Waldir R. De Almeida

Nearest neighbors distance ratio open-set classifier

Pedro Ribeiro Mendes Júnior, Roberto Souza, Rafael de Oliveira Werneck et al. · Machine Learning · 2016 · 269 citations · Full text

Classification Method, Machine Vision, Machine Learning +10

A competition on generalized software-based face presentation attack detection in mobile scenarios

Zinelabidine Boulkenafet, Jukka Komulainen, Zahid Akhtar et al. · 2017 · 152 citations

Presentation Attack Instruments, Engineering, Feature Detection +20

Detecting face presentation attacks in mobile devices with a patch-based CNN and a sensor-aware loss function

Waldir R. De Almeida, Fernanda Andaló, Rafael Padilha et al. · PLoS ONE · 2020 · 45 citations · Full text

Engineering, Biometric Privacy, Information Security +24

Pixel-Level Tissue Classification for Ultrasound Images

Daniel V. Pazinato, Bernardo V. Stein, Waldir R. De Almeida et al. · IEEE Journal of Biomedical and Health Informatics · 2014 · 38 citations

Cross-dataset emotion recognition from facial expressions through convolutional neural networks

William Dias, Fernanda Andaló, Rafael Padilha et al. · Journal of Visual Communication and Image Representation · 2021 · 31 citations

Facial Recognition System, Engineering, Machine Learning +11