Modification of Intersession Variability in On-Line Signature Verifier

Modification of Intersession Variability in On-Line Signature Verifier
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在线签名验证器中会话间变异性的修改

DOI:
10.1007/11527923_47
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发表时间:
2005
期刊:
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影响因子:
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通讯作者:
T. Matsumoto
T. Matsumoto
中科院分区:
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文献类型:
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作者:
Yasunori Hongo;D. Muramatsu;T. Matsumoto

文献摘要

被引文献

相似文献

对于笔输入在线签名验证算法,会话间可变性的影响是一个相当大的问题,因为手写签名随着时间的推移而变化,导致性能下降。在我们之前的工作中,我们使用AdaBoost提出了一个用户通用模型。然而,这个模型没有考虑到签名的特征会随着时间的推移而变化。在本文中,我们提出了一种模板更新方法来减少签名随时间变化而引起的性能下降。在我们提出的方法中,如果新的签名数据产生的索引超过阈值,则用新的模板替换旧的模板。不需要再学了。在MCYT数据库的一个子集上进行了初步实验。
For Pen-input on-line signature verification algorithms, the influence of intersession variability is a considerable problem because hand-written signatures change with time, causing performance degradation. In our previous work, we proposed a user-generic model using AdaBoost. However, this model did not allow for the fact that features of signatures change over time. In this paper, we propose a template renewal method to reduce the performance degradation caused by signature changes over time. In our proposed method, the oldest template is replaced with a new one if the new signature data gives rise to an index which exceeds a threshold value. No further learning is necessary. A preliminary experiment was conducted on a subset of the MCYT database.