System for contactless recognition of hand and finger lines

G - Physics – 06 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G06K 9/20 (2006.01) A61B 5/117 (2006.01) G07C 9/00 (2006.01)

Patent

CA 2330115

A process for reproducing hand and/or finger lines with a camera works without skin contact with the recording device. By using linearly or circularly polarized light in the paths of the illuminating and the reproducing light rays it is possible to obtain separate representations of the pattern of the epidermis and the one of the hypodermis. An image of the relief of the skin that is rich in contrast is obtained in this way, on the one hand, and it is possible to acquire information from the deeper disposed layers of the skin already supplied with blood. An algorithm searches the skin patterns of the palm of the hand for line elements of different strengths and directions (vectors). The computed numerical identification contains overall frequencies of vectors as well as amplitudes and phases of frequency components of projections of the vector images of both patterns. The process permits controlling people from a distance, complete protection of the measuring system and enhanced security against fraud.

L'invention concerne un procédé de représentation des lignes de la main et/ou des doigts à l'aide d'une caméra, qui est mis en oeuvre sans contact de la peau avec le dispositif de prise de vue. Grâce à l'utilisation d'une lumière polarisée de façon linéaire ou circulaire dans le chemin des rayons d'éclairage et de formation d'image, on peut obtenir une représentation séparée du dessin de l'épiderme et du derme. Ainsi, d'une part on obtient une prise de vue riche en contraste des reliefs de la peau, et, d'autre part, on peut obtenir des informations des couches de la peau plus profondes, déjà irriguées. Un algorithme analyse le dessin de la peau de la surface de la main selon des éléments de ligne de différentes épaisseurs et de différents sens (vecteurs). La caractéristique numérique calculée contient les fréquences globales de vecteurs ainsi que des amplitudes et des phases de composantes harmoniques de projection des images de vecteur des deux dessins. Le procédé permet le contrôle de personnes à distance, la protection complète du dispositif de mesure et une sécurité augmentée vis-à-vis de la fraude.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

System for contactless recognition of hand and finger lines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for contactless recognition of hand and finger lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for contactless recognition of hand and finger lines will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1494629

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.