指纹图像预处理算法研究  

Research on algorithms for fingerprint image preprocessing

作　　者：赵金辉[1] 硕良勋[1] 曲文斌[1] 

机构地区：[1]石家庄经济学院网络安全实验室,河北石家庄050031

出　　处：《计算机工程与设计》2006年第15期2777-2778,2811,共3页Computer Engineering and Design

基　　金：石家庄经济学院基金项目(G200510)

摘　　要：在对现有指纹图像预处理算法进行大量分析和实验的基础上,提出了一套高质量的指纹图像预处理算法。利用基于傅立叶变换的频域处理方法对指纹图像进行增强和去噪;在二值化过程中采用动态阈值法,并充分考虑了像素的周边信息;在细化后进行了去伪操作。整套算法充分考虑了指纹图像本身固有特征,把全局特性与局部细节统筹安排。实验表明这是一套简单易行、高效的算法,可以很好的提高指纹图像的质量,为后继处理打下良好基础。Based on a lot of experimentation and the analysis of arithmetic in existence, a set of algorithms for fingerprint image preprocessing is presented. Fingerprint image is enhanced and removed noise by using Fourier transforms; taking into account the edge information ofpixel, dynamic threshold method is adopted during the course of binarization; the false information is eliminated after thinning. This method takes into account proper characteristic enough and plan global identity and detail as a whole. Experiment prove that this method is very effective and simple, which can improve the quality of fingerprint image and make the base for sequence-processing.

关 键 词：指纹识别 预处理 傅立叶变换 增强 去噪 细化 

分 类 号：TN911.73[电子电信—通信与信息系统]