6 documents found, page 1 of 1
Sensing and Artificial Perception for Robots in Precision Forestry: A Survey
Ferreira, João Filipe; Portugal, David; Andrada, Maria Eduarda; Machado, Pedro; Rocha, Rui P.; Peixoto, PauloArtificial perception for robots operating in outdoor natural environments, including forest scenarios, has been the object of a substantial amount of research for decades. Regardless, this has proven to be one of the most difficult research areas in robotics and has yet to be robustly solved. This happens namely due to difficulties in dealing with environmental conditions (trees and relief, weather conditions,...
A LiDAR-Camera-Inertial-GNSS Apparatus for 3D Multimodal Dataset Collection in ...
Cristóvão, Mário P.; Portugal, David; Carvalho, Afonso E.; Ferreira, João FilipeForestry operations have become of great importance for a sustainable environment in the past few decades due to the increasing toll induced by rural abandonment and climate change. Robotics presents a promising solution to this problem; however, gathering the necessary data for developing and testing algorithms can be challenging. This work proposes a portable multi-sensor apparatus to collect relevant data ge...
Contribuição para o estudo da abóbada palatina nos portugueses
Ferreira, João Filipe.
Integration of touch attention mechanisms to improve the robotic haptic explora...
Martins, Ricardo Filipe Alves; Ferreira, João Filipe; Castelo-Branco, Miguel; Dias, JorgeThis text presents the integration of touch attention mechanisms to improve the efficiency of the action-perception loop, typically involved in active haptic exploration tasks of surfaces by robotic hands. The progressive inference of regions of the workspace that should be probed by the robotic system uses information related with haptic saliency extracted from the perceived haptic stimulus map (exploitation) ...
Bayesian Cognitive Models for 3D Structure and Motion Multimodal Perception
Ferreira, João FilipeTese de doutoramento em Engenharia Electrotécnica, na especialidade de Instrumentação e Controlo, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra; Humans use various sensory cues to extract crucial information from the environment. With a view of having robots as human companions, we are motivated towards helping to develop a knowledge representation system along the lines of what we...
TELE-3D um scanner para registo tridimensional de objectos
Ferreira, João FilipeDissertação de mestrado apresentada ao Departamento de Engenharia Electrotécnica e de Computadores da Fac. de Ciências e Tecnologia da Univ. de Coimbra