Image analysis – Applications – Personnel identification
Patent
1997-04-11
2000-08-29
Kelley, Christopher S.
Image analysis
Applications
Personnel identification
382124, 382168, 382170, 382173, 382204, 382266, 382264, 382268, G06K 900
Patent
active
061119784
ABSTRACT:
A computer based image processing system uses an extraction process to include a pressure invariant feature for measuring distances between minutiae. The feature extraction process identifies one or more of the following features of the fingerprint: an orthogonal image contrast, a parallel image contrast, and a feature confidence. A ridge counter process, executing on the computer system, determines the number of ridges (ridge count) running across two given points and further qualifies (invalidates) this count if the confidence value of the pixels in the region adjoining the region is not reliable. The ridge count feature between minutiae is used for determining reliable features when matching fingerprints.
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Bolle Rudolf Maarten
Colville Scott Eric
Pankanti Sharathchandra U.
Chawan Sheela
International Business Machines - Corporation
Kelley Christopher S.
Percello Louis J.
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