根据指纹的固有规律，提出了一套较完整的指纹图像预处理和特征提取算法。改进了指纹脊线频率求取算法和二值图像去孔噪声

算法，并提出了一种新的滤除指纹伪特征点的方法。通过对上百幅不同质量的指纹图像进行测试，获得了较好的效果。

关键词：指纹；预处理；特征提取-According to the inherent laws of fingerprints, a set of more complete fingerprint image pre-processing and feature extraction algorithm. To improve the frequency of the fingerprint ridge strike algorithms and binary image noise algorithm to hole, and filter out a new fingerprint method of pseudo-feature points. Increase by hundreds of different fingerprint image quality testing, to obtain good results. Key words: fingerprint　pretreatment　Feature Extraction