基于动态时间规划的在线签名认证方法分析.docx

摘要
摘 要
随着网络技术与通信技术的飞速发展,现代社会对个人身份识别的准确性、安全性与实用性提出了更高的要求。如何准确、快捷、方便地识别个人身份,保护信息安全, 已成为网络环境下的各种应用,尤其是电子商务中亟待解决的关键技术问题。
基于生物特征的身份识别由于克服了传统认证方式的很多缺陷,而得到越来越广泛的应用。手写签名认证是生物特征识别的重要研究领域之一,与其他生物认证方法相比, 它是一种非侵入式的、便于使用而且更容易被人们所接受的认证方式。,分析手写签名认证中应用经典的动态时间规整算法及其在实际应用中存在的局限性,提出了相应的解决方法。并对身份深证技术的应用进行了相关研究。论文的主要内容有:
首先,全面介绍了动态时间规划算法的基本原理和流程,针对该算法应用到签名认证中存在的局限性进行了细致探讨,并分别给出了相关改进方案。
其次,提出了基于字形匹配的动态力信息分类设计方案,解决了签名字形匹配,特征提取和分段等问题。新的动态时间规划算法能够显著增强类间签名的间距,增强认证效果。
然后,提出了基于DTW算法的全新最优化策略以及距离度量方法,并提出了采用包络线技术实现签名的模糊匹配,实验表明这些方法能够有效地克服传统DTW方法应用到签名认证中存在的问题,更为科学地解决认证实际操作中遇到的难题,增加了认证的有效性。
手写签名认证技术最具前景的发展方向是提供可靠的身份确认技术,协助实现无纸化办公。本文针对当前银行无纸化办公中存在的局限性提出了系统解决方案。最后编程实现了在线手写签名认证系统。
关键词: 生物特征识别在线手写签名认证动态时间规整包络线模糊匹配
ABSTRACT
A BSTRACT
With the rapid development work munication technologies,es all urgent and higher requirement on the verification,which should be more veracious,safe and those applications under work environment,especially in merce related field,it has e a key technique problem to decide a person’S identity swiftly,conveniently and accurately.
The biometrics has a significant advantage over traditional authentication techniques and is ing more and more widely signature verification is one of important research areas of pared with other biometric authentication technologies,it is non—intrusive,convenient and more easily accepted by this thesis,we analyzed Dynamic Time Warping(DTW)method that is the classical arithmetic of
online signature at the same time,We discussed the ing of DTW and the countermeasure we advanced。All of this is discussed based on the handwriting information acquired by F-Tablet,which is a digital tablet and can capture the three dimension writing main content ofthe thesis consists of.
Firstly,we present the fundamental and flow of DTW limitation of this arithmetic is discussed particularity when applied in signature verification. Then,some scheme a