A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 3/107 (2006.01) A61B 5/117 (2006.01)
Patent
CA 2731386
The object of the invention is a method and the corresponding device thereof for recognition of persons incorporating, as biometric constant and determinant for each individual, the irregularities of the map of the posterior surface of the cornea, being different in each individual. The invention is based on taking an image exclusively of the second ocular dioptric with the objective of determining the irregularities of the surface map thereof with respect to a standardised surface (sphere, ellipsoid, torus, etc.) and quantifying them, yielding a set of attributes characteristic of each person utilised as a system of authentication, that is to say utilising the variations and calculations carried out therewith as biometric minutiae. Taking an image is of proven safety insofar as it may be taken without any contraindication whatsoever and as many times as necessary.
L'invention concerne un procédé et un dispositif associé de reconnaissance des personnes qui font appel, comme constante biométrique et déterminante propre à chaque individu, aux irrégularités de la carte topographique de la surface postérieure de la cornée, lesquelles irrégularités diffèrent d'un individu à l'autre. Selon l'invention, on capture une image du second dioptre oculaire exclusivement, afin de déterminer les irrégularités de sa carte topographique par rapport à une surface normalisée (sphérique, ellipsoïdale, torique, etc.) et de quantifier lesdites irrégularités. On obtient de la sorte un ensemble de traits caractéristiques de chaque personne que l'on utilise comme système d'authentification, sur la base de points caractéristiques biométriques constitués par les variations et les calculs desdites variations. La capture d'image offre une garantie de sécurité, étant donné qu'elle ne souffre d'aucune contre-indication et qu'on peut la répéter aussi souvent que nécessaire.
Smart & Biggar
Universidad Complutense de Madrid
LandOfFree
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