Signature forgery detection device

Details Signature forgery detection device Signature forgery detection device

1989-05-10

1991-01-15

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 16, G06K 900

Patent

active

049859285

ABSTRACT:
A method and apparatus for handwriting analysis wherein a signature or other writing can be subjected to comparison with a reference signature. The apparatus and method rely on the collection of measurements of the optical density of a plurality of elements in the specimen and selectively retaining said measurements and then comparing each density measurement to a threshold value. Ultimately, only those density measurements are retained which are located within a bounded locus. After the retained density measurements have been established, they are automatically compared to the measurements of the specimen signature to permit the apparatus to accept or reject the signature on the presented document.

REFERENCES:
patent: 3480911 (1969-11-01), Danna
patent: 3563097 (1971-02-01), Roggenstein et al.
patent: 3618019 (1971-11-01), Nemirovsky et al.
patent: 3621720 (1971-11-01), Clark
patent: 3699517 (1972-10-01), Dyche
patent: 3818443 (1974-06-01), Radcliffe, Jr.
patent: 3959769 (1976-05-01), Sternberg et al.
patent: 4008457 (1977-02-01), Radcliffe, Jr.
patent: 4028674 (1977-06-01), Chuang
patent: 4035769 (1977-07-01), Sternberg et al.
patent: 4086567 (1978-04-01), Crane et al.
patent: 4128829 (1978-12-01), Herbst et al.
patent: 4143357 (1979-03-01), Baver et al.
patent: 4286255 (1981-08-01), Siy
patent: 4308522 (1981-12-01), Paganini et al.
patent: 4344135 (1982-08-01), Crane et al.
patent: 4433436 (1984-02-01), Carnes
patent: 4475235 (1984-10-01), Graham
patent: 4495644 (1985-01-01), Parks et al.
patent: 4553258 (1985-11-01), Chainer et al.
patent: 4553259 (1985-11-01), Chainer et al.
patent: 4562592 (1985-12-01), Chainer et al.
patent: 4581482 (1986-04-01), Rothfjell
patent: 4646351 (1987-02-01), Asbo et al.
patent: 4653107 (1987-03-01), Shojima et al.
patent: 4680801 (1987-07-01), Etherington et al.
patent: 4736445 (1988-04-01), Gundersen
patent: 4752965 (1988-01-01), Dunicley et al.
patent: 4827527 (1989-05-01), Morita et al.

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