june 15th, 2004 biosecure1 biosecure : future of biometrics and evaluations gérard chollet...
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June 15th, 2004June 15th, 2004 BioSecureBioSecure 11
BioSecure : BioSecure : Future of Biometrics Future of Biometrics
and Evaluationsand Evaluations
Gérard CHOLLETGérard CHOLLETCNRS-LTCI, GET-ENSTCNRS-LTCI, GET-ENST
European Biometric ForumEuropean Biometric Forum
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OutlineOutline State of affairs (history, tasks, security, State of affairs (history, tasks, security,
forensic,…)forensic,…) Modalities (biological, behavioral, hybrid)Modalities (biological, behavioral, hybrid) Fusion (features, scores, decisions)Fusion (features, scores, decisions) Imposture (occasional, dedicated)Imposture (occasional, dedicated) Evaluations (algorithms, field tests, Evaluations (algorithms, field tests,
ergonomy,…)ergonomy,…) ConclusionsConclusions PerspectivesPerspectives
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HistoryHistory
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Recognition tasksRecognition tasks
Identification (open or closed set)Identification (open or closed set) VerificationVerification IndexingIndexing TrackingTracking Typology (ethny)Typology (ethny)
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Biometric Identity Biometric Identity VerificationVerification
Physical (face, finger, hand, eye, ear,…)Physical (face, finger, hand, eye, ear,…) Behavioral (speech, signature, gait,…)Behavioral (speech, signature, gait,…) Decision cost (FA, FR, priors, costs,…)Decision cost (FA, FR, priors, costs,…) Receiver Operating Characteristic CurveReceiver Operating Characteristic Curve Reference systems (open software)Reference systems (open software) Evaluations (algorithms, field trials, Evaluations (algorithms, field trials,
ergonomy,…)ergonomy,…)
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Biological modalitiesBiological modalities(liveness tests)(liveness tests)
Fingerprints (dummy fingers)Fingerprints (dummy fingers) Palmprints (gloves)Palmprints (gloves) Face, body (morphing)Face, body (morphing) Iris (contact lenses)Iris (contact lenses) RetinaRetina Ears (morphing)Ears (morphing) ADN (processing time)ADN (processing time) ……
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Dummy fingersDummy fingers
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Morphing, avatarsMorphing, avatars
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Behavioral modalitiesBehavioral modalities
Speech (acoustic, lexical, dialect, accent,Speech (acoustic, lexical, dialect, accent,…)…)
Signature (on-line, off-line)Signature (on-line, off-line) Handwriting (on-line, off-line)Handwriting (on-line, off-line) KeystrokeKeystroke Gesture (gait, emotions, tic,…)Gesture (gait, emotions, tic,…) ……
June 15th, 2004June 15th, 2004 BioSecureBioSecure 1010
MotivationsMotivations Augmenter la robustesse des systèmes d’authentification Augmenter la robustesse des systèmes d’authentification
biométrique biométrique Authentification à partir des informations vocales et visuelles :Authentification à partir des informations vocales et visuelles :
Meilleurs taux de reconnaissanceMeilleurs taux de reconnaissance Technologie biométrique toujours bien acceptée, car non intrusiveTechnologie biométrique toujours bien acceptée, car non intrusive
Rendre l’imposture plus difficile :Rendre l’imposture plus difficile : augmentation du coût de l’impostureaugmentation du coût de l’imposture
= =
nouveaux champs d’applicationsnouveaux champs d’applications
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Talking Face RecognitionTalking Face Recognition(hybrid verification)(hybrid verification)
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Acoutic featuresAcoutic features
Short term spectral analysisShort term spectral analysis
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Lip featuresLip features
Tracking lip movementsTracking lip movements
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A talking face modelA talking face model
Using Hidden Markov Models (HMMs)Using Hidden Markov Models (HMMs)
Acoustic parameters
Visual parameters
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ConclusionConclusion
Modélisation spatio-temporel des traits extraits des visages parlants
Apprentissage d’un modèle statistique spécifique aux articulateurs de parole et de la parole d’un client
Acceptation / Rejet de l’identité proclamée basée sur le test du rapport de vraisemblance