基于指纹采集仪kitk1201的指纹预处理方法  

Fingerprint Preprocessing Algorithm Based on the Fingerprint Scanner of Kitk 1201

作　　者：黄梦涛[1] 罗长军[1] 

机构地区：[1]西安科技大学电气与控制工程学院,西安710054

出　　处：《计算机测量与控制》2013年第11期3131-3133,共3页Computer Measurement &Control

基　　金：陕西省教育厅科研计划项目(11JK0984)

摘　　要：对指纹预处过程进行系统研究,针对一般指纹预处理算法对指纹采集仪kitk1201采集的指纹处理效果差的问题,提出一种改进的预处理方法;该方法分别采用灰度阈值法和高低帽变换二值法对指纹图像进行分割,将其结果图像再叠加进行后续的处理,避免了指纹特征信息的丢失;实验结果表明,改进的预处理方法处理效果好,使得指纹纹线变得清晰、连续、光滑,改善了指纹图像的质量,为指纹的特征提取和识别提供可靠的基础。The whole process of fingerprint preprocessing was analyzed, for the bad processing effects of fingerprint scanner kitk1201 with general fingerprint preprocessing algorithm , an improved pretreatment method is proposed. The grayscale threshold method and top hat and bottomhat converted binarization method were used for fingerprint image segmentation in the method, then the result is superim posed and used in subsequent processing, which avoids the loss of fingerprint feature information. The experiments show that the improved pretreatment method has the advantages of good processing effect and makes fingerprint ridge clear, continuous, smooth. It can improve the quality of the fingerprint image, which provides a reliable foundation for the feature extraction and fingerprint identification.

关 键 词：指纹 预处理 分割 增强 二值化 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]