Fingerprint classification arrangement

Details Fingerprint classification arrangement Fingerprint classification arrangement

1984-05-01

1986-08-19

Kreitman, Stephen A.

Image analysis

Histogram processing

For setting a threshold

382 18, G06K 900

Patent

active

046073841

ABSTRACT:
An arrangement for generating a classification code for a fingerprint having a pattern of ridges, the ridges having a plurality of reference features, which includes overlaying the intersection of a pair of cross-hairs at a first one of the reference features. A line is overlaid from a second one of the reference features to the first reference feature. The cross-hairs are oriented so that the line bisects a quadrant of the cross-hairs. The ridges crossed by predetermined portions of the cross-hairs are counted to generate the classification code.

REFERENCES:
patent: 3419287 (1968-12-01), Rudie
patent: 3560928 (1971-02-01), Berger et al.
patent: 3959884 (1976-06-01), Jordan et al.
patent: 4047154 (1977-09-01), Vitols et al.
patent: 4135147 (1979-01-01), Riganati et al.
patent: 4185270 (1980-01-01), Fischer, II et al.
patent: 4310827 (1982-01-01), Asai

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