基于Matlab实现的指纹图像预处理算法  

Preprocessing Algorithm of Fingerprint Image Based on Matlab

作　　者：商庆瑞[1] 吴晴[1] 郭晶莹[1] 

机构地区：[1]北京工业大学,北京100022

出　　处：《计算机仿真》2007年第3期215-218,共4页Computer Simulation

摘　　要：指纹图像预处理是指纹识别的前提,它的好坏直接影响到指纹识别的成败,在前人的基础上提出了一套基于Matlab实现的指纹图像预处理算法。文中给出了用Matlab对每个指纹图像处理功能模块的算法实现、改进方法及处理结果,主要包括去边缘背景,块方向图求取,增强和二值化的合并,细化。用Matlab实现的这种方法,既能分步对指纹图像预处理算法进行仿真测试,又可以很直观地看到图像处理算法的效果,有效配合了算法的研究。实验证明,用Matlab实现的算法的处理结果比较理想,满足识别的应用性。Preprocessing algorithm is essential in fingerprint recognition, it is the key in the fingerprint identification. This paper introduces a set of algorithms for preprocessing based on Matlab, gives the improved methods and the processing results of each functional module, mainly including background deletion , block direction computation, enhancing and binary incorporation, thinning. Every part of fingerprint images preprocessing algorithms can be simulated and testd by matlab, and the effect of images processing algorithms can be observed intuitively. The experimental results show that this algorithm by Matlab has ideal processing result, and can meet the requirement of recognition.

关 键 词：指纹识别 预处理 方向图 增强 细化 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]