Patent ID: 9483681
Filing Date: 2016-11-01
CPC Classification: G06K

Claim Text:
1. A method executed by a computer system to identify a fingerprint of a finger of a user, comprising: capturing, by the computer system, a plurality of 2D images of the fingerprint of the finger of the user; reconstructing, by the computer system, a 3D surface model of the finger from the 2D images; preprocessing, by the computer system, the 3D surface model through a median filter; extracting, by the computer system, a plurality of 3D minutiae from the 3D surface model; computing, by the computer system, a difference between a 3D minutia of the finger and a template minutia based on heights, locations, and angles by: where Δr is a difference between the radial distance of the 3D minutia of the finger and the radial distance of the template minutia, ΔA determining, by the computer system, whether the 3D minutia of the finger matches the template minutia; generating, by the computer system, a matching score based on a number of matched minutiae pairs; and establishing, by the computer system and based on the matching score, an identity of the user.