Search Results for author: David Menotti

Found 49 papers, 20 papers with code

Less is more: concatenating videos for Sign Language Translation from a small set of signs

1 code implementation3 Sep 2024 David Vinicius da Silva, Valter Estevam, David Menotti

The limited amount of labeled data for training the Brazilian Sign Language (Libras) to Portuguese Translation models is a challenging problem due to video collection and annotation costs.

Sentence Sign Language Translation +1

Enhancing License Plate Super-Resolution: A Layout-Aware and Character-Driven Approach

1 code implementation27 Aug 2024 Valfride Nascimento, Rayson Laroca, Rafael O. Ribeiro, William Robson Schwartz, David Menotti

Despite significant advancements in License Plate Recognition (LPR) through deep learning, most improvements rely on high-resolution images with clear characters.

License Plate Recognition Optical Character Recognition +2

Multi-Feature Aggregation in Diffusion Models for Enhanced Face Super-Resolution

1 code implementation27 Aug 2024 Marcelo dos Santos, Rayson Laroca, Rafael O. Ribeiro, João C. Neves, David Menotti

Super-resolution algorithms often struggle with images from surveillance environments due to adverse conditions such as unknown degradation, variations in pose, irregular illumination, and occlusions.

Attribute Super-Resolution

A Multilevel Strategy to Improve People Tracking in a Real-World Scenario

no code implementations29 Apr 2024 Cristiano B. de Oliveira, Joao C. Neves, Rafael O. Ribeiro, David Menotti

We used segments of such footage to create the UFPR-Planalto801 dataset for people tracking and re-identification in a real-world scenario.

Leveraging Model Fusion for Improved License Plate Recognition

no code implementations8 Sep 2023 Rayson Laroca, Luiz A. Zanlorensi, Valter Estevam, Rodrigo Minetto, David Menotti

License Plate Recognition (LPR) plays a critical role in various applications, such as toll collection, parking management, and traffic law enforcement.

License Plate Recognition Management

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

Combining Attention Module and Pixel Shuffle for License Plate Super-Resolution

3 code implementations30 Oct 2022 Valfride Nascimento, Rayson Laroca, Jorge de A. Lambert, William Robson Schwartz, David Menotti

The License Plate Recognition (LPR) field has made impressive advances in the last decade due to novel deep learning approaches combined with the increased availability of training data.

Image Super-Resolution License Plate Recognition +1

Global Semantic Descriptors for Zero-Shot Action Recognition

1 code implementation24 Sep 2022 Valter Estevam, Rayson Laroca, Helio Pedrini, David Menotti

This work introduces a new ZSAR method based on the relationships of actions-objects and actions-descriptive sentences.

Action Classification Action Recognition +2

A First Look at Dataset Bias in License Plate Recognition

no code implementations23 Aug 2022 Rayson Laroca, Marcelo Santos, Valter Estevam, Eduardo Luz, David Menotti

We performed experiments on eight datasets, four collected in Brazil and four in mainland China, and observed that each dataset has a unique, identifiable "signature" since a lightweight classification model predicts the source dataset of a license plate (LP) image with more than 95% accuracy.

