Method of compensating for distortion caused by fingerprint...

Details Method of compensating for distortion caused by fingerprint... Method of compensating for distortion caused by fingerprint...

2006-12-14

2010-12-21

Lu, Tom Y (Department: 2624)

Image analysis

Applications

Personnel identification

C382S115000

Reexamination Certificate

active

07856128

ABSTRACT:
A method of correcting distortion caused by fingerprint input sensors of heterogeneous fingerprint recognition systems. The method includes a first step of fabricating a measurement pattern for measuring resolutions of a fingerprint input sensor, a second step of measuring image resolutions of an image, acquired by the fingerprint input sensor, using the fabricated measurement pattern for predetermined locations and directions, a third step of designing control lines for compensating for the distortion caused by the fingerprint input sensor, based on the measured resolutions, a fourth step of obtaining average horizontal and vertical resolutions of the acquired image, a fifth step of modeling the control lines based on a ratio of the average horizontal resolution to the vertical average resolution, and a sixth step of compensating for the distortion of the acquired image based on results of the modeling.

REFERENCES:
patent: 4944021 (1990-07-01), Hoshino et al.
patent: 6266433 (2001-07-01), Bolle et al.
Ross et al. (“Biometric Sensor Interoperability: A case study in fingerprints”, LNCS vol. 3087, pp. 134-145, 2004).
“A Fingerprint Verification System Based on Triangular Mathcing and Dynamic Time Warping”, by Miklos et al., published by IEEE Transactions on Pattern Analaysis and Machine Intelligence, vol. 22, No. 11, Nov. 2000., pp. 1266-1276.
A Cross-Matching System for Various Types of Fingerprint Readers, BioAPI Specification, Version 1.1, Mar. 16, 2001.

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