Principios básicos de las técnicas biométricas, características de los datos biométricos y tecnologías biométricas actuales. |
Identity versus biometric traits. Types of biometric traits. Within and between variance of biometric signatures. Sensors dependency of biometric signatures. The seven pillars of biometrics. Feature extraction. Compression. Representation versus discrimination Differences among recognition, identification, verification and authentication. Types of errors: TER, ERR, FAR, FRR. Physiologic features: fingerprints, iris, face, palm, speech. Behavioral features: signature (static and dynamic), speech, expression, typing rate. Specificities, pros and cons when using every biometric trait. |
Face recognition |
The problem of face detection and normalization. Holistic techniques (eigenfaces, fisherfaces) versus local techniques (template matching, NCC, Elastic Bunch Graph Matching). The problem of variation in face pose and illumination. Shape and Appearance Models. |
Fingerprint recognition |
Types of sensors. Minutiae representation and local texture representation. Hausdorff distance. Gabor filtering. Deformation tolerance. |
handwritten signature recognition |
Types of sensors. Feature extraction of static signatures: image statistics. Feature extraction of dynamic signatures: temporal parameters. DTW modeling, HMM modeling, Edit distance between chains. The problem of skilled forgeries. |
Seguridade e privacidade das mostras biométricas |
Técnicas de transformación do espazo de características ("salting", "hashing"). Sistemas criptobiométricos (métodos "key-binding" e "key-generation"). Ocultadción de datos en biometría. |