Fingerprint matching using ridge feature maps

Patent 7142699 Issued on November 28, 2006. Estimated Expiration Date:

December 4, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Siemens Corporate Research, Inc.

Application

No. 10309657 filed on 12/04/2002

US Classes:

382/124, Using a fingerprint382/209, Template matching (e.g., specific devices that determine the best match)340/5.83, Image (Fingerprint, Face)283/69, Identifying356/71, DOCUMENT PATTERN ANALYSIS OR VERIFICATION382/125, Extracting minutia such as ridge endings and bifurcations382/199, Pattern boundary and edge measurements704/243, Creating patterns for matching382/255, Focus measuring or adjusting (e.g., deblurring)359/2, Authentication713/186Biometric acquisition

Examiners

Primary: Mancuso, Joseph
Assistant: Yuan, Kathleen

Attorney, Agent or Firm

International Classes

G06K 9/00
G06K 9/62
G05B 19/00
B42D 15/00

Abstract

A method for matching fingerprint images is provided. The method includes the steps of acquiring a query image of a fingerprint; extracting a minutiae set from the query image; comparing the minutiae set of the query image with a minutiae set of at least one template image to determine transformation parameters to align the query image to the at least one template image and to determine a minutiae matching score; constructing a ridge feature map of the query image; comparing the ridge feature map of the query image to a ridge feature map of the at least one template image to determine a ridge feature matching score; and combining the minutiae matching score with the ridge feature matching score resulting in an overall score, the overall score being compared to a threshold to determine if the query image and the at least one template image match.