Communications: electrical – Digital comparator systems
Patent
1980-04-02
1982-01-12
Boudreau, Leo H.
Communications: electrical
Digital comparator systems
G06K 946
Patent
active
043108270
ABSTRACT:
In addition to positions and directions of feature points of a streaked pattern, such as minutiae of a fingerprint on a background, a plurality of novel counts and a density are automatically extracted for each feature point selected as a reference feature point. The density is determined in connection with adjacent feature points that are present in a predetermined neighborhood of the reference feature point. Each count is decided by the number of streaks or ridges intervening between the reference feature point and a related feature point that is nearest to the reference feature point among the feature points in a predetermined sector of the neighborhood.
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Rao et al., "An Automatic Fingerprint Classification System", 2nd Int. Joint Congress on Pattern Rec., Aug. 1974, pp. 180-184.
Boudreau Leo H.
Nippon Electric Co. Ltd.
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