Values of time-series data defined in 19794-7 for signature verification
ISSN der Zeitschrift
BIOSIG 2011 – Proceedings of the Biometrics Special Interest Group
Regular Research Papers
Gesellschaft für Informatik e.V.
The signature/sign time-series data format 19794-7:2007 was standardized in ISO/IEC JTC1 SC37 WG3. The format handles various data such as pen tip position (x,y,z), pen tip velocity (vx,vy), pen tip acceleration (ax,ay), pen tip force (f), pen azimuth (a), pen elevation (e) and so on. It is valuable that this data format enables different types of input devices to be used in signature/sign verification. However, there is no comparison of verification performance by these data, and no idea in mixing multiple data for improving verification performance. In this paper, nine kinds of time series data (x, y, vx, vy, ax, ay, f, a, e) calculated from the data acquired by WACOM tablet are used to signature verification for comparing their values by false rejection rate (FRR) and false acceptance rate (FAR) with changing decision threshold. In the verification, non-linear matching is used in making a template and calculating the distance between two signatures. The relationship between FRR and FAR with and without forgery is also given by experimental results of 11 Japanese signatures.