本文以活体指纹录入仪为指纹采集手段，以个人计算机作为处理平

台，综合运用图像处理和模式识别技术，深入、系统地研究了指纹自动

识别的理论和技术，并且详细的探讨了指纹图像预处理过程的实现，提

出了一种改进的指纹图像全局特征点的提取方法。并在此基层上完成了

指纹分类算法，提出并建立了基于全局特征的指纹识别方法-paper to live fingerprint recording instrument for fingerprint acquisition means a personal computer as a processing platform, comprehensive use of image processing and pattern recognition technology, in-depth, systematic study of the Automatic Fingerprint Identification theory and technology, and detailed exploration of the fingerprint image preprocessing the realization of the process, It proposed a fingerprint image of the overall feature points extraction methods. And in this grassroots completed fingerprint classification algorithm, and the establishment based on the overall characteristics of the fingerprint identification method