读取指纹图象、提取特征、保存数据和比对。在一开始，通过指纹读取设备读取到人
体指纹的图象，取到指纹图象之后，要对原始图象进行初步的处理，使之更清晰。接下来，
指纹辨识软件建立指纹的数字表示——特征数据，一种单方向的转换，可以从指纹转换成特
征数据但不能从特征数据转换成为指纹，而两枚不同的指纹不会产生相同的特征数据(Reads the fingerprint image, extracting features, save the data and comparison. In the beginning, read to the people through fingerprint reading device
Fingerprint image, and then take to the fingerprint image, the original image to a preliminary treatment to make it more clear. Next,
Fingerprint recognition software to establish a digital representation of the fingerprint- characteristic data, convert one single direction, can be converted　a special fingerprint
But it can not become a fingerprint feature data　the feature data conversion, and two different fingerprints will not produce the same characteristic data)