Fingerprint information extraction by twin tracker border line a

Image analysis – Applications – Personnel identification

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382124, G06K 900

Patent

active

054209374

ABSTRACT:
A method for minutia extraction from a digitized fingerprint array by twin tracker border line analysis includes scanning the array to detect ridge pixels, setting up a pair of tracker pixels or trackers on opposite borders of the ridge, moving the trackers along the borders of the ridge, periodically calculating the midpoint between the trackers to generate a centerline between the borders, calculating an average slope of the centerline, and periodically testing between the trackers for the presence of valley pixels. When such a valley pixel is detected, a sequence of aberration tests is conducted to identify the type of aberration. If the aberration tests all fail, the aberration is identified as a ridge diversion, the location and slope of which are stored as a minutia in a minutia location table. Ridge endings are detected by comparing the coordinates of the trackers after each move. If a ridge ending is detected, an attempt is made to jump to another ridge within a given proximity to the current ridge. When all the ridges have been processed, the valleys of the fingerprint are processed in a similar manner to locate valley minutiae, the locations and slopes of which are stored in the minutia location table associated with the fingerprint.

REFERENCES:
patent: 3558864 (1971-01-01), French
patent: 3699519 (1972-10-01), Campbell
patent: 3893080 (1975-07-01), Ho et al.
patent: 4015240 (1977-03-01), Swonger et al.
patent: 4156230 (1979-05-01), Rigarati et al.
patent: 4210899 (1980-07-01), Swonger et al.
patent: 4310827 (1982-01-01), Asai
patent: 4696046 (1987-09-01), Schiller
patent: 4747147 (1988-05-01), Sparrow
patent: 4790564 (1988-12-01), Larcher et al.
patent: 4817183 (1989-03-01), Sparrow
patent: 4896363 (1990-01-01), Taylor et al.
patent: 4944021 (1990-07-01), Hoshino et al.
patent: 4947442 (1990-08-01), Tanaka et al.
patent: 4948443 (1990-08-01), Costello
patent: 5040223 (1991-08-01), Kamiya et al.
patent: 5040224 (1991-08-01), Hara
patent: 5067162 (1991-11-01), Driscoll, Jr. et al.
patent: 5105467 (1992-04-01), Kim et al.
patent: 5109428 (1992-04-01), Igaki et al.
patent: 5187747 (1993-02-01), Capello et al.
patent: 5239590 (1993-08-01), Yamamoto

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