Patent ID: 8325992
Filing Date: 2012-12-04
Classification: G06F,G06K

Abstract:
1. An authentication method, comprising: determining values establishing a first ranking of a plurality of reference images based on similarities between the reference images, the first ranking values being associated with corresponding ones of the reference images; determining values establishing a second ranking of the plurality of reference images based on at least the first ranking values, the second ranking values being associated with corresponding ones of the reference images, and the second ranking values being indicative of similarities between the corresponding references images and a comparison image associated with a registrant; identifying at least one of the reference images having a second ranking value that exceeds a threshold ranking value; and authenticating the registrant based on a correlation between the comparison image and the identified reference image, the authentication of the registrant failing when a value indicative of the correlation value between the comparison image and the identified reference image fails to exceed a threshold correlation value.