基于纹理结构的指纹识别算法  

Algorithm of fingerprint identification based on fingerprint texture structure

作　　者：孟祥萍[1] 武增光[2] 赵玉兰[2] 

机构地区：[1]长春工程学院电气与信息学院,吉林长春130012 [2]东北电力大学信息工程学院,吉林吉林132012

出　　处：《计算机工程与设计》2009年第13期3136-3138,共3页Computer Engineering and Design

基　　金：教育部科学技术研究重点基金项目(208179);长春市科技计划基金项目(06GJ18)

摘　　要：为克服传统细节点匹配模型的不足,对指纹的纹理结构进行了深入分析,利用指纹纹线的不同结构作为指纹图像的特征。分析了Freeman链码描述图像的原理,用Freeman链码导数来表示所提取的指纹纹线。提出了一整套基于指纹纹线轮廓的特征提取和匹配算法,该算法具有平移、旋转不变性。由于利用了指纹的结构信息,对低质量指纹图像有一定的适应度。实验结果表明,该算法具有相当高的识别率和较强的鲁棒性。The texture structure of fingerprint is analyzed to overcome the drawback of traditional minutiae matching model, and the feature of fingerprint image is described by using the different ridge structure. Through studying the principle of image by Freeman chain code and using Freeman chain code derivative to describe the extracted fingerprint ridge. An algorithm of feature extraction and matching based on fingerprint ridge contour is proposed, and this method has the translation and invariance. The algorithm has a certain degree on the fingerprint image result from the structure information of fingerprint. The experimental results show that the proposed algorithm has a high recognition rate and robust.

关 键 词：指纹识别 纹理结构 FREEMAN链码 特征提取 特征匹配 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]