Biometric recognition using a classification neural network

G - Physics – 06 – K

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G06K 9/62 (2006.01) G06K 9/00 (2006.01)

Patent

CA 2256672

A biometric recognition system involves two phases: creation of a master pattern set of authorized users biometric indicia and authentication using a classification neural network. To create the master pattern set, an image of an authorized biometric user's indicia is divided into a plurality of regions of interest or "features". The system determines which features are the most useful for identification purposes. Master patterns are then created from these master features, thus creating a master set. During authentication, a sample pattern set of a user to be authenticated is similarly created. A neural network is used to compare the sample pattern set with the master pattern set to determine whether the user should be authenticated.

Un système de reconnaissance biométrique comprend deux phases: création d'un ensemble structure maîtresse constitué des indices biométriques des utilisateurs autorisés, puis authentification au moyen d'un réseau neuronal de classification. Pour créer l'ensemble structure maîtresse, on divise une image des indices biométriques d'un utilisateur autorisé en une pluralité de zones à étudier ou "caractéristiques". Le système détermine quelles caractéristiques sont les plus utiles à des fins d'identification. Les structures maîtresses sont ensuite créées à partir de ces caractéristiques maîtresses, ce qui crée un ensemble structure maîtresse. Durant l'authentification, un ensemble structure échantillon d'un utilisateur à authentifier est créé d'une manière similaire. On utilise un réseau neuronal pour comparer la structure échantillon à la structure maîtresse, de façon à déterminer si l'utilisateur doit être authentifié.

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