Person identification apparatus

Details Person identification apparatus Person identification apparatus

1991-10-07

1993-08-31

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

356 71, 356376, G06K 900, G01B 1124

Patent

active

052416062

ABSTRACT:
An apparatus and a method for identifying a person by making use of his fingerprint. The uneven fingerprint surface of a finger is scanned by a laser beam through a transparent plate. The distance between positions of the surface of the transparent plate serving as a reference surface of reflection and of the uneven surface of the fingerprint is detected as a deviation value due to the scanning. Pattern information obtained from the deviation value is indicative of undulation of the uneven surface of the fingerprint. The pattern information is collated with registered fingerprint data so as to determine whether or not the person whose fingerprint has been detected is registered or not.

REFERENCES:
patent: 4003656 (1977-01-01), Leventhal
patent: 4900940 (1990-02-01), Nakamura

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