Abstract: A method of matching a reference fingerprint image and an input fingerprint image, represented by a first set of minutiae and a second set of minutiae, including: determining a first local neighborhood for each minutia including at least one minutia neighboring the minutia, comparing the first local neighborhoods in the first set with the first local neighborhoods in the second set to determine matched minutiae, filtering the matched minutiae based on a difference between their positions, determining a second local neighborhood for each unmatched minutia including at least one matched minutia neighboring the unmatched minutia, comparing the second local neighborhoods in the first set with the second local neighborhoods in the second set to determine further matched minutiae, filtering the matched minutiae and the further matched minutiae based on a difference between their positions, and determining whether the first and second fingerprint images are the same.

Abstract: A method of enrolling a fingerprint using a narrow-width fingerprint scanner is described. The method may include the steps of receiving first, second, and third fingerprint image strips, respectively representing overlapping portion of the fingerprint, extracting minutiae from each of the fingerprint image strips, matching the extracted minutiae to determine relative positions of the fingerprint image strips, combining the extracted minutiae based on their relative positions to produce a combined set of minutiae representing a larger portion of the fingerprint, and determining that the fingerprint has been successfully enrolled if a width of the larger portion is greater than a predetermined minimum width, or, if not, requesting further fingerprint image strips until the width of the larger portion of the fingerprint is greater than the predetermined minimum width.

Abstract: A method of enrolling a fingerprint using a narrow-width fingerprint scanner is described. The method may include the steps of receiving first, second, and third fingerprint image strips, respectively representing overlapping portion of the fingerprint, extracting minutiae from each of the fingerprint image strips, matching the extracted minutiae to determine relative positions of the fingerprint image strips, combining the extracted minutiae based on their relative positions to produce a combined set of minutiae representing a larger portion of the fingerprint, and determining that the fingerprint has been successfully enrolled if a width of the larger portion is greater than a predetermined minimum width, or, if not, requesting further fingerprint image strips until the width of the larger portion of the fingerprint is greater than the predetermined minimum width.

Abstract: A method of matching a reference fingerprint image and an input fingerprint image, represented by a first set of minutiae and a second set of minutiae, including: determining a first local neighbourhood for each minutia including at least one minutia neighbouring the minutia, comparing the first local neighbourhoods in the first set with the first local neighbourhoods in the second set to determine matched minutiae, filtering the matched minutiae based on a difference between their positions, determining a second local neighbourhood for each unmatched minutia including at least one matched minutia neighbouring the unmatched minutia, comparing the second local neighbourhoods in the first set with the second local neighbourhoods in the second set to determine further matched minutiae, filtering the matched minutiae and the further matched minutiae based on a difference between their positions, and determining whether the first and second fingerprint images are the same.