The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2015
Filed:
Oct. 19, 2012
Bioid Ag, Sachseln, CH;
Robert Frischholz, Nuremberg, DE;
Peter Strohm, Nuremberg, DE;
BioID AG, Sachseln, CH;
Abstract
A method for discriminating between a real face and a two-dimensional reproduction of the face, in a biometric detection process, the method comprising: (a) making at least two digital recordings of the face or its reproduction in time sequence, one after the other; (b) dividing each of the recordings into a number of image components wherein each image component comprises a number of pixels; (c) determining the displacement of the individual image components from the first recording to the second recording by correlation and generating a displacement vector field therefrom; and (d) analyzing the displacement vector field for determining whether the recording has been made from a real face or from its reproduction.