Method and apparatus for dynamic signature verification

Details Method and apparatus for dynamic signature verification Method and apparatus for dynamic signature verification

1985-10-04

1987-02-24

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

178 19, 382 13, 382 21, 382 59, G06K 900

Patent

active

046463518

ABSTRACT:
The subject invention relates to a new and improved method of dynamic signature verification. In accordance with the subject invention output signals, generated by a stylus, are normalized such that they are insensitive to the rotational position of the stylus with respect to the writer's grip. In operation, pressure measurements are sampled at discrete intervals and a normalization angle is calculated, representative of the average direction of the signature. Each sample is then assigned a vector length which is rotated by the normalization angle. The normalized samples are utilized to perform signature analysis.

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