Search Results for author: Alceu S. Britto Jr.

Found 18 papers, 1 papers with code

Do We Train on Test Data? The Impact of Near-Duplicates on License Plate Recognition

no code implementations10 Apr 2023 Rayson Laroca, Valter Estevam, Alceu S. Britto Jr., Rodrigo Minetto, David Menotti

This work draws attention to the large fraction of near-duplicates in the training and test sets of datasets widely adopted in License Plate Recognition (LPR) research.

License Plate Recognition

Evaluation of Different Annotation Strategies for Deployment of Parking Spaces Classification Systems

1 code implementation22 Jul 2022 Andre G. Hochuli, Alceu S. Britto Jr., Paulo R. L. de Almeida, Williams B. S. Alves, Fabio M. C. Cagni

When using vision-based approaches to classify individual parking spaces between occupied and empty, human experts often need to annotate the locations and label a training set containing images collected in the target parking lot to fine-tune the system.

Multiscale Analysis for Improving Texture Classification

no code implementations21 Apr 2022 Steve T. M. Ataky, Diego Saqui, Jonathan de Matos, Alceu S. Britto Jr., Alessandro L. Koerich

Image pyramid multiresolution representations are a useful data structure for image analysis and manipulation over a spectrum of spatial scales.

Classification Texture Classification

A New Periocular Dataset Collected by Mobile Devices in Unconstrained Scenarios

no code implementations24 Nov 2020 Luiz A. Zanlorensi, Rayson Laroca, Diego R. Lucio, Lucas R. Santos, Alceu S. Britto Jr., David Menotti

Thus, the use of datasets containing many subjects is essential to assess biometric systems' capacity to extract discriminating information from the periocular region.

Face Recognition Image Classification +1

A multimodal approach for multi-label movie genre classification

no code implementations1 Jun 2020 Rafael B. Mangolin, Rodolfo M. Pereira, Alceu S. Britto Jr., Carlos N. Silla Jr., Valéria D. Feltrim, Diego Bertolini, Yandre M. G. Costa

Based on the F-Score metric, our best result, 0. 628, was obtained by the fusion of a classifier created using LSTM on the synopses, and a classifier created using CNN on movie trailer frames.

Classification General Classification +2

Two-View Fine-grained Classification of Plant Species

no code implementations18 May 2020 Voncarlos M. Araujo, Alceu S. Britto Jr., Luiz E. S. Oliveira, Alessandro L. Koerich

Automatic plant classification is a challenging problem due to the wide biodiversity of the existing plant species in a fine-grained scenario.

Classification General Classification +1

An End-to-End Approach for Recognition of Modern and Historical Handwritten Numeral Strings

no code implementations28 Mar 2020 Andre G. Hochuli, Alceu S. Britto Jr., Jean P. Barddal, Luiz E. S. Oliveira, Robert Sabourin

An end-to-end solution for handwritten numeral string recognition is proposed, in which the numeral string is considered as composed of objects automatically detected and recognized by a YoLo-based model.

Segmentation

CNN Hyperparameter tuning applied to Iris Liveness Detection

no code implementations12 Feb 2020 Gabriela Y. Kimura, Diego R. Lucio, Alceu S. Britto Jr., David Menotti

The iris pattern has significantly improved the biometric recognition field due to its high level of stability and uniqueness.

General Classification

Ocular Recognition Databases and Competitions: A Survey

no code implementations21 Nov 2019 Luiz A. Zanlorensi, Rayson Laroca, Eduardo Luz, Alceu S. Britto Jr., Luiz S. Oliveira, David Menotti

The use of the iris and periocular region as biometric traits has been extensively investigated, mainly due to the singularity of the iris features and the use of the periocular region when the image resolution is not sufficient to extract iris information.

Deep Representations for Cross-spectral Ocular Biometrics

no code implementations21 Nov 2019 Luiz A. Zanlorensi, Diego R. Lucio, Alceu S. Britto Jr., Hugo Proença, David Menotti

One of the major challenges in ocular biometrics is the cross-spectral scenario, i. e., how to match images acquired in different wavelengths (typically visible (VIS) against near-infrared (NIR)).

Face Recognition

Memory Integrity of CNNs for Cross-Dataset Facial Expression Recognition

no code implementations28 May 2019 Dylan C. Tannugi, Alceu S. Britto Jr., Alessandro L. Koerich

A common way to circumvent the lack of data is to use CNNs trained on large datasets of different domains and fine-tuning the layers of such networks to the target domain.

Facial Expression Recognition Facial Expression Recognition (FER)

Texture CNN for Thermoelectric Metal Pipe Image Classification

no code implementations28 May 2019 Daniel Vriesman, Alessandro Zimmer, Alceu S. Britto Jr., Alessandro L. Koerich

In this paper, the concept of representation learning based on deep neural networks is applied as an alternative to the use of handcrafted features in a method for automatic visual inspection of corroded thermoelectric metallic pipes.

Classification General Classification +3

Robust Iris Segmentation Based on Fully Convolutional Networks and Generative Adversarial Networks

no code implementations4 Sep 2018 Cides S. Bezerra, Rayson Laroca, Diego R. Lucio, Evair Severo, Lucas F. Oliveira, Alceu S. Britto Jr., David Menotti

In this paper, two approaches for robust iris segmentation based on Fully Convolutional Networks (FCNs) and Generative Adversarial Networks (GANs) are described.

Iris Segmentation Segmentation

Fully Convolutional Networks and Generative Adversarial Networks Applied to Sclera Segmentation

no code implementations22 Jun 2018 Diego R. Lucio, Rayson Laroca, Evair Severo, Alceu S. Britto Jr., David Menotti

The initial and paramount step for performing this type of recognition is the segmentation of the region of interest, i. e. the sclera.

Generative Adversarial Network

People Counting in Crowded and Outdoor Scenes using a Hybrid Multi-Camera Approach

no code implementations2 Apr 2017 Fabio Dittrich, Luiz E. S. de Oliveira, Alceu S. Britto Jr., Alessandro L. Koerich

For such an aim, corner points are extracted from groups of people in a foreground image and computed by a learning algorithm which estimates the number of people in the scene.

PKLot-A robust dataset for parking lot classification

no code implementations Expert Systems with Applications 2015 Paulo R.L. de Almeida, Luiz S. Oliveira, Alceu S. Britto Jr., Eunelson J. Silva Jr., Alessandro L. Koerich

To mitigate this difficulty, in this paper we introduce a new parking lot dataset composed of 695, 899 images captured from two parking lots with three different camera views.

Benchmarking Classification +1

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