João Marcelo Teixeira

ORCID: 0000-0001-7180-512X
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About
Contact & Profiles
Research Areas
  • Augmented Reality Applications
  • Virtual Reality Applications and Impacts
  • Interactive and Immersive Displays
  • Tactile and Sensory Interactions
  • 3D Surveying and Cultural Heritage
  • Robotics and Sensor-Based Localization
  • Computer Graphics and Visualization Techniques
  • Hand Gesture Recognition Systems
  • Education and Digital Technologies
  • Human Pose and Action Recognition
  • Advanced Vision and Imaging
  • 3D Shape Modeling and Analysis
  • Robotic Mechanisms and Dynamics
  • Video Surveillance and Tracking Methods
  • Video Analysis and Summarization
  • Human Motion and Animation
  • Robotic Path Planning Algorithms
  • Educational Games and Gamification
  • Image Processing and 3D Reconstruction
  • Stroke Rehabilitation and Recovery
  • Spatial Cognition and Navigation
  • Museums and Cultural Heritage
  • Control and Dynamics of Mobile Robots
  • Fluid Dynamics Simulations and Interactions
  • Innovative Human-Technology Interaction

Universidade Federal de Pernambuco
2016-2025

Universidade Estadual do Oeste do Paraná
2024

Universidade do Porto
2012-2018

Universidade Federal Rural de Pernambuco
2013-2017

Univates
2017

Universidade Federal do Rio Grande do Sul
2017

Nanyang Technological University
2017

University of Arkansas at Little Rock
2017

TH Köln - University of Applied Sciences
2017

Lusíada University of Lisbon
2017

The successful recognition of sign language gestures by computer systems would greatly improve communications between the deaf and hearers. This work evaluates usage electromyogram (EMG) data provided Myo armband as features for classification 20 stationary letter from Brazilian Sign Language (LIBRAS) alphabet. was performed binary Support Vector Machines (SVMs), trained with a one-vs-all strategy. results obtained show that it is possible to identify gestures, but substantial limitations...

10.1109/svr.2016.21 article EN 2016-06-01

Validating robotics projects is a hard task. It demands more than intellectual effort, but also specific hardware usage, turning the designed project expensive and because of that, unviable to be executed. This process can improved by use 3D simulators, which have been developed directed scenarios such as architecture, games virtual reality experiences, applied robotics. There are available many simulator options in market, paid or free. Considering options, designer may questions on how...

10.1109/svr.2019.00049 article EN 2019-10-01

Motion analysis is an area with several applications for health, sports, and entertainment. The high cost of state-of-the-art equipment in the health field makes it unfeasible to apply this technique clinics’ routines. In vein, RGB-D RGB equipment, which have joint tracking tools, are tested portable low-cost solutions enable computational motion analysis. recent release Google MediaPipe, a inference that uses conventional cameras, can be considered milestone due its ability estimate depth...

10.3390/s23010003 article EN cc-by Sensors 2022-12-20

This paper proposes the use of a wearable device for visualization and control in association with an UAV applied to structural inspection buildings. More specifically, AR. Drone is controlled through head positions gestures performed by operator wearing Google Glass, images captured drone are visualized on Glass's screen. We discuss problems that arise when such solution developed, along limitations come from today's available technology how overcome them.

10.1109/svr.2014.42 article EN 2014-05-01

This paper explores the application of Self-Concepts, a Semantic-Differential Scale-based methodology, to evaluate Serious Game designed for cognitive impairment assessment using MoCA test and augmented reality (AR) mobility analysis. A case study involved seven elderly participants. Despite some challenges in navigating AR environment tests, self-concept evaluations consistently demonstrated high user expectations positive experiences with digital artifact. validates process highlights...

10.5753/jis.2025.4785 article EN cc-by Journal on Interactive Systems 2025-01-01

O presente artigo aborda a evolução da representação do corpo masculino na moda contemporânea, destacando transição de uma imagem delgada e associada à homossexualidade AIDS para um ideal musculoso viril. A pesquisa foca influência mercado poder compra dos grupos homossexuais nessa transformação. Discute-se como masculinidade é construção social mídia disseminam o objeto desejo consumo. análise abrange desde ascensão direitos das mulheres até papel fotografia redes sociais perpetuação desse...

10.12957/logos.2024.86205 article PT Logos 2025-01-14

10.5220/0013350500003912 article EN Proceedings of the 17th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications 2025-01-01

10.1109/vrw66409.2025.00075 article EN 2022 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW) 2025-03-08

10.1109/vrw66409.2025.00023 article EN 2022 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW) 2025-03-08

Google glass is a hands-free, head-mounted intelligent device that can be worn as wearable computing eyewear. This work discusses its potential in education by proposing an application, the Glassist, aiming at helping teachers management tasks. The application allows to create individual portfolios for students, manage their information and share it with peers. tool uses Augmented Reality recognize students face display relevant about them. We also discuss some preliminary results regarding...

10.1109/svr.2014.41 article EN 2014-05-01

The use of low-cost RGB-D sensors became popular with the release Microsoft Kinect V1, in 2010. From that time on, different companies such as ASUS, Orbbec, and Intel have developed their solutions for capturing 3D data. This work proposes an analysis how well 10 perform while applied to a reconstruction task. comparison was possible by using COMAU's e.Do robotic Arm ensuring all performed same set 3 paths RGB Depth data from test environment. A customized version RTAB-map, open-source...

10.1109/svr51698.2020.00046 article EN 2020-11-01

We introduce a parallel algorithm to solve approximate and exact nearest neighbor queries on the GPU, exploiting its massively processing power. Both data structure construction are performed avoiding memory copies from system device memory. This achieves real-time performance, enabling usage in dynamic scenarios, by minimizing sorting comparisons needed for large K value. The underlying spatial subdivision handles 3D points is based grid hashing. Users can specify size interactively....

10.1109/sbac-pad.2009.18 article EN 2009-10-01

Background The auditory processing impairments frequently observed in aphasia are being slowly clarified by using eventrelated potentials (ERPs), a method that allows brain processes to be at high temporal resolution. Mismatch negativity (MMN) and the N2b amplitude reflect aspects of echoic memory, attention, phonological representation. This study evaluates speech pure tones an anomic subject 6 years after stroke, investigates whether ERPs can detect possible neurophysiologic sequelae...

10.17430/893687 article EN Journal of Hearing Science 2015-06-30

Exploring the potential of NFTs and metaverses can make them tools for cultural preservation social sustainability in Brazil. This article provides an overview recent evolution metaverse adoption these technologies by Brazilian communities. The main focus this study is on involvement inclusion Indigenous peoples technological sphere, emphasizing importance ensuring respect forest when including NFT projects. Several existing solutions that facilitate initiatives are exemplified, one such...

10.1145/3625008.3625028 article EN 2023-11-06

The development of applications for high-performance Field Programmable Gate Array (FPGA) based embedded systems is a long and error-prone process. Typically, developers need to be deeply involved in all the stages translation optimization an application described high-level programming language lower-level design description ensure solution meets required functionality performance. This paper describes use novel aspect-oriented hardware/software approach FPGA-based platforms. design-flow...

10.1109/fccm.2012.41 article EN 2012-04-01

This paper explores and evaluates the main limitations associated with AI-based 360 panorama generation. We make use of a free generator, Skybox AI, to highlight some current present in automatic generation from text input. By recognizing addressing these constraints, researchers practitioners can pave way for enhanced al-gorithms systems capable delivering more immersive realistic panoramic experiences.

10.1109/vrw62533.2024.00079 article EN 2022 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW) 2024-03-16
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