Signature verification

Details Signature verification Signature verification

1986-02-20

1987-10-20

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 13, 382 21, G06K 946

Patent

active

047019603

ABSTRACT:
Disclosed is a method for determining whether or not two signatures were written by the same individual. An X-Y data tablet indicates the location of the writing instrument at a predetermined clock pulse rate as the signature is written. A number string is generated which indicates the relationship between sequentially determined locations of the writing instrument as it moves to different locations on the X-Y data tablet. The quantity of numbers within the number string is an indication of the distance between sequentially determined locations and the value of the numbers within the number string is an indication of the direction of movement between sequentially determined locations. Series of number strings form a waveform representative of the signature as written by the individual. The waveform of the sample signature is compared with the waveform of a reference signature and an output is provided indicating whether or not the sample signature and the reference signature were made by the same individual.

REFERENCES:
patent: 4513439 (1985-04-01), Gorgone et al.

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