Method and apparatus for recognition of biometric data with...

Details Method and apparatus for recognition of biometric data with... Method and apparatus for recognition of biometric data with...

G - Physics

06

K

G06K 9/00 (2006.01)

Patent

CA 2488513

According to the invention, an object is simultaneously detected from at least two different recording directions, and a three-dimensional model of the viewed object is calculated from at least two representations and is compared with a reference model that has also been obtained from several representations. The object is identified as correct if the data obtained from the representations simultaneously correspond to the data of the reference model except for predetermined tolerances. Furthermore, the light sources are switched in a pulse-encoded manner while the signals are synchronously evaluated by means of an image receiver array. The aim of the invention is to be able to use said method and device in a modular manner in existing recognition methods while being able to detect forgeries created by applying masks to the objects that are to be recognized.

L'invention concerne un objet qui est d~tect~ simultan~ment ~ partir d'au moins deux directions diff~rentes et un mod­le tridimensinonnel de l'objet observ~ est calcul~ ~ partir d'au moins deux images. Ensuite, on compare le mod­le ainsi obtenu ~ un mod­le de r~f~rence ~galement compos~ de plusieurs images. L'objet est identifi~ comme ~tant le bon, si les donn~es enregistr~es ~ partir des images co~ncident simultan~ment avec les donn~es du mod­le de r~f~rence jusqu'aux tol~rances respectivement pr~d~termin~es. De plus, on connecte les sources lumineuses cod~es en impulsions et simultan~ment on ~value les signaux ~ l'aide d'un r~seau de r~cepteurs d'images. L'invention est modulaire par rapport au proc~d~ de reconnaissance existant et permet de d~tecter de fa×on sÛre les falsifications produites par l'application de masques sur les objets ~ reconna¹tre.

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