TY - CHAP AU - Kővári, Bence András AU - Charaf, Hassan ED - N, Mastorakis ED - V, Mladenov ED - Z, Bojkovic TI - Statistical Analysis of Signature Features with Respect to Applicability in Off-line Signature Verification T2 - 14th WSEAS International Conference on Computers PB - WSEAS Press CY - Athén SN - 9789604742134 T3 - Latest Trends on Computers, ISSN 1792-4251 PY - 2010 SP - 473 EP - 478 PG - 6 UR - https://m2.mtmt.hu/api/publication/2662219 ID - 2662219 AB - Although the computerized verification of handwritten signatures has been extensively studied in the past three decades, the results on the field are still unsatisfactory. This paper provides a generic analytic approach for modeling different kinds of signature verification systems and estimating their performance limitations based on simple properties of the signature database, which is used to evaluate the system. Although our current approach concentrates only on skilled forgeries, it could be well extended to handle unskilled and random forgeries and thereby provide a model, which is applicable to current commercial signature verification systems. LA - English DB - MTMT ER - TY - JOUR AU - Kővári, Bence András AU - Benedek, Toth AU - Charaf, Hassan TI - Classification approaches in off-line handwritten signature verification JF - WSEAS TRANSACTIONS ON MATHEMATICS J2 - WSEAS TRANS MATH VL - 8 PY - 2009 IS - 9 SP - 500 EP - 509 PG - 10 SN - 1109-2769 UR - https://m2.mtmt.hu/api/publication/2662217 ID - 2662217 AB - Although automatic off-line signature verification has been extensively studied in the last three decades, there are still a huge number of open questions and even the best systems are still struggling to get better error rates than 5%. This paper targets some of the weak spots of the research area, which are comparability, measurability and interoperability of different signature verification systems. After delivering an overview of some of the main research directions, this paper proposes a generic representation of signature verifiers. In the first part of the paper it is shown how existing verification systems compare to the generic model, detailing the differences and their resolutions. In the second part a signature verification framework is introduced, which was created based on the generic model. It is demonstrated how existing algorithms and even an existing signature verifier can be modularized and modified to allow an execution through the framework. Finally the benefits of the model are outlined including the unified benchmarking, comparability of different systems and the support for distributed software architectures like SOA. LA - English DB - MTMT ER -