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Evaluation de la qualite d’images pour la securitebiometrique (IQA)
Application a l’iris, a l’empreinte digitale et a la reconnaissancefaciale
Adil OULGHARD
Universite Mohammed V Rabat
Faculte des sciences Rabat
Sous la demande de Mr:
Pr. Ahmed Drissi El Maliani,Faculte des sciences de Fes.
6 fevrier 2017
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Plan
Introduction
Objectifs
Hypothese
Methode
Experience et resultat
Conclusion
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Applications
Visage 2DEmpreintes digital Iris
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Classification : Attaques et Methodes
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Probleme
Manque de generalite des methodes actuels
Exemples :
• La frequence des cretes et des vallees dans les empreintesdigitales
• La dilatation pupillaire de l’œil
Objectif
Fournir une methode de capacite multi-biometrique etmulti-attaque
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Hypothese
Une fausse image ait une qualite differente de celle d’unechantillon reel
Differences de qualite attendues :
• Degre de nettete
• Niveaux de couleur et de luminance
• Entropie (Qualite d’infos trouve dans les deux types d’images)
• Distorsion structurelles
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Diagramme de l’approche de detection
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
25 Mesures de qualite d’image
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
25 Mesures de qualite d’image
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Experience et resultat
• FGR :False Genuine Rate
• FFR :False Fake Rate
• HTER :HTER=(FGR+FFR)/2
• Temps moyen d’execution
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Experience Iris
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Resultat Iris
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Experience Empreintes digital
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Resultat Empreintes digital
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Experience Visage 2D
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Resultat Visage 2D
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Introduction Objectifs Hypothese Methode Experience et resultat Conclusion
Conclusion
• Hypothese valide
• Multi-attaque
• Multi-biometrique
• Avantageux
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