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一种新的指纹匹配方法

DOI: 10.11834/jig.20030272

Keywords: 计算机图象处理,指纹匹配,纹线匹配,纹线离散采样,基准特征点

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Abstract:

针对基于点模式匹配的指纹匹配算法速度较慢的现状,设计了一种新的指纹匹配方法,即利用纹线匹配技术来寻找基准点对的指纹匹配算法.该算法首先基于指纹纹线的相似程度寻找一对基准特征点;然后根据基准点对的坐标,计算两幅指纹图象(模板图象、待识图象)的相对平移和旋转参数,并将待识图象相对于模板图象进行图象姿势纠正;最后使用坐标匹配的方法统计两幅图象能够匹配的特征点数目.以实现两枚指纹的匹配.实验证明.该算法匹配速度很快,误识率低,准确性高,并具有图象旋转平移不变性.对面积适中的指纹图象,匹配结果可以满足在线应用的需要.该算法有望发展成为一种实用、有效的指纹匹配技术.

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