Systems for the automatic verification of signatures already written on documents have produced results which lead to significant portions of authentic signatures being rejected and false signatures being accepted. Signature verification according to the invention applies dynamic programming techniques to static features extracted from a previously recorded signature. The static features of an unauthenticated signature are compared with the corresponding static features of a set of previously authenticated signatures. A characteristic distance of the unauthenticated signature from the set of authenticated signatures is then derived. The unauthenticated signature is verified by measuring the characteristic distance against a previously set threshold.
展开▼
