Search Results for author: Luciano Oliveira

Found 9 papers, 0 papers with code

OdontoAI: A human-in-the-loop labeled data set and an online platform to boost research on dental panoramic radiographs

no code implementations29 Mar 2022 Bernardo Silva, Laís Pinheiro, Brenda Sobrinho, Fernanda Lima, Bruna Sobrinho, Kalyf Abdalla, Matheus Pithon, Patrícia Cury, Luciano Oliveira

In a novel online platform, called OdontoAI, created to work as task central for this novel data set, we released 4, 000 images, from which 2, 000 have their labels publicly available for model fitting.

Semantic Segmentation

Attention-based fusion of semantic boundary and non-boundary information to improve semantic segmentation

no code implementations5 Aug 2021 Jefferson Fontinele, Gabriel Lefundes, Luciano Oliveira

To the best of our knowledge, ours is the first work to show that boundary detection can improve semantic segmentation when fused through a semantic fusion gate (attention model).

Boundary Detection Segmentation +1

Information Ranking Using Optimum-Path Forest

no code implementations16 Feb 2021 Nathalia Q. Ascenção, Luis C. S. Afonso, Danilo Colombo, Luciano Oliveira, João P. Papa

The task of learning to rank has been widely studied by the machine learning community, mainly due to its use and great importance in information retrieval, data mining, and natural language processing.

BIG-bench Machine Learning Image Retrieval +3

On estimating gaze by self-attention augmented convolutions

no code implementations25 Aug 2020 Gabriel Lefundes, Luciano Oliveira

In our experiments, results showed a decrease of the average angular error by 2. 38% when compared to state-of-the-art methods on the MPIIFaceGaze data set, and a second-place on the EyeDiap data set.

Gaze Estimation

Rotation-invariant shipwreck recognition with forward-looking sonar

no code implementations11 Oct 2019 Gustavo Neves, Rômulo Cerqueira, Jan Albiez, Luciano Oliveira

To deal with that problem, we propose a novel trainable method to detect and recognize (identify) specific target objects under the sea with a forward-looking sonar.

Object Recognition

ISEC: Iterative over-Segmentation via Edge Clustering

no code implementations16 Feb 2018 Marcelo Santos, Luciano Oliveira

Several image pattern recognition tasks rely on superpixel generation as a fundamental step.

Clustering Segmentation +3

How far did we get in face spoofing detection?

no code implementations26 Oct 2017 Luiz Souza, Mauricio Pamplona, Luciano Oliveira, João Papa

The growing use of control access systems based on face recognition shed light over the need for even more accurate systems to detect face spoofing attacks.

Face Recognition

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