Fingerprint analyzing and encoding system

G - Physics – 06 – K

Patent

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G06K 9/00 (2006.01) G07C 9/00 (2006.01) G07F 7/10 (2006.01)

Patent

CA 2176244

A system for converting an image-enhanced digitized raster fingerprint image to vector lines in order to generate a unique identification value for the fingerprint. The raster image pixels are converted to vector lines along the fingerprint ridges and the vector lines are classified and converted according to type. The line types are then analyzed and a list of identification features corresponding to the vector line types is generated. The identification features between the vector line types are compared and the image is classified according to fingerprint class. A unique identification value is then generated by numerically encoding the classified identification features.

L'invention se rapporte à un système de conversion d'une image d'une empreinte digitale à trame de balayage numérisé améliorée en lignes vectorielles afin de générer une valeur d'identification unique de l'empreinte digitale. Les pixels d'image à trame de balayage sont convertis en lignes vectorielles le long des stries de l'empreinte digitale et les lignes vectorielles sont classifiées et converties conformément à un type. Les types de ligne sont ensuite analysées et une liste de caractéristiques d'identification correspondant aux types des lignes vectorielles est générée. Les caractéristiques d'identification entre les types de lignes vectorielles sont comparées et l'image est classifiée selon une catégorie d'empreintes digitales. Une valeur d'identification unique est ensuite générée par codage numérique des caractéristiques d'identification classifiées.

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