The Gabor filter is applied to enhance the quality of fingerprint image. Thus the system is robust to low quality of fingerprint image.
利用Gabor滤波器增强指纹图象，改善指纹图象质量，增强系统抗干扰的能力。
参考来源 - 基于Gabor滤波的自动指纹认证系统研究·2,447,543篇论文数据，部分数据来源于NoteExpress
指纹纹线检出大多是先按指纹方向图增强指纹图象，然后进行图象分割。
Most of the fingerprint detection is first to enhance a fingerprint image referring to the fingerprint orientation, then to segment the fingerprint image.
在方向图和脊线频率的基础上，实现了一种基于脊线方向分析的方法对指纹图象进行二值化；
We also improve on the binarization method of fingerprint images based on the 2nd derivative by the orientation and ridge frequency of the images.
本文提出了一种基于脊线跟踪的指纹细节提取算法，能够直接从灰度指纹图象中有效地抽取出细节点及其相关信息。
In this paper, an initiated approach to automatic minutiae detection is proposed. According to this scheme, the minutiae is directly detected from gray-scale images.
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