G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 9/00 (2006.01)
Patent
CA 2488512
The invention relates to a method and arrangement for contactless detection of the data of uneven surfaces. The aim of the invention is to disclose a method and a device in the above-mentioned form, which enables contactless scanning of uneven surfaces, especially a relief formed on the strips of the skin, and the production of a high contrast image of the surfaces which is true to the original. According to the invention, the surface is scanned without making contact with optically effective surfaces, wherein said surface is illuminated in a strip-like or grid-type manner and partial images of the objects are produced by light reflected on discrete points, which are selectively evaluated and are combined in order to form an overall picture. The invention relates to a method and an arrangement which detects data on uneven surfaces, especially for the determination of biometric data on faces and fingers, comprising a light source for illuminating the uneven surface, an imaging optical system and an evaluation device for electronic image processing.
L'invention concerne un proc~d~ et un ensemble permettant la d~tection sans contact de donn~es de surfaces rugueuses. L'objectif de cette invention est de fournir un proc~d~ et un dispositif du type susmentionn~ permettant un balayage sans contact de surfaces rugueuses, en particulier d'un relief form~ par des papilles dermiques, et la production d'une image des surfaces conforme ~ l'original avec un contraste ~lev~. A cet effet, la surface est balay~e sans contact en faces ~ effet optique, tandis que cette surface est ~clair~e en grille ou en stries et des segments d'image de l'objet sont produits avec la lumire r~fl~chie en des points distincts, lesquels segments d'image sont ~valu~s de manire s~lective et regroup~s en une image complte. Ladite invention concerne un proc~d~ et un ensemble permettant la d~tection de donn~es de surfaces rugueuses, en particulier la d~termination de donn~es biom~triques faciales et digitales, lequel ensemble comprend une source lumineuse destin~e ~ ~clairer la surface rugueuse, un systme optique de repr~sentation et un systme d'~valuation pour le traitement ~lectronique d'images.
Hauke Rudolf
Merbach Peter-Michael
Nothaft Hans-Peter
Riches Mckenzie & Herbert Llp
Tbs Holding Ag
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