License Plate Recognition

Federated Learning Enables Big Data for Rare Cancer Boundary Detection

1 code implementation22 Apr 2022 Sarthak Pati, Ujjwal Baid, Brandon Edwards, Micah Sheller, Shih-han Wang, G Anthony Reina, Patrick Foley, Alexey Gruzdev, Deepthi Karkada, Christos Davatzikos, Chiharu Sako, Satyam Ghodasara, Michel Bilello, Suyash Mohan, Philipp Vollmuth, Gianluca Brugnara, Chandrakanth J Preetha, Felix Sahm, Klaus Maier-Hein, Maximilian Zenk, Martin Bendszus, Wolfgang Wick, Evan Calabrese, Jeffrey Rudie, Javier Villanueva-Meyer, Soonmee Cha, Madhura Ingalhalikar, Manali Jadhav, Umang Pandey, Jitender Saini, John Garrett, Matthew Larson, Robert Jeraj, Stuart Currie, Russell Frood, Kavi Fatania, Raymond Y Huang, Ken Chang, Carmen Balana, Jaume Capellades, Josep Puig, Johannes Trenkler, Josef Pichler, Georg Necker, Andreas Haunschmidt, Stephan Meckel, Gaurav Shukla, Spencer Liem, Gregory S Alexander, Joseph Lombardo, Joshua D Palmer, Adam E Flanders, Adam P Dicker, Haris I Sair, Craig K Jones, Archana Venkataraman, Meirui Jiang, Tiffany Y So, Cheng Chen, Pheng Ann Heng, Qi Dou, Michal Kozubek, Filip Lux, Jan Michálek, Petr Matula, Miloš Keřkovský, Tereza Kopřivová, Marek Dostál, Václav Vybíhal, Michael A Vogelbaum, J Ross Mitchell, Joaquim Farinhas, Joseph A Maldjian, Chandan Ganesh Bangalore Yogananda, Marco C Pinho, Divya Reddy, James Holcomb, Benjamin C Wagner, Benjamin M Ellingson, Timothy F Cloughesy, Catalina Raymond, Talia Oughourlian, Akifumi Hagiwara, Chencai Wang, Minh-Son To, Sargam Bhardwaj, Chee Chong, Marc Agzarian, Alexandre Xavier Falcão, Samuel B Martins, Bernardo C A Teixeira, Flávia Sprenger, David Menotti, Diego R Lucio, Pamela Lamontagne, Daniel Marcus, Benedikt Wiestler, Florian Kofler, Ivan Ezhov, Marie Metz, Rajan Jain, Matthew Lee, Yvonne W Lui, Richard McKinley, Johannes Slotboom, Piotr Radojewski, Raphael Meier, Roland Wiest, Derrick Murcia, Eric Fu, Rourke Haas, John Thompson, David Ryan Ormond, Chaitra Badve, Andrew E Sloan, Vachan Vadmal, Kristin Waite, Rivka R Colen, Linmin Pei, Murat AK, Ashok Srinivasan, J Rajiv Bapuraj, Arvind Rao, Nicholas Wang, Ota Yoshiaki, Toshio Moritani, Sevcan Turk, Joonsang Lee, Snehal Prabhudesai, Fanny Morón, Jacob Mandel, Konstantinos Kamnitsas, Ben Glocker, Luke V M Dixon, Matthew Williams, Peter Zampakis, Vasileios Panagiotopoulos, Panagiotis Tsiganos, Sotiris Alexiou, Ilias Haliassos, Evangelia I Zacharaki, Konstantinos Moustakas, Christina Kalogeropoulou, Dimitrios M Kardamakis, Yoon Seong Choi, Seung-Koo Lee, Jong Hee Chang, Sung Soo Ahn, Bing Luo, Laila Poisson, Ning Wen, Pallavi Tiwari, Ruchika Verma, Rohan Bareja, Ipsa Yadav, Jonathan Chen, Neeraj Kumar, Marion Smits, Sebastian R van der Voort, Ahmed Alafandi, Fatih Incekara, Maarten MJ Wijnenga, Georgios Kapsas, Renske Gahrmann, Joost W Schouten, Hendrikus J Dubbink, Arnaud JPE Vincent, Martin J van den Bent, Pim J French, Stefan Klein, Yading Yuan, Sonam Sharma, Tzu-Chi Tseng, Saba Adabi, Simone P Niclou, Olivier Keunen, Ann-Christin Hau, Martin Vallières, David Fortin, Martin Lepage, Bennett Landman, Karthik Ramadass, Kaiwen Xu, Silky Chotai, Lola B Chambless, Akshitkumar Mistry, Reid C Thompson, Yuriy Gusev, Krithika Bhuvaneshwar, Anousheh Sayah, Camelia Bencheqroun, Anas Belouali, Subha Madhavan, Thomas C Booth, Alysha Chelliah, Marc Modat, Haris Shuaib, Carmen Dragos, Aly Abayazeed, Kenneth Kolodziej, Michael Hill, Ahmed Abbassy, Shady Gamal, Mahmoud Mekhaimar, Mohamed Qayati, Mauricio Reyes, Ji Eun Park, Jihye Yun, Ho Sung Kim, Abhishek Mahajan, Mark Muzi, Sean Benson, Regina G H Beets-Tan, Jonas Teuwen, Alejandro Herrera-Trujillo, Maria Trujillo, William Escobar, Ana Abello, Jose Bernal, Jhon Gómez, Joseph Choi, Stephen Baek, Yusung Kim, Heba Ismael, Bryan Allen, John M Buatti, Aikaterini Kotrotsou, Hongwei Li, Tobias Weiss, Michael Weller, Andrea Bink, Bertrand Pouymayou, Hassan F Shaykh, Joel Saltz, Prateek Prasanna, Sampurna Shrestha, Kartik M Mani, David Payne, Tahsin Kurc, Enrique Pelaez, Heydy Franco-Maldonado, Francis Loayza, Sebastian Quevedo, Pamela Guevara, Esteban Torche, Cristobal Mendoza, Franco Vera, Elvis Ríos, Eduardo López, Sergio A Velastin, Godwin Ogbole, Dotun Oyekunle, Olubunmi Odafe-Oyibotha, Babatunde Osobu, Mustapha Shu'aibu, Adeleye Dorcas, Mayowa Soneye, Farouk Dako, Amber L Simpson, Mohammad Hamghalam, Jacob J Peoples, Ricky Hu, Anh Tran, Danielle Cutler, Fabio Y Moraes, Michael A Boss, James Gimpel, Deepak Kattil Veettil, Kendall Schmidt, Brian Bialecki, Sailaja Marella, Cynthia Price, Lisa Cimino, Charles Apgar, Prashant Shah, Bjoern Menze, Jill S Barnholtz-Sloan, Jason Martin, Spyridon Bakas

