no code implementations • 10 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.
1 code implementation • 22 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.
no code implementations • 21 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.
no code implementations • 24 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.
Ranked #1 on Image Classification on Imbalanced CUB-200-2011
no code implementations • 1 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.
no code implementations • 18 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.
no code implementations • 28 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.
no code implementations • 12 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.
no code implementations • 21 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.
no code implementations • 21 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)).
no code implementations • 22 Jun 2019 • Kelly L. Wiggers, Alceu S. Britto Jr., Laurent Heutte, Alessandro L. Koerich, Luiz S. Oliveira
This paper presents a novel approach for image retrieval and pattern spotting in document image collections.
no code implementations • 28 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)
no code implementations • 28 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.
no code implementations • 4 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.
no code implementations • 29 Aug 2018 • Luiz A. Zanlorensi, Eduardo Luz, Rayson Laroca, Alceu S. Britto Jr., Luiz S. Oliveira, David Menotti
The use of iris as a biometric trait is widely used because of its high level of distinction and uniqueness.
no code implementations • 22 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.
no code implementations • 2 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.
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.