指纹图像增强、求方向图、二值化、细化、特征提取、特征匹配等算法 的c语言源程序，还有实例演示，本人千辛万苦才找来的， 提供给大家分享。 -Fingerprint image enhancement, seeking direction map, binarization, thinning, feature extraction, feature matching algorithm c language source code, as well as examples of pre

图像加密的一种算法，DCT变换用于提取图像特征(The algorithm is used to encode picture, and use DCT transform)