METHOD FOR DETERMINING A MATCH BETWEEN A CANDIDATE FINGERPRINT AND A REFERENCE FINGERPRINT

摘要

The present invention relates to a method for determining a match between a candidate fingerprint and a reference fingerprint characterized by minutiae local features comprising : - extracting (S1) several minutiae from the candidate fingerprint, - computing (S2) from said extracted minutiae a plurality of minutiae local features of the candidate fingerprint, - for at least one local feature pair, called current local feature pair, among a plurality of local feature pairs comprising each a candidate fingerprint local feature and a reference fingerprint local feature: - computing (S3) a first similarity score evaluating the similarity of the candidate fingerprint local feature and the reference fingerprint local feature of the current local feature pair, and storing (S4) said computed first similarity score, - determining (S5) a match between the candidate fingerprint local feature and the reference fingerprint local feature of the current local feature pair based on said computed first similarity score, - computing (S6) a first global matching score between the candidate fingerprint and the reference fingerprint based on the first similarity scores of said matching local feature pairs; - for each matching local feature pair, computing (S7) a second similarity score evaluating the similarity of the candidate fingerprint local feature and the reference fingerprint local feature of the matching local feature pair, - computing (S8) a second global matching score between the candidate fingerprint and the reference fingerprint based on said computed second similarity scores, - determining a match (S9) between the candidate fingerprint and the reference fingerprint comprising: comparing the first and second global matching scores and, comparing the first matching score to a matching threshold.