MFC实现的指纹识别程序： 实现了：指纹的梯度、方向场、分割、均衡、收敛、平滑、增加、二值化、细 化，标记特征功能！-MFC implementation of the fingerprint identification procedures: to achieve: gradient of fingerprint direction field, split, balanced, convergence, smooth, increasing, binarization, thin