Title: Handwriting verification system using landmarks

Abstract: When signals derived from a template signature are to be compared directly with signals derived from a specimen signature, because no two signatures are alike, there is a requirement for providing a certain degree of "rubberiness" between the specimen and template signals. Previously such rubberiness was achieved by breaking the signal up into fixed portions and then conducting translation, stretch and contraction between these fixed portions in the course of the comparison. In this invention, advantage is taken of the existence of prominent landmarks in the template and specimen signatures, and the signatures are broken up between these landmarks for the purpose of achieving rubberiness and/or translation. The landmarks in the signals derived from the signatures to be compared are exactly aligned before the correlation process is undertaken.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Crane, Hewitt David (Portola Valley, CA, US)
Wolf, Daniel Errol (Menlo Park, CA, US)

Application Number: 716344
Filing Date: 1976-08-20
Publication_date: 1978-04-25
Assignee: Stanford Research Institute (Menlo Park, CA)
Primary Class(es): 382/123 382/215
Other Classes:
US Patent Ref:

3699517	Oct, 1972	Dyche	340/146.
3930229	Dec, 1975	Crane et al.	340/146.
3962679	Jun, 1976	Engelbrecht	340/146.
3983535	Sep, 1976	Herbst et al.	340/146.

Other Refs:
Primary Examiner: Thesz, Joseph M.
Assistant Examiner:
Attorney: Lindenberg, Freilich, Hornbaker, Wasserman, Rosen & Fernandez