Threshold Equalization for On-Line Signature Verification
Isao Nakanishi, Hiroyuki Sakamoto, Yohji Itoh, Y. FUKUI · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2008
In on-line signature verification, complexity of signature shape can influence the value of the optimal threshold for individual signatures. Writer-dependent threshold selection has been proposed but it requires forgery data. It is not easy to collect such forgery data in practical applications. Therefore, some threshold equalization method using only genuine data is needed. In this letter, we propose three different threshold equalization methods based on the complexity of signature. Their effectiveness is confirmed in experiments using a multi-matcher DWT on-line signature verification system.