Although machine learning (ML) has shown promise in numerous domains, there are concerns about generalizability to out-of-sample data.

Boundary Detection Federated Learning

Image-based Automatic Dial Meter Reading in Unconstrained Scenarios

1 code implementation8 Jan 2022 Gabriel Salomon, Rayson Laroca, David Menotti

The replacement of analog meters with smart meters is costly, laborious, and far from complete in developing countries.

Dial Meter Reading

On the Cross-dataset Generalization in License Plate Recognition

1 code implementation2 Jan 2022 Rayson Laroca, Everton V. Cardoso, Diego R. Lucio, Valter Estevam, David Menotti

Automatic License Plate Recognition (ALPR) systems have shown remarkable performance on license plates (LPs) from multiple regions due to advances in deep learning and the increasing availability of datasets.

Data Augmentation License Plate Detection +4

Dense Video Captioning Using Unsupervised Semantic Information

1 code implementation15 Dec 2021 Valter Estevam, Rayson Laroca, Helio Pedrini, David Menotti

We introduce a method to learn unsupervised semantic visual information based on the premise that complex events (e. g., minutes) can be decomposed into simpler events (e. g., a few seconds), and that these simple events are shared across several complex events.

Dense Video Captioning

A Decidability-Based Loss Function

no code implementations12 Sep 2021 Pedro Silva, Gladston Moreira, Vander Freitas, Rodrigo Silva, David Menotti, Eduardo Luz

Nowadays, deep learning is the standard approach for a wide range of problems, including biometrics, such as face recognition and speech recognition, etc.

Face Recognition speech-recognition +2

Computational methods for differentially expressed gene analysis from RNA-Seq: an overview

no code implementations8 Sep 2021 Juliana Costa-Silva, Douglas S. Domingues, David Menotti, Mariangela Hungria, Fabricio M Lopes

The analysis of differential gene expression from RNA-Seq data has become a standard for several research areas mainly involving bioinformatics.

Open-set Face Recognition for Small Galleries Using Siamese Networks

no code implementations14 May 2021 Gabriel Salomon, Alceu Britto, Rafael H. Vareto, William R. Schwartz, David Menotti

Therefore, open-set face recognition is a subject of increasing interest as it deals with identifying individuals in a space where not all faces are known in advance.

Face Recognition Retrieval

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

Automatic Counting and Identification of Train Wagons Based on Computer Vision and Deep Learning

no code implementations30 Oct 2020 Rayson Laroca, Alessander Cidral Boslooper, David Menotti

In this work, we present a robust and efficient solution for counting and identifying train wagons using computer vision and deep learning.

Deep Learning for Image-based Automatic Dial Meter Reading: Dataset and Baselines

no code implementations6 May 2020 Gabriel Salomon, Rayson Laroca, David Menotti

Smart meters enable remote and automatic electricity, water and gas consumption reading and are being widely deployed in developed countries.

Dial Meter Reading

Towards an Effective and Efficient Deep Learning Model for COVID-19 Patterns Detection in X-ray Images

2 code implementations12 Apr 2020 Eduardo Luz, Pedro Lopes Silva, Rodrigo Silva, Ludmila Silva, Gladston Moreira, David Menotti

Thus, the main goal of this work is to propose an accurate yet efficient method in terms of memory and processing time for the problem of COVID-19 screening in chest X-rays.

