Image analysis – Applications – Personnel identification
Patent
1996-12-18
2000-07-18
Couso, Jose L.
Image analysis
Applications
Personnel identification
382116, G06K 900
Patent
active
06091839&
ABSTRACT:
The invention provides a fingerprint characteristic extraction apparatus wherein classification and preselection processing with an augmented degree of accuracy can be achieved without significantly increasing the processing time. The apparatus uses, in addition to characteristic amounts used in ordinary preselection processing, another characteristic amount obtained from a fingerprint image for the preselection processing. The apparatus includes a ridge extraction section for extracting ridges from an inputted fingerprint image, a singular point detection section for detecting singular points from the ridges, a main pattern discrimination section for discriminating a pattern of the inputted fingerprint image, and a singular point characteristic calculation section for detecting characteristic amounts between the singular points. The apparatus further includes a joint line extraction section for extracting a joint line from the inputted fingerprint image, and a joint line characteristic calculation section for calculating joint line singular point characteristic amounts from the joint lines, the ridges and the singular points.
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Couso Jose L.
Dang Duy M.
NEC Corporation
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