Method and a System for Matching Fingerprint Images Obtained From Different Fingerprint Image Capturing Devices

摘要

The present invention describes a method and the system for matching fingerprint images obtained from different fingerprint image capturing devices and implemented in an electronic device. Specifically, the method has steps of identifying minutiae and then identifying core point of the fingerprint images. Thereafter, a line of symmetry is determined and minutiae are identified by matching ridge count, location angle and orientation angle of a first image of the fingerprint images with a second image of the fingerprint images is identified. Thereafter, prominent minutiae from the candidate minutiae having three adjacent minutiae with same local structure are identified. Out of scope minutiae are eliminated by non-linear registration of fingerprint images based on ridge-count and position angle. Thereafter, matching score is generated based on number of candidate minutiae, prominent minutiae and common overlapped minutiae after non-linear registration of the second fingerprint image in comparison with the first fingerprint image for authentication.

主权项

1. A method for matching fingerprint images obtained from different fingerprint image capturing, devices, partially captured images and nonlinear deformed images and implemented in an electronic device, the method comprising steps of:
identifying minutiae of the fingerprint images; identifying a core point of the fingerprint images; determining line of symmetry of the fingerprint images; identifying candidate minutiae with matching ridge count, location angle and orientation angle from a first fingerprint image and a second fingerprint image of the fingerprint images; identifying prominent minutiae from the above identified candidate minutiae having three adjacent minutiae with similar local structure; eliminating out of scope minutiae by non-linear registration of fingerprint images based on ridge-count and position angle; and generating matching score based on number of candidate minutiae, prominent minutiae and common overlapped minutiae after non-linear registration of the second fingerprint image in comparison with the first fingerprint image for authentication.