
Bruno Macedo Martins Santos Moreira

Institution
UP-FEUP

2015

Processamento de Vídeo para Promoção da Atividade Física

Author
Isaac José do Couto Lopes

Institution
UP-FEUP