Luís Almeida

ORCID: 0000-0003-4711-4454
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About
Contact & Profiles
Research Areas
  • Advanced Vision and Imaging
  • Robotics and Sensor-Based Localization
  • Virtual Reality Applications and Impacts
  • Teleoperation and Haptic Systems
  • Tactile and Sensory Interactions
  • 3D Shape Modeling and Analysis
  • 3D Surveying and Cultural Heritage
  • Context-Aware Activity Recognition Systems
  • Human Pose and Action Recognition
  • Optical measurement and interference techniques
  • Technology Use by Older Adults
  • Hand Gesture Recognition Systems
  • Human Motion and Animation
  • Education and Public Policy
  • Mobile Health and mHealth Applications
  • Gaze Tracking and Assistive Technology
  • IoT and Edge/Fog Computing
  • Robot Manipulation and Learning
  • Irrigation Practices and Water Management
  • Youth, Drugs, and Violence
  • Education Pedagogy and Practices
  • Evacuation and Crowd Dynamics
  • Cell Image Analysis Techniques
  • Public Health in Brazil
  • Robotics and Automated Systems

Institute for Systems Engineering and Computers
2011-2024

University of Coimbra
2004-2024

Instituto Politécnico de Tomar
2011-2022

Universitat Jaume I
2015

Khalifa University of Science and Technology
2015

Universidade do Porto
2015

INESC TEC
2013

Human-machine interfaces play a crucial role in intervention robotic systems operated hazardous environments, such as deep sea conditions. This article introduces user interface abstraction layer to enhance reconfigurability. It also describes VR-based that utilizes immersive technologies reduce faults and mental fatigue. The goal is show the only most relevant information about current mission.

10.1109/mcg.2015.118 article EN IEEE Computer Graphics and Applications 2015-11-11

Growing tomato plants with fertigation in sand substrates allows growers to maintain optimal levels of water and nutrients for crop production. This practice also reduces risk from phytopathogens the development saline conditions. Potassium (K) is most required nutrient by crop. research evaluated nutritional influence potassium on during beginning reproductive stage. After opening first flowers, are limited availability. Five doses K (60, 120, 180, 240, 300 mg dm-3 K) were applied via...

10.55905/oelv23n1-023 article EN cc-by-nc OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA 2025-01-07

Transferring skills and expertise to remote places, without being present, is a new challenge for our digitally interconnected society. People can experience perform actions in distant places through robotic agent wearing immersive interfaces feel physically there. However, technological contingencies affect human perception, compromising skill-based performances. Considering the results from studies on factors, set of recommendations construction teleoperation systems provided, followed by...

10.3390/app10186232 article EN cc-by Applied Sciences 2020-09-08

This paper investigates approaches capable of inducing sensations tele-presence in robotic tele-operations. Operator's control actions are simpler, if he feels being the remote environment. The goal is to replicate some conditions environment let operator's perception behaviours approximate natural ones. Since immersion aims at providing stimulus trick sensory system, we pursue a consistency between outside feedbacks and inside proprioceptive, vestibular information cognitive models. Seeking...

10.1109/expat.2017.7984414 article EN 2017-06-01

Over the past few years, virtual and mixed reality systems have evolved significantly yielding high immersive experiences. Most of metaphors used for interaction with environment do not provide same meaningful feedback, to which users are in real world. This paper proposes a cyber-glove improve sensation degree embodiment tasks. In particular, we proposing system that tracks wrist movements, hand orientation finger movements. It provides decoupled position hand, can contribute better...

10.1109/smc.2019.8914239 article EN 2022 IEEE International Conference on Systems, Man, and Cybernetics (SMC) 2019-10-01

This paper proposes a new interaction mechanism for tele-operating mobile robot. The approach explores the notion of telepresence and physical embodiment to create what may be called tele-embodiment. Its principle is that operator will see himself at remote site this enable him/her better operate Four styles were experimentally compared, from traditional joystick approaches more innovative based on natural body posture intentions. environment perception provided by visual feedback, according...

