Patent ID: 7729521
Filing Date: 2010-06-01
Classification: G06K

Abstract:
1. A method of comparing a test fingerprint with a stored reference fingerprint, comprising: producing an image strip sequence of the test fingerprint, by a fingerprint sensor, wherein image strips of the image strip sequence represent different areas of the test fingerprint; producing the reference fingerprint from memory, wherein the reference fingerprint is produced in an image strip sequence, and image strips of the image strip sequence represent different sections of the reference fingerprint; determining individual distance values, using a distance function, between each image strip of the test fingerprint and at least one section of the reference fingerprint; calculating a sum function using the individual distance values to determine an overall distance value, which is a measure of similarity between the test fingerprint and the reference fingerprint; comparing the overall distance value, by a comparator, with a threshold value; and if the overall distance value has a defined relationship with the threshold value, assuming the test fingerprint and the reference fingerprint are identical.