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Sobre

Sobre

Luis Rocha doutorado em Engenharia Electrotécnica e de Computadores pela Faculdade de Engenharia da Universidade do Porto em 2014. É investigador do INESC TEC desde 2010 e é actualmente responsável pela área de investigação de manipuladores industriais no Centro de Robótica Industrial e Sistemas Inteligentes (CRIIS ). Publicou mais de 40 artigos em revistas científicas internacionais e em conferências. Os seus principais interesses de investigação focam-se no desenvolvimento de sistemas robóticos industriais mais ágeis e centrados no ser humano, nomeadamente via a investigação de novos mecanismos interação homem-robô, novas metodologias de programação de robôs mais simplificadas e sistemas avançados de perceção. Foi coordenador da equipa do INESC que participou nos seguintes projetos: H2020 MARI4_YARD, Xweld (H2020 Trinitiy Cascade Funding), AI4R.WELD (H2020 ZDMP Cascade Funding), Interreg POCTEC 2014-2020 Manufactur4.0, P2020 PRODUTECH4S&C e PRODUTECH -SIF.

Tópicos
de interesse
Detalhes

Detalhes

  • Nome

    Luís Freitas Rocha
  • Cargo

    Coordenador de Centro
  • Desde

    01 setembro 2010
058
Publicações

2026

Active learning for industrial defect detection: a study on hybrid sampling strategies

Autores
Gonzalez, DG; Nascimento, R; Rocha, CD; Silva, MF; Filipe, V; Rocha, LF; Magalhaes, LG; Cunha, A;

Publicação
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY

Abstract
In modern industrial environments, ensuring the quality of manufactured components is critical, particularly when dealing with reflective surfaces that hinder conventional inspection techniques. Although deep learning-based methods offer robust solutions for visual defect detection, their performance often hinges on the availability of substantial annotated datasets. In industrial scenarios, labeling such datasets is costly and time-consuming. This study investigates applying sample selection techniques to reduce annotation efforts for porosity detection on machined aluminium parts. Several selection strategies were evaluated using a real-world dataset composed of high-resolution images, including uncertainty, diversity, random-based criteria, and hybrid combinations. The best-performing strategy, which combined entropy-based uncertainty, spatial diversity, and random-based, achieved an F1-score of 86.70% and a recall of 82.99% after ten iterations using only 2,400 annotated images, corresponding to 66.67% of the active learning pool. Although the fully supervised model achieved an F1-score of 88.84% and a recall of 86.30%, the proposed approach proved a competitive alternative. These results demonstrate that selective data annotation can significantly reduce labeling effort while maintaining reliable performance in defect detection, even under the challenging conditions posed by reflective industrial parts.

2026

A review of visual perception for robotic bin-picking

Autores
Cordeiro, A; Rocha, LF; Boaventura-Cunha, J; Figueiredo, D; Souza, JP;

Publicação
ROBOTICS AND AUTONOMOUS SYSTEMS

Abstract
Robotic bin-picking is a critical operation in modern industry, which is characterised by the detection, selection, and placement of items from a disordered and cluttered environment, which can be boundary limited or not, e.g. bins, boxes or containers. In this context, perception systems are employed to localise, detect and estimate grasping points. Despite the considerable progress made, from analytical approaches to recent deep learning methods, challenges still remain. This is evidenced by the growing innovation proposing distinct solutions. This paper aims to review perception methodologies developed since 2009, providing detailed descriptions and discussions of their implementation. Additionally, it presents an extensive study, detailing each work, along with a comprehensive overview of the advancements in bin-picking perception.

2026

Augmented Reality and Deep Learning-Based Framework for Defect Detection in Reflective Parts

Autores
Nascimento, RC; Martins, JG; Gonzalez, DG; Silva, MF; Filipe, V; Petry, MR; Rocha, LF;

Publicação
ICARA

Abstract

2026

Intelligent and Automated Technologies for Textile Recycling Pre-Processing: A Systematic Literature Review

Autores
Lopes, D; Pires, EJS; Filipe, V; Silva, MF; Rocha, LF;

Publicação
TECHNOLOGIES

Abstract
Textile-to-textile recycling is strongly constrained by upstream pre-processing, where post-consumer clothing must be identified, separated, and prepared under high variability in materials, appearance, and contamination. This paper presents a Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)-guided systematic literature review of intelligent and automated technologies for textile recycling pre-processing covering the interval between 2015 to 2025. After screening and quality assessment, 21 primary studies published between 2020 and 2025 were included. The literature is synthesized across three task families: (i) identificationof fiber/material, composition, or color; (ii) sorting, considered only when explicit separation strategies are defined to operationalize identification outcomes into routing actions or output streams; and (iii) contaminant detection and/or removal, targeting non-recyclable items. Results show that identification dominates the field (19/21 studies), supported by Red-Green-Blue (RGB) and red-green-blue plus depth (RGB-D) imaging and material-signature sensing, including near-infrared (NIR) spectroscopy, hyperspectral imaging (HSI), and Raman spectroscopy. In contrast, sorting as a defined separation stage is less frequent (4/21), and contaminant-related automation remains sparse (3/21). Most studies are validated in laboratory conditions, with limited semi-industrial evidence, highlighting a persistent perception-to-action gap. Overall, the review indicates that robust separation strategies, representative datasets, and end-to-end system integration remain key bottlenecks for scalable automated textile recycling pre-processing.

2026

Mimic Grasping: A Modular and Flexible Programming-by-Demonstration Robotic Grasping Solution

Autores
de Souza, JPC; Rocha, LF; Moreira, AP; Boaventura Cunha, J;

Publicação
JOURNAL OF FIELD ROBOTICS

Abstract
The Industry 5.0 concept guides the industry to the premise of sustainability, resilience and human-centric solutions. The last related pillar tries to create solutions to empower the people in production line processes since solutions should be designed to be easy to use and easy to learn without discarding the working people. In this regard, it's natural that robots become closer to humans in industrial applications where it is possible to absorb human-machine qualities. Robotic grasping has widespread application with a wide range of applicability. However, engineers and shop-floor operators spend time finding a fast response solution when the production demand changes. Aiming to create a tool to help this procedure in a human-centred fashion, the current paper proposes a programming-by-demonstration solution that is easy to use, reuse, adapt, and increment with its modular design.