Nuno Rodrigues

• Professor
• Coordinator Professor at Polytechnic of Leiria

Wildfires have become increasingly critical, affecting forests, air and water quality, soil health, and contributing to climate change. Unmanned aerial vehicle (UAV) have emerged as an effective solution for monitoring and managing wildfires, due to their rapid deployment, low cost, and reduced environmental impact. This study presents a digital tw...

Over recent decades, internet-based communication has grown exponentially, accompanied by a surge in cyber threats from malicious actors targeting users and organizations, heightening the demand for robust security and privacy measures. With the emergence of physical–digital environments based on Mixed Reality (MR) and the Metaverse, new cybersecur...

In the rapidly evolving field of machine learning engineering, access to large, high-quality, and well-balanced labeled datasets is indispensable for accurate product classification. This necessity holds particular significance in sectors such as the ceramics industry, in which effective production line activities are paramount and deep learning cl...

The industrial sector has suffered changes over time until it came to the fourth phase, called Industry 4.0. Despite developments in this area, some companies are failing to keep up, which makes them less competitive with the rest. Thus, the presented work proposes a system that can support a Digital Twin of Stone Factory, a sector that has not bee...

Emotion recognition has become increasingly important in the field of Deep Learning (DL) and computer vision due to its broad applicability by using human–computer interaction (HCI) in areas such as psychology, healthcare, and entertainment. In this paper, we conduct a systematic review of facial and pose emotion recognition using DL and computer v...

The sky may seem big enough for two flying vehicles to collide, but the facts show that mid-air collisions still occur occasionally and are a significant concern. Pilots learn manual tactics to avoid collisions, such as see-and-avoid, but these rules have limitations. Automated solutions have reduced collisions, but these technologies are not manda...

Defect detection is a key element of quality control in today’s industries, and the process requires the incorporation of automated methods, including image sensors, to detect any potential defects that may occur during the manufacturing process. While there are various methods that can be used for inspecting surfaces, such as those of metal and bu...

In 2020, the number of people aged 60 years and older outnumbered children younger than 5 years and this trend is growing at a rapid pace. Therefore, elders are at higher risk of social isolation and loneliness due to the busy lifestyle of families in the current society. According to recent studies, conversational agents have a significant impact...

This paper presents a systematic review of articles on computer-vision-based flying obstacle detection with a focus on midair collision avoidance. Publications from the beginning until 2022 were searched in Scopus, IEEE, ACM, MDPI, and Web of Science databases. From the initial 647 publications obtained, 85 were finally selected and examined. The r...

Surface defect detection with machine learning has become an important tool in industries and a large field of study for researchers or workers in recent years. It is necessary to have a simplified source of information that helps us to better focus on one type of surface. In this systematic review, we present a classification for surface defect de...

This annual issue embraces articles from three sets of sources: the first covers the topic Virtual Environments and Interaction Design Research at the University of Saint Joseph, Macao SAR, China works selected and guest edited by Carlos Sena Caires and Gerald Estadieu; the second set are three extended articles from the International Conference on...

During the last two decades, many products, research projects and prototypes were announced with different characteristics and capabilities, all adopting the “smart” qualifier word. If a smartness property could not be defined simply as true or false, defining a suitable range was not an easy task. This issue led to the proposal of some classificat...

Predictions estimate that the future will entail several devices related to IoT (Internet of Things). Most of these will be present in our homes, collecting useful information and triggering informed actions. Much work has been done on collecting data and triggering such devices. However, there is not much work on how to make use of such informatio...

The growing acceptance of new technologies, along with trends focused on reducing the use of paper and facilitating access to information, make mobile applications increasingly important. In order to solve current demands, we want to create an attractive way to share information and offer a tool to educate people at the same time. The main objectiv...

This article aims to introduce a number of technological topics, applied to the valuing of several cultural heritage structures in Portugal, that may be used in the context of issues such as conserving, presenting and communicating cultural heritage to the general public. These attend important aspects such as the modeling technique (manual or proc...

