Pattern recognition apparatus

Details Pattern recognition apparatus Pattern recognition apparatus

1975-02-12

1977-03-29

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

G06K 912

Patent

active

040152405

ABSTRACT:
A pattern recognition apparatus for recognizing or identifying fingerprint images and the like is described. The apparatus enables the determination of the coordinates and angular positions of characteritic points such as fingerprint minutiae. The pattern recognition apparatus includes a high resolution scanner for scanning a fingerprint impression or image, an analog to digital converter to convert the scanner signals to a digitally encoded image having many levels of gray scale data, an image enhancer to eliminate imperfections in the imagery, pre-editing circuits to edit out areas of the image which should not be further processed, a minutiae detection system having high redundancy to reduce the probability of missed minutiae, and a post-editing subsystem to eliminate false minutiae detections.

REFERENCES:
patent: 3196398 (1965-07-01), Baskin
patent: 3582889 (1971-06-01), Bodez
patent: 3613080 (1971-10-01), Angeloni et al.
patent: 3723970 (1973-03-01), Stoller
patent: 3737855 (1973-06-01), Cutaia
patent: 3761876 (1973-09-01), Flaherty et al.

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