细节点指纹特征提取、匹配方法研究

A Method of Minutiae Fingerprint Feature Extraction and Matching

针对传统指纹细节点提取和匹配方法在处理低质量图像时的不足,提出改进方法。利用脊线跟踪去除伪细节特征点,对细节点特征进行位置和方向信息分析,建立配对关系,计算相似度,进而得到匹配结果。通过此方法,可有效地获取具有辨识度的指纹特征信息,避免了大量的伪特征信息,增强了指纹细节点匹配的正确率和效率,具有较高的识别率和较强的鲁棒性。

Aiming at the shortcomings of traditional fingerprint minutiae extraction and matching methods in processing low-quality images,an improved method is proposed.Ridge tracking is used to remove false minutiae features,and the location and direction information of the minutiae features are analyzed to establish a pairing relationship to calculate the similarity,and then the matching results are obtained.Experimental results show that the method can effectively obtain fingerprint feature information with recognition degree,avoid a large amount of false feature information,increase the accuracy and efficiency of fingerprint minutiae matching,and has a fairly high recognition rate and strong robustness.