Search Results for author: Urbano J. Nunes

Found 8 papers, 4 papers with code

Exploiting Object-based and Segmentation-based Semantic Features for Deep Learning-based Indoor Scene Classification

no code implementations11 Apr 2024 Ricardo Pereira, Luís Garrote, Tiago Barros, Ana Lopes, Urbano J. Nunes

Hence, a novel approach that uses a semantic segmentation mask to provide Hu-moments-based segmentation categories' shape characterization, designated by Segmentation-based Hu-Moments Features (SHMFs), is proposed.

object-detection Object Detection +3

Multispectral Image Segmentation in Agriculture: A Comprehensive Study on Fusion Approaches

1 code implementation31 Jul 2023 Nuno Cunha, Tiago Barros, Mário Reis, Tiago Marta, Cristiano Premebida, Urbano J. Nunes

Multispectral imagery is frequently incorporated into agricultural tasks, providing valuable support for applications such as image segmentation, crop monitoring, field robotics, and yield estimation.

Edge Detection Image Segmentation +2

Approaching Test Time Augmentation in the Context of Uncertainty Calibration for Deep Neural Networks

1 code implementation11 Apr 2023 Pedro Conde, Tiago Barros, Rui L. Lopes, Cristiano Premebida, Urbano J. Nunes

With the rise of Deep Neural Networks, machine learning systems are nowadays ubiquitous in a number of real-world applications, which bears the need for highly reliable models.

Image Classification

A Deep Learning-based Global and Segmentation-based Semantic Feature Fusion Approach for Indoor Scene Classification

no code implementations13 Feb 2023 Ricardo Pereira, Tiago Barros, Luis Garrote, Ana Lopes, Urbano J. Nunes

This work proposes a novel approach that uses a semantic segmentation mask to obtain a 2D spatial layout of the segmentation-categories across the scene, designated by segmentation-based semantic features (SSFs).

Position Scene Classification +2

Place recognition survey: An update on deep learning approaches

no code implementations19 Jun 2021 Tiago Barros, Ricardo Pereira, Luís Garrote, Cristiano Premebida, Urbano J. Nunes

As part of the localization system, place recognition has benefited from recent developments in other perception tasks such as place categorization or object recognition, namely with the emergence of deep learning (DL) frameworks.

Autonomous Vehicles Object Recognition

AttDLNet: Attention-based DL Network for 3D LiDAR Place Recognition

1 code implementation17 Jun 2021 Tiago Barros, Luís Garrote, Ricardo Pereira, Cristiano Premebida, Urbano J. Nunes

LiDAR-based place recognition is one of the key components of SLAM and global localization in autonomous vehicles and robotics applications.

Loop Closure Detection

CNN-based Approaches For Cross-Subject Classification in Motor Imagery: From The State-of-The-Art to DynamicNet

1 code implementation17 May 2021 Alberto Zancanaro, Giulia Cisotto, João Ruivo Paulo, Gabriel Pires, Urbano J. Nunes

In this paper, we first present a review of the most recent studies using deep learning for MI classification, with particular attention to their cross-subject performance.

EEG Motor Imagery +1

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