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Cristiano Premebida

6 accepted papers

2024

PointNetPGAP-SLC: A 3D LiDAR-Based Place Recognition Approach With Segment-Level Consistency Training for Mobile Robots in Horticulture

RA-L 2024

3D LiDAR-based place recognition remains largely underexplored in horticultural environments, which present unique challenges due to their semi-permeable nature to laser beams. This characteristic often results in highly similar LiDAR scans from adjacent rows, leading to descriptor ambiguity and, co

Cited by 8SourceScholar
2021

Semantic Feature Mining for 3D Object Classification and Segmentation

ICRA 2021poster

Deep learning on 3D point clouds has drawn much attention, due to its large variety of applications in intelligent perception for automated and robotic systems. Unlike structured 2D images, it is challenging to extract features and implement convolutional networks over these unordered points. Althou…

Cited by 2SourceScholar
2020

Look and Listen: A Multi-modality Late Fusion Approach to Scene Classification for Autonomous Machines

IROS 2020poster

The novelty of this study consists in a multi-modality approach to scene classification, where image and audio complement each other in a process of deep late fusion. The approach is demonstrated on a difficult classification problem, consisting of two synchronised and balanced datasets of 16,000 da…

Cited by 13SourceScholar
2019

Mobile Robot Localization with Reinforcement Learning Map Update Decision aided by an Absolute Indoor Positioning System

IROS 2019poster

This paper introduces a new mobile robot localization solution consisting of two main modules: a Particle-Filter based Localization (PFL) and a Reinforcement-Learning based map updating, integrating relative measurements and absolute indoor positioning sensor (A-IPS) data. Concerning localization us…

Cited by 17SourceScholar
2018

HMAPs - Hybrid Height- Voxel Maps for Environment Representation

IROS 2018poster

This paper presents a hybrid 3D-like grid-based mapping approach, that we called HMAP, used as a reliable and efficient 3D representation of the environment surrounding a mobile robot. Considering 3D point-clouds as input data, the proposed mapping approach addresses the representation of height-vox…

Cited by 5SourceScholar
2015

Applying probabilistic Mixture Models to semantic place classification in mobile robotics

IROS 2015poster

In this paper a study is made of the problem of classifying scenarios, in terms of semantic categories, based on data gathered from sensors mounted on-board mobile robots operating indoors. Once the data are transformed to feature space, supervised classification is performed by a probabilistic appr…

Cited by 25SourceScholar