Search Results for author: Tiago Carvalho

Found 3 papers, 0 papers with code

FaceSpoof Buster: a Presentation Attack Detector Based on Intrinsic Image Properties and Deep Learning

no code implementations7 Feb 2019 Rodrigo Bresan, Allan Pinto, Anderson Rocha, Carlos Beluzo, Tiago Carvalho

Techniques that rely on trespassing these kind of systems by using a forged biometric sample, such as a printed paper or a recorded video of a genuine access, are known as presentation attacks, but may be also referred in the literature as face spoofing.

Face Recognition Meta-Learning

A Preliminary Study on Hyperparameter Configuration for Human Activity Recognition

no code implementations25 Oct 2018 Kemilly Dearo Garcia, Tiago Carvalho, João Mendes-Moreira, João M. P. Cardoso, André C. P. L. F. de Carvalho

In this paper, we present a semi-supervised classifier and a study regarding the influence of hyperparameter configuration in classification accuracy, depending on the user and the activities performed by each user.

Activity Recognition General Classification

Exposing Computer Generated Images by Using Deep Convolutional Neural Networks

no code implementations28 Nov 2017 Edmar R. S. de Rezende, Guilherme C. S. Ruppert, Antonio Theophilo, Tiago Carvalho

The recent computer graphics developments have upraised the quality of the generated digital content, astonishing the most skeptical viewer.

Transfer Learning

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