Binary image minutiae detector

Details Binary image minutiae detector Binary image minutiae detector

1976-09-10

1978-04-04

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

G06K 912

Patent

active

040830357

ABSTRACT:
An apparatus is described for detecting minutiae in a two-dimensional binary image. In a preferred embodiment a two-dimensional binary data bit stream of an image is enhanced in an enhancement circuit by pore-fill and line-thin operations. The enhanced binary data bit stream is then applied in parallel to first and second detectors which detect minutiae and extract the X, Y and .theta. coordinates of each minutiae detected in the enhanced binary data bit stream.

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patent: 3859633 (1975-01-01), Ho et al.
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Eleccion, "Automatic Fingerprint Identification", IEEE Spectrum, Sept. 1973, vol. 10, pp. 36-45.
Rao et al., "An Automatic Fingerprint Classification System," 2nd Int. Joint Congress on Pattern Rec., Copenhagen, Denmark, Aug., 1974, pp. 180-184.
Kobayashi et al., "Automated Fingerprint Classifier", 2nd Int. Joint Congress on Pattern Rec., Copenhagen, Denmark, Aug. 1974, pp. 185-189.

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