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Details

003
Publications

2018

Hyperspectral Imaging for Real-Time Unmanned Aerial Vehicle Maritime Target Detection

Authors
Freitas, S; Silva, H; Almeida, J; Silva, E;

Publication
Journal of Intelligent and Robotic Systems: Theory and Applications

Abstract
This work address hyperspectral imaging systems use for maritime target detection using unmanned aerial vehicles. Specifically, by working in the creation of a hyperspectral real-time data processing system pipeline. We develop a boresight calibration method that allows to calibrate the position of the navigation sensor related to the camera imaging sensor, and improve substantially the accuracy of the target geo-reference. We also develop an unsupervised method for segmenting targets (boats) from their dominant background in real-time. We evaluated the performance of our proposed system for target detection in real-time with UAV flight data and present detection results comparing favorably our approach against other state-of- the-art method. © 2017 The Author(s)

2017

PLineD: Vision-based power lines detection for Unmanned Aerial Vehicles

Authors
Santos, T; Moreira, M; Almeida, J; Dias, A; Martins, A; Dinis, J; Formiga, J; Silva, E;

Publication
2017 IEEE International Conference on Autonomous Robot Systems and Competitions, ICARSC 2017

Abstract
It is commonly accepted that one of the most important factors for assuring the high performance of an electrical network is the surveillance and the respective preventive maintenance. From a long time ago that TSOs and DSOs incorporate in their maintenance plans the surveillance of the grid, where is included the aerial power lines inspection. Those inspections started by human patrol, including structure climbing when needed and later were substituted by helicopters with powerful sensors and specialised technicians. More recently the Unmanned Aerial Vehicles (UAV) technology has been used, taking advantage of its numerous advantages. This paper addresses the problem of improving the real-time perception capabilities of UAVs for endowing them with capabilities for safe and robust autonomous and semi-autonomous operations. It presents a new vision based power line detection algorithm denoted by PLineD, able to improve the detection robustness even in the presence of image with background noise. The algorithm is tested in real outdoor images of a dataset with multiple backgrounds and weather conditions. The experimental results demonstrate that the proposed approach is effective and able to implemented in real-time image processing pipeline. © 2017 IEEE.

2017

Simulation environment for underground flooded mines robotic exploration

Authors
Pereira, R; Rodrigues, J; Martins, A; Dias, A; Almeida, J; Almeida, C; Silva, E;

Publication
2017 IEEE International Conference on Autonomous Robot Systems and Competitions, ICARSC 2017

Abstract
This paper presents the work performed in the implementation of an underwater simulation environment for the development of an autonomous underwater vehicle for the exploration of flooded underground tunnels. In particular, the implementation of a laser based structured light system, multibeam sonar and other robot details were addressed. The simulation was used as a relevant tool in order to study and specify the robot multiple sensors characteristics and placement in order to adequately survey a realistic environment. A detailed description of the research and development work is presented along with the analysis of obtained results and the benefits this work brings to the project. © 2017 IEEE.

2017

STRONGMAR Summer School 2016 — Joining theory with a practical application in Underwater Archeology

Authors
Marques, MM; Salgado, A; Lobo, V; Carapau, RS; Rodrigues, AV; Carreras, M; Roca, J; Palomeras, N; Hurtos, N; Candela, C; Martins, A; Matos, A; Ferreira, B; Almeida, C; de Sa, FA; Almeida, JM; Silva, E;

Publication
OCEANS 2017 - Aberdeen

Abstract

2017

Underwater navigation sensors calibration in inland water spaces

Authors
Matias, B; Almeida, J; Ferreira, A; Martins, A; Ferreira, H; Silva, E;

Publication
OCEANS 2017 - Aberdeen

Abstract

Supervised
thesis

2017

Método visual de deteção de linhas elétricas para veículos aéreos não tripulados

Author
TIAGO ANDRÉ MIRANDA DOS SANTOS

Institution
IPP-ISEP

2017

Mapeamento 3D com sistemas LiDAR e GNSS

Author
MACIEJ CEREKWICKI

Institution
IPP-ISEP

2016

SISTEMA DE POSICIONAMENTO EXTERNO MULTI-CÂMARA

Author
ANDRÉ EMANUEL GODINHO NEVES

Institution
IPP-ISEP

2016

Sistema de Localização Subaquático para Veículos Autónomos

Author
BRUNO LOPES MATIAS

Institution
IPP-ISEP

2016

Hyperspectral Imaging for Real-Time Unmanned Aerial Vehicle Maritime Target Detection

Author
SARA COSTA FREITAS

Institution
IPP-ISEP