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de interesse
Detalhes

Detalhes

043
Publicações

2022

3DupIC: An Underwater Scan Matching Method for Three-Dimensional Sonar Registration

Autores
Ferreira, A; Almeida, J; Martins, A; Matos, A; Silva, E;

Publicação
SENSORS

Abstract
This work presents a six degrees of freedom probabilistic scan matching method for registration of 3D underwater sonar scans. Unlike previous works, where local submaps are built to overcome measurement sparsity, our solution develops scan matching directly from the raw sonar data. Our method, based on the probabilistic Iterative Correspondence (pIC), takes measurement uncertainty into consideration while developing the registration procedure. A new probabilistic sensor model was developed to compute the uncertainty of each scan measurement individually. Initial displacement guesses are obtained from a probabilistic dead reckoning approach, also detailed in this document. Experiments, based on real data, demonstrate superior robustness and accuracy of our method with respect to the popular ICP algorithm. An improved trajectory is obtained by integration of scan matching updates in the localization data fusion algorithm, resulting in a substantial reduction of the original dead reckoning drift.

2022

Microplastics Contamination of Large Pelagic Fish in the Open Atlantic Ocean

Autores
Pereira, R; Rodrigues, SM; Silva, D; Freitas, V; Almeida, CMR; Camilo, A; Barbosa, S; Silva, E; Ramos, S;

Publicação
SIBIC 2022

Abstract

2022

An holistic monitoring system for measurement of the atmospheric electric field over the ocean - The SAIL campaign

Autores
Barbosa, S; Dias, N; Almeida, C; Amaral, G; Ferreira, A; Lima, L; Silva, I; Martins, A; Almeida, J; Camilo, M; Silva, E;

Publicação
OCEANS 2022

Abstract
The atmospheric electric field is a key characteristic of the Earth system. Despite its relevance, oceanic measurements of the atmospheric electric field are scarce, as typically oceanic measurements tend to be focused on ocean properties rather than on the atmosphere above. This motivated the set-up of an innovative campaign on board the sail ship NRP Sagres focused on the measurement of the atmospheric electric field in the marine boundary layer. This paper describes the monitoring system that was developed to measure the atmospheric electric field during the planned circumnavigation expedition of the sail ship NRP Sagres. © 2022 IEEE.

2022

ProtoAtlantic: Innovation in the Marine Environment in the Atlantic Area Region

Autores
Lima, AP; Hernandez, HM; Giannoumis, J; O'Suilleabhain, D; OReilly, A; Heward, M; Presse, P; Santana, M; Falcon, JG; Silva, E;

Publicação
OCEANS 2022

Abstract
Blue Growth, a term first coined by the European Commission as "an initiative to harness the untapped potential of Europe's oceans, seas and coasts", identified rich marine resources as an unique asset for economic development in coastal regions and on islands. The European Commission has through the Blue Growth objectives for the first time highlighted marine sectors as unique market opportunities with high growth potential which carry socio-economic importance to the development of coastal regions. Particularly marine sectors such as aquaculture, marine robotics, and marine renewable energy which fulfil global needs in food safety and security, enable monitoring and exploration in harsh and remote conditions, and globally growing energy needs were recognized as catalysts to achieve sustainable development. Marine start-ups and small and medium-sized enterprises (SME) were identified as potential drivers in emerging marine sectors. However, they require support mechanisms tailored to their needs as they are competing for the same business and financial support as land-based SMEs, yet the research and development infrastructure is more difficult to access.ProtoAtlantic, an Interreg Atlantic Area funded project, provided marine-specific support mechanisms to marine start-ups and SMEs in emerging sectors, including business support through the accelerator and mentorship programs, enabling companies to fast track their product development through access to prototyping and testing facilities in all partner regions. The Interreg Atlantic Area encompasses partner regions in France, Ireland, Portugal, Scotland, and Spain. The consortium partners consist of Technopôle Brest Iroise (Brest, France), University College Cork - UCC (Cork, Ireland), County Council Cork (Cork, Ireland), INESC TEC (Porto, Portugal), the European Marine Energy Centre - EMEC (Orkney, Scotland), EMERGE (Canary Islands, Spain), and the lead partner, Innovalia Association (Canary Islands, Spain). The strategic collaboration between the partners provided marine start-ups access to testing facilities in the Atlantic Ocean. The extreme living laboratories provided by EMEC, the LiR National Ocean Testing Facilities at UCC's Centre of Marine and Renewable Energy (MaREI centre), and INESC TEC promise harsh real-life conditions which test the suitability of marine technologies to the limit thereby providing start-ups and SMEs with an extra layer of confidence in developing their technologies. This cross-regional collaboration puts the ProtoAltantic program in a unique position, as it is the first of its kind to dedicate marine-specific support to marine start-ups and SMEs which have benefited from the opportunities that ProtoAtlantic has provided.ProtoAtlantic developed a holistic model for the prototyping and exploitation of innovative ideas in emerging maritime sectors. After the identification of ideas from the research community, start-ups, and SMEs with product innovation capacity in the maritime sector, an acceleration program with a normed and structured process was implemented, thus creating a unique ecosystem in the Atlantic that is addressing a co-creation paradigm with the local European start-ups communities and all the stakeholders. © 2022 IEEE.

2022

Hyperspectral Imaging Zero-Shot Learning for Remote Marine Litter Detection and Classification

Autores
Freitas, S; Silva, H; Silva, E;

Publicação
REMOTE SENSING

Abstract
This paper addresses the development of a novel zero-shot learning method for remote marine litter hyperspectral imaging data classification. The work consisted of using an airborne acquired marine litter hyperspectral imaging dataset that contains data about different plastic targets and other materials and assessing the viability of detecting and classifying plastic materials without knowing their exact spectral response in an unsupervised manner. The classification of the marine litter samples was divided into known and unknown classes, i.e., classes that were hidden from the dataset during the training phase. The obtained results show a marine litter automated detection for all the classes, including (in the worst case of an unknown class) a precision rate over 56% and an overall accuracy of 98.71%.

Teses
supervisionadas

2021

Estudo e desenvolvimento de protótipos para estimação da velocidade de veículos autónomos submarinos

Autor
MURILLO PRESTES VILLA

Instituição
IPP-ISEP

2021

DESENVOLVIMENTO DE UM MODELO DE SERVIÇOS DE PRODUÇÃO URBANA ASSENTE NA IMPRESSÃO ADITIVA EM PROJETO ABERTO (OPEN DESIGN)

Autor
PAULO DUARTE VALENTE DE OLIVEIRA GOULÃO

Instituição
IPP-ISEP

2020

Object Detection and Tracking for ASV

Autor
DIMPI RAJUBHAI PATEL

Instituição
IPP-ISEP

2019

Tratamento de Imagem e detecção de objectos

Autor
JOÃO DAVID GUIMARÃES FIGUEIREDO DIAS

Instituição
IPP-ISEP

2018

Sistema de Parametrização Automática e Mapeamento em Tempo Real com Recurso a Sonares Multi-feixe

Autor
RICARDO DANIEL CARNEIRO PEREIRA

Instituição
IPP-ISEP