10.1109/roman.2014.6926298 article EN 2014-08-01

Remote monitoring of health parameters is a promising approach to improve the condition and quality life particular groups population, which can also alleviate current expenditure demands healthcare systems. The elderly, usually affected by chronic comorbidities, are specific group population that strongly benefit from telehealth technologies, allowing them reach more independent life, living longer in their own homes. Usability technologies acceptance end-users essential requirements for...

10.1109/healthcom.2018.8531126 article EN 2018-09-01

This paper focus in the importance of context awareness and intention understanding capabilities modern robots when faced with different situations. The inclusion such requirements robot design aim for more intelligent capable to adapt its behaviours Gaze estimation gesture interpretation are modalities, closely related context-depent human understanding, that addressed this work.

10.1109/roman.2012.6343803 article EN 2012-09-01

This research proposes an on-line incremental 3D reconstruction framework that can be used on telepresence robots or human robot interaction (HRI). The aim is a low cost solution enables users to communicate and interact remotely experiencing the benefits of face-to-face meeting. By exploring computers graphics techniques spatial audio we intend induce sensations being physical in presence other people. There wide variety opportunities including high performance imaging, multi-view video,...

10.2316/p.2011.752-068 article EN Biomechanics / 752: Robotics 2011-01-01

This article presents a technique for registration and segmentation of dense depth maps provided by stereo vision system. The system uses inertial sensors to give reference camera pose. are registered using modified version the ICP - iterative closet point algorithm register obtained from proposed explores integration sensor data map registration. Depth systems, very view dependent, providing discrete layers detected aligned with camera. In this work we use recover pose, rectify ground...

10.1109/robot.2003.1241586 article EN 2004-03-01

Este estudo avaliou o impacto do uso salbutamol, um broncodilatador, na melhora desempenho esportivo e sua relação com doping. A utilização de substâncias para melhorar é uma prática antiga que evoluiu até as regulamentações atuais, principalmente pela WADA, limitam drogas no esporte competitivo proteger a integridade saúde dos atletas. Embora terapêutico salbutamol por inalação seja permitido em doses controladas, seu pode proporcionar vantagens ergogênicas, melhorando capacidade aeróbica...

10.34119/bjhrv7n9-388 article PT Brazilian Journal of Health Review 2024-12-16

O Balanço Hídrico Climatológico (BHC) é uma das formas de monitorar o armazenamento água no solo, sendo ferramenta essencial planejamento agrícola e estratégias manejo culturas. Apesar ser para planejamento, BHC ainda não conhecido regiões com atividade agrícola. Portanto, objetivou-se este estudo estimar analisar Thornthwaite Mather classificar clima município Palmas, Paraná. De acordo os resultados, verificou-se que balanço hídrico apresentou evapotranspiração real (ETR) potencial 774,98...

10.55905/oelv22n12-244 article PT cc-by-nc OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA 2024-12-29

Objetivo: O A. baumannii é um patógeno oportunista persistente em ambientes hospitalares e resistente a múltiplos antibióticos, representando desafio significativo unidades de cuidados intensivos. estudo visou avaliar o índice positividade para várias amostras biológicas pacientes internados, correlacionando os dados com presença genes resistência distribuição por unidade internação. Método: Trata-se retrospectivo quantitativo culturas positivas coletadas análises crescimento entre anos 2021...

10.5327/1516-3180.142s1.12516 article PT cc-by Sao Paulo Medical Journal 2024-01-01

Vergence ability is an important visual behavior observed on living creatures when they use vision to interact with the environment. The notion of active observer equally useful for robotic systems tasks like object tracking, fixation and 3D environment structure recovery. Humanoid robotics are a potential playground such behaviors. This paper describes implementation real time binocular vergence using cepstral filtering estimate stereo disparities. By implementing filter graphics processing...

10.5220/0003319406650670 article EN cc-by-nc-nd 2011-01-01

This paper presents a framework for on-line incremental 3D modeling useful human computer interaction or telepresence applications. We aim free viewpoint approach based on user's realistic representation to simulate real face-to-face meeting. Our contribution includes new adaptation of the Crust algorithm reconstruction purposes and, confidence method that evaluates fusion data into reconstructed model, measure uncertainty and novelty. With depth image information single RGB-D sensor, we...

10.2312/egp.20161047 article EN Eurographics 2016-05-09
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