指纹图像的预处理及特征提取，又详细地算法描述，适合于初学者，可以作为本科毕业设计的参考-Fingerprint image preprocessing and feature extraction algorithm described in detail also suitable for beginners can be used as a reference design graduate

指纹的特征提取，老外写的，很实用，希望指纹初学者能够通读！-Fingerprint feature extraction, written by a foreigner, it is useful, I hope to read fingerprints for beginners!

指纹识别图像预处理算法及指纹特征提取系统研究-Fingerprint image preprocessing algorithm and fingerprint feature extraction system research