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

      Almeida, Waldir; Andaló, Fernanda; Padilha, Rafael; Bertocco, Gabriel; Dias, William; Torres, Ricardo Da Silva; Wainer, Jacques; Rocha, Anderson (Peer reviewed; Journal article, 2020)
      With the widespread use of biometric authentication comes the exploitation of presentation attacks, possibly undermining the effectiveness of these technologies in real-world setups. One example takes place when an impostor, ...
    • Two-tiered face verification with low-memory footprint for mobile devices 

      Padilha, Rafael; Andaló, Fernanda; Bertocco, Gabriel; Almeida, Waldir; Dias, William; Resek, Thiago; Torres, Ricardo Da Silva; Wainer, Jacques; Rocha, Anderson (Peer reviewed; Journal article, 2020)
      Mobile devices have their popularity and affordability greatly increased in recent years. As a consequence of their ubiquity, these devices now carry all sorts of personal data that should be accessed only by their owner. ...