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Invariance for Impulsive Control Systems
(2003-12-01)
In this article, we provide invariance conditions for control systems whose dynamics are given by measure driven differential inclusions. The solution concept plays a critical role in the extension of the conventional ...
Pattern recognition structured heuristics methods for image processing in mobile robot navigation
(2010-12-01)
In this project, the main focus is to apply image processing techniques in computer vision through an omnidirectional vision system to agricultural mobile robots (AMR) used for trajectory navigation problems, as well as ...
JSEG-based image segmentation in computer vision for agricultural mobile robot navigation
(2009-12-01)
This project aims to apply image processing techniques in computer vision featuring an omnidirectional vision system to agricultural mobile robots (AMR) used for trajectory navigation problems, as well as localization ...
ANN statistical image recognition method for computer vision in agricultural mobile robot navigation
(2010-11-29)
The main application area in this project, is to deploy image processing and segmentation techniques in computer vision through an omnidirectional vision system to agricultural mobile robots (AMR) used for trajectory ...
Simulation of an autonomous vehicle with a vision-based navigation system in unstructured terrains using OctoMap
(Universidade Federal FluminenseNiterói, 2013-11-04)
Design and implementation of autonomous vehicles
is a very complex task. One important step on building autonomous
navigation systems is to apply it first on simulations.
We present here a vision-based autonomous ...
Using cubic splines to mitigate systematic errors in GPS relative positioning
(2004-12-01)
Systematic errors can have a significant effect on GPS observable. In medium and long baselines the major systematic error source are the ionosphere and troposphere refraction and the GPS satellites orbit errors. But, in ...
Generating VRS data using atmospheric models: How far can we go?
(2007-12-01)
Nowadays, with the expansion of the reference stations networks, several positioning techniques have been developed and/or improved. Among them, the VRS (Virtual Reference Station) concept has been very used. In this paper ...
A feasibility study on incremental bundle adjustment with fisheye images and low-cost sensors
(2019-01-01)
Low cost imaging and positioning sensors are opening new frontiers for applications in near real-time Photogrammetry. Omnidirectional cameras acquiring images with 360° coverage, when combined with information coming from ...
Towards forecasting and mitigating ionospheric scintillation effects on GNSS
(2007-12-01)
The effect of the ionosphere on the signals of Global Navigation Satellite Systems (GNSS), such as the Global Positionig System (GPS) and the proposed European Galileo, is dependent on the ionospheric electron density, ...
Modernizing the Brazilian active control network
(2006-12-01)
The Brazilian Network for Continuous Monitoring of GPS - RBMC, since its foundation in December of 1996, has been playing an essential role for the maintenance and user access of the fundamental geodetic frame in the ...