结合方向图的指纹特征点提取

报告了指纹识别研究的现状,分析了指纹识别过程中伪特征点对识别结果的影响,以及指纹识别过程中不同伪特征产生的原因.对指纹图像进行二值化,细化等预处理,并初步提取特征点.结合指纹方向图,对从细化图像中提取出的大量特征点进行处理,利用不同伪特征的不同方向和距离特点设计了伪特征点判断和删除的判据,在去除伪特征点的同时又保证真正的特征点不被误删.实验结果表明,该方法取得了较好的效果,能满足实际使用的需要.

Fingerprint minutiae extraction algorithm combining with directional image

The present condition is reported.The affection that the false minutiae affect the result of recognition is analyzed.And the reason why different false minutiae arise is analyzed.The fingerprint image is preprocessed with binarization and thinning,and preliminary extract minutiae.The mass of minutiae extracted from thinning image is processed with the fingerprint directional image.The false mi-nutiae is eliminated while retain the real minutiae.The experiment shows that the method works out a quite good eff...