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

Unconstrained Periocular Recognition: Using Generative Deep Learning Frameworks for Attribute Normalization

no code implementations10 Feb 2020 Luiz A. Zanlorensi, Hugo Proença, David Menotti

Ocular biometric systems working in unconstrained environments usually face the problem of small within-class compactness caused by the multiple factors that jointly degrade the quality of the obtained data.

Attribute

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.

Survey

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

Vehicle-Rear: A New Dataset to Explore Feature Fusion for Vehicle Identification Using Convolutional Neural Networks

1 code implementation13 Nov 2019 Icaro O. de Oliveira, Rayson Laroca, David Menotti, Keiko V. O. Fonseca, Rodrigo Minetto

To explore our dataset we design a two-stream CNN that simultaneously uses two of the most distinctive and persistent features available: the vehicle's appearance and its license plate.

Fine-Grained Vehicle Classification License Plate Detection +3

Zero-Shot Action Recognition in Videos: A Survey

no code implementations13 Sep 2019 Valter Estevam, Helio Pedrini, David Menotti

Zero-Shot Action Recognition has attracted attention in the last years and many approaches have been proposed for recognition of objects, events and actions in images and videos.

Action Recognition In Still Images Action Recognition In Videos +3

An Efficient and Layout-Independent Automatic License Plate Recognition System Based on the YOLO detector

1 code implementation4 Sep 2019 Rayson Laroca, Luiz A. Zanlorensi, Gabriel R. Gonçalves, Eduardo Todt, William Robson Schwartz, David Menotti

This paper presents an efficient and layout-independent Automatic License Plate Recognition (ALPR) system based on the state-of-the-art YOLO object detector that contains a unified approach for license plate (LP) detection and layout classification to improve the recognition results using post-processing rules.

Data Augmentation License Plate Detection +2

Simultaneous Iris and Periocular Region Detection Using Coarse Annotations

no code implementations31 Jul 2019 Diego R. Lucio, Rayson Laroca, Luiz A. Zanlorensi, Gladston Moreira, David Menotti

In this work, we propose to detect the iris and periocular regions simultaneously using coarse annotations and two well-known object detectors: YOLOv2 and Faster R-CNN.

Iris Segmentation

Convolutional Neural Networks for Automatic Meter Reading

no code implementations25 Feb 2019 Rayson Laroca, Victor Barroso, Matheus A. Diniz, Gabriel R. Gonçalves, William Robson Schwartz, David Menotti

This dataset is, to the best of our knowledge, three times larger than the largest public dataset found in the literature and contains a well-defined evaluation protocol to assist the development and evaluation of AMR methods.

Counter Recognition Data Augmentation +2

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

A Robust Real-Time Automatic License Plate Recognition Based on the YOLO Detector

2 code implementations26 Feb 2018 Rayson Laroca, Evair Severo, Luiz A. Zanlorensi, Luiz S. Oliveira, Gabriel Resende Gonçalves, William Robson Schwartz, David Menotti

First, in the SSIG dataset, composed of 2, 000 frames from 101 vehicle videos, our system achieved a recognition rate of 93. 53% and 47 Frames Per Second (FPS), performing better than both Sighthound and OpenALPR commercial systems (89. 80% and 93. 03%, respectively) and considerably outperforming previous results (81. 80%).

Data Augmentation License Plate Detection +2

Benchmark for License Plate Character Segmentation

no code implementations11 Jul 2016 Gabriel Resende Gonçalves, Sirlene Pio Gomes da Silva, David Menotti, William Robson Schwartz

In general, ALPR is divided into the following problems: detection of on-track vehicles, license plates detection, segmention of license plate characters and optical character recognition (OCR).

License Plate Detection License Plate Recognition +3

Deep Representations for Iris, Face, and Fingerprint Spoofing Detection

no code implementations8 Oct 2014 David Menotti, Giovani Chiachia, Allan Pinto, William Robson Schwartz, Helio Pedrini, Alexandre Xavier Falcao, Anderson Rocha

We assume a very limited knowledge about biometric spoofing at the sensor to derive outstanding spoofing detection systems for iris, face, and fingerprint modalities based on two deep learning approaches.

Person Identification

Cannot find the paper you are looking for? You can Submit a new open access paper.