Automatic reference adaptation during dynamic signature verifica

Details Automatic reference adaptation during dynamic signature verifica Automatic reference adaptation during dynamic signature verifica

1986-01-22

1988-02-09

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 15, G06K 900

Patent

active

047245425

ABSTRACT:
A signature verification method wherein sets of reference signatures are automatically adapted to changing writing styles of a signer of a signature. More specifically, a number of signatures in a set of reference signatures are automatically replaced during a current verification session with signatures from the current verification session. In addition, signatures which would ordinarily be rejected using conventional methods of verification are compared with these new reference signatures which are indicative of current signing characteristics and then possibly accepted as true and valid signatures.

REFERENCES:
Chainer et al, "Algorithm for the Selection of Reference Signatures . . . ", IBM Tech. Disclosure Bulletin, vol. 27, No. 7A, Dec. 1984, p. 4033.
Chainer et al, "Signature Verification Ref. Generation Using Feedback", IBM Tech. Disclosure Bulletin, vol. 27, No. 7B, Dec. 1984, pp. 4582-4583.
IBM Technical Disclosure Bulletin, vol. 21, No. 1, Jun. 1978, Anthony et al.
Conference Proceedings of the 1977 International Conference on Crime Countermeasures, by P. de Bruyne.

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