此代码可以进行指纹识别，包括预处理，特征提取，分类识别,this code can fingerprint identification, including preprocessing, feature extraction, classification, etc.

本文用matlab实现了指纹图像的对比度增强、有效区域的选取、指纹图像的二值化、指纹的特征值提取等。并选取较好的处理步骤和算法参数解决指纹图像预处理的问题。-Using matlab fingerprint image contrast enhancement, selection of effective regional, the binarization of fingerprint images, fingerprint eigenvalue extraction. And select