The arrival of Unmanned Aerial Vehicles (UAV) to the consumer market has been changing the way we interact with our surroundings. Fields like cinema and photography are improving with the possibility of reaching unsafe areas, as much as industry related companies that can now supervise their infrastructures safely. Besides many other professional a...

O trabalho apresentado neste artigo visa a reconstrução virtual de duas habitações do Sítio Arqueológico de Miróbriga (denominadas por Edifício nº 1 e Edifício nº 2, estando ambas localizadas no sector residencial desta cidade romana). Encontrando-se estas habitações em ruínas, não é possível obter uma perceção de como teria sido a sua estrutura ar...

Every single instant a person generates a large amount of information that somehow is lost. This information can assume a large diversity of means, such as an oral word, a sneeze, an increase in heartbeat or even facial expressions. We present a model which promotes the well-being of the elderly in their homes. The general idea behind the model is...

The quality of life in older people deteriorates faster, depending if these have a sedentary lifestyle. Technology is used as a tool in various fields and there are some applications that have been developed to encourage sports through entertainment, this is the case of the Nintendo Wii. The positive impact of this kind of application has been the...

The world population is aging, all countries are experiencing an increase of elder population. The pace of aging population in many developing countries is substantially faster than in the past. Consequently, these countries must adapt much more rapidly to this aging. Therapy and Physical activity helps to improve health and well-being in the elder...

Recent work on the virtual reconstruction of a Roman town is presented, in the context of issues like conserving, presenting and communicating that cultural heritage to the general public. Reconstructions are developed using manual and procedural techniques, with the support of efficient and low-cost tools, using the internet for collaborative and...

Traditionally procedural modelling techniques are commonly used to generate new structures and are presently established in several areas such as video games and computer animated movies. However they may also be used in heritage applications to efficiently produce models of non-existing worlds for which there is some kind of knowledge (e.g. floor...

Being the ancient cultural heritage structures and artefacts so full of detail and relevance to studies related to our past, it would be desirable to have precise virtual replicas that could be freely explored without endangering important pieces of history. However, the costs to produce three-dimensional environments are sometimes discouraging, du...

This paper describes the inGuide - Interactive Guide application, a context-aware tourist guide that is presently available to Android smartphones. This application takes advantage of technologies such as Augmented Reality and geolocation in order to provide contextual information in a simple and interactive way. inGuide is a modular application wh...

With the increasing demand for more complex and larger models in different fields, such as the design of virtual worlds, video games, and computer animated movies, the need to generate them automatically has become more necessary than ever. Manual tools are no longer sufficient to match this rising need, and the impact that automatic tools may have...

The active creation of buildings as recently been the focus of the creation of virtual urban environments due to the countless advantages it presents in areas such as architecture, cinema and video games, and even in several commercial applications. The present paper demonstrates a quick method for the creation of 3D building models from floor plan...

The manual creation of virtual environments is a demanding and costly task. With the increasing demand for more complex models in different areas, such as the design of virtual worlds, video games and computer animated movies the need to generate them automatically has become more necessary than ever.This paper presents a framework for the automati...

The manual creation of virtual environments is a demanding and costly task. With the increasing demand for more complex models in different areas, such as the design of virtual worlds, video games and computer animated movies the need to generate them automatically has become more necessary than ever. This paper presents a framework for the automat...

The increasing demand for larger and more complex virtual models arising from different areas (e.g. design of virtual cities, video games and computer animated movies) creates the need for efficient computer algorithms able to generate them automatically. This paper presents a method for automatic generation of traversable houses, using architectur...

The virtual reconstruction of heritage sites has been the focus of many projects. These typically involve significant use of manual reconstruction techniques, and thus a great deal of human effort to create the virtual structures. Also, often, there is not sufficient physical evidence to recreate these structures precisely as they may have been in...

Resumo Os dados do tipo LIDAR (Light Detection and Ranging) têm suscitado, nos últimos anos, um interesse crescente enquanto fonte de dados para criação de modelos digitais de superfície (MDS), nomeadamente na localização, caracterização e monitorização de malhas urbanas. Neste artigo descreve-se uma metodologia para identificação e visualização de...