计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (13): 188-190.DOI: 10.3778/j.issn.1002-8331.2009.13.055

• 图形、图像、模式识别 • 上一篇    下一篇

改进VDDTW的在线手写签名认证算法

栾方军1,2,李 开1,马驷良2   

  1. 1.沈阳建筑大学 信息与控制工程学院,沈阳 110168
    2.吉林大学 数学研究所,长春 130012
  • 收稿日期:2008-03-10 修回日期:2008-05-16 出版日期:2009-05-01 发布日期:2009-05-01
  • 通讯作者: 栾方军

On-line handwritten signature verification algorithm based on VDDTW

LUAN Fang-jun1,2,LI Kai1,MA Si-liang2   

  1. 1.Faculty of Information & Control Engineering,Shenyang Jianzhu University,Shenyang 110168,China
    2.Institute of Mathematics,Jilin University,Changchun 130012,China
  • Received:2008-03-10 Revised:2008-05-16 Online:2009-05-01 Published:2009-05-01
  • Contact: LUAN Fang-jun

摘要: 在线手写签名认证是一种基于生物特征的身份认证技术。将VDDTW算法应用于在线手写签名认证,该算法改进了DTW中局部匹配距离的计算方法,考虑了时间序列局部曲线的变化趋势,使得时间序列的局部点到点的对正更加合理。在采用有训练的伪造样本的情况下,对累积匹配距离进行时间加权,加大了真伪签名的区分度。实验结果表明了VDDTW算法用于在线签名认证的有效性。

Abstract: On-line handwritten signature verification is one kind of biometric identity recognition technology.In this thesis,an on-line handwritten signature verification algorithm using VDDTW is presented.The distance measure of DTW is modified based on VDDTW.The local curve changes among time series elements are considered in order to prevent mistakes,which are produced by using DTW.The result of experiment proves that this algorithm obtains a good verification effect when skilled forgeries are used.