MyDroid : ensinar o meu robô com o Android

Mestrado em Engenharia de Computadores e TelemáticaOs robôs começaram a ser usados em diversas áreas. Os principais objectivos são a optimização de trabalho e redução de custos. No entanto o modo de interacção com estes equipamentos parece não acompanhar esta evolução. Com o surgimento dos smartphones chega uma nova oportunidade. Estes pequenos dispositivos têm uma elevada capacidade de processamento e estão equipamentos com um conjunto de recursos que podem ser usados na interacção homem-máquina. Esta dissertação propõe um conjunto de soluções para interação com robôs, onde o smartphone é o meio usado para interagir (ao nivel de controlo e ensino). Pretende-se assim avaliar se o smartphone é uma alternativa viável para a interação.Robots started to be used in several areas. The main objectives are work optimization and cost reduction. However, an interaction method with these devices does not seem to follow this evolution. With the rise of smartphones comes a new opportunity. These small devices have a high processing capacity and are equipped with a set of resources that can be used for manmachine interaction. This thesis proposes a set of solutions for interaction with robots, where a smartphone is the instrument used to interact (both commanding and teaching). It is intended to assess whether the smartphone is a viable alternative for interaction

On the Generalisation Capabilities of Fingerprint Presentation Attack Detection Methods in the Short Wave Infrared Domain

Nowadays, fingerprint-based biometric recognition systems are becoming increasingly popular. However, in spite of their numerous advantages, biometric capture devices are usually exposed to the public and thus vulnerable to presentation attacks (PAs). Therefore, presentation attack detection (PAD) methods are of utmost importance in order to distinguish between bona fide and attack presentations. Due to the nearly unlimited possibilities to create new presentation attack instruments (PAIs), unknown attacks are a threat to existing PAD algorithms. This fact motivates research on generalisation capabilities in order to find PAD methods that are resilient to new attacks. In this context, we evaluate the generalisability of multiple PAD algorithms on a dataset of 19,711 bona fide and 4,339 PA samples, including 45 different PAI species. The PAD data is captured in the short wave infrared domain and the results discuss the advantages and drawbacks of this PAD technique regarding unknown attacks