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de interesse
Detalhes

Detalhes

  • Nome

    António Ribeiro Sousa
  • Cargo

    Investigador Sénior
  • Desde

    01 outubro 2012
Publicações

2024

Automatic Food Labels Reading System

Autores
Pires, D; Filipe, V; Gonçalves, L; Sousa, A;

Publicação
Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST

Abstract
Growing obesity has been a worldwide issue for several years. This is the outcome of common nutritional disorders which results in obese individuals who are prone to many diseases. Managing diet while simultaneously dealing with the obligations of a working adult can be difficult. Today, people have a very fast-paced life and sometimes neglect food choices. In order to simplify the interpretation of the Nutri-score labeling this paper proposes a method capable of automatically reading food labels with this format. This method is intended to support users when choosing the products to buy based on the letter identification of the label. For this purpose, a dataset was created, and a prototype mobile application was developed using a deep learning network to recognize the Nutri-score information. Although the final solution is still in progress, the reading module, which includes the proposed method, achieved an encouraging and promising accuracy (above 90%). The upcoming developments of the model include information to the user about the nutritional value of the analyzed product combining it’s Nutri-score label and composition. © ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2024.

2024

Detection of Landmarks in X-Ray Images Through Deep Learning

Autores
Fernandes, M; Filipe, V; Sousa, A; Gonçalves, L;

Publicação
Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST

Abstract
This paper presents a study on the automated detection of landmarks in medical x-ray images using deep learning techniques. In this work we developed two neural networks based on semantic segmentation to automatically detect landmarks in x-ray images, using a dataset of 200 encephalogram images: the UNet architecture and the FPN architecture. The UNet and FPN architectures are compared and it can be concluded that the FPN model, with IoU=0.91, is more robust and accurate in predicting landmarks. The study also had the goal of direct application in a medical context of diagnosing the models and their predictions. Our research team also developed a metric analysis, based on the encephalograms in the dataset, on the type of Mandibular Occlusion of the patients, thus allowing a fast and accurate response in the identification and classification of a diagnosis. The paper highlights the potential of deep learning for automating the detection of anatomical landmarks in medical imaging, which can save time, improve diagnostic accuracy, and facilitate treatment planning. We hope to develop a universal model in the future, capable of evaluating any type of metric using image segmentation. © ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2024.

2022

DEEP LEARNING APPROACH FOR TERRACE VINEYARDS DETECTION FROM GOOGLE EARTH SATELLITE IMAGERY

Autores
Figueiredo, N; Neto, A; Cunha, A; Sousa, JJ; Sousa, A;

Publicação
2022 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2022)

Abstract
On rugged slopes overlooking the Douro River we find the Alto Douro Wine Region in Portugal, populated by plantations in schist lands of difficult access and mostly manual work. The combined features of this region are a source of motivation to explore remote sensing techniques associated with artificial intelligence. In this paper, a preliminary approach for terrace vineyards detection is presented. This is a key-enabling task towards the achievement of important goals such as multi-temporal crop evaluation and cultures characterization. The proposed methodology consists in the application of a deep learning model (U-net) to detect the terrace vineyards using satellite images dataset acquired with Google Earth Pro. The proposed methodology showed very promising detection capabilities.

2022

Acacia dealbata classification from aerial imagery acquired using unmanned aerial vehicles

Autores
Pinto, J; Sousa, AMR; Sousa, JJ; Peres, E; Pádua, L;

Publicação
CENTERIS 2022 - International Conference on ENTERprise Information Systems / ProjMAN - International Conference on Project MANagement / HCist - International Conference on Health and Social Care Information Systems and Technologies 2022, Hybrid Event / Lisbon, Portugal, November 9-11, 2022.

Abstract

2022

Exploratory approach for automatic detection of vine rows in terrace vineyards

Autores
Figueiredo, N; Pádua, L; Cunha, A; Sousa, JJ; Sousa, AMR;

Publicação
CENTERIS 2022 - International Conference on ENTERprise Information Systems / ProjMAN - International Conference on Project MANagement / HCist - International Conference on Health and Social Care Information Systems and Technologies 2022, Hybrid Event / Lisbon, Portugal, November 9-11, 2022.

Abstract

Teses
supervisionadas

2022

Mobilidade na logística hospitalar recorrendo a blazor.net

Autor
Ana Isabel Teixeira Oliveira

Instituição
UTAD

2021

Automatic analysis of UAS-based multi-temporal data as support to a precision agroforestry management

Autor
Luís Filipe Machado Pádua

Instituição
UTAD

2021

Artificial intelligence techniques applied to agriculture

Autor
Nuno Leandro Soares de Figueiredo

Instituição
UTAD

2021

Fake news

Autor
Herbert Laroca Mendes Pinto

Instituição
UTAD

2021

Utilização de dispositivos móveis para o rastreio e identificação precoce do glaucoma empregando modelos de deep learning

Autor
Roberto Rezende

Instituição
UTAD