有的指纹细化方法还存在细化不彻底、细化后的纹线不是单像素的问题，要快速高效的做好指纹细化，快速细化：先判断出待细化图像中指纹纹线的边界点，然后逐步将指纹纹线的边界点删除，得到快速细化图像-Refinement method, there are some fingerprints is not completely refined, refined the ridge is not a single pixel of the problem, do a quick and efficient f