CAJ | 학술논문

指纹设备采集到的指纹图像由于不能用统一的参照表示指纹细节点的坐标,因此,同一枚指纹分别在录入和注册时得到的指纹细节点需要对齐.本文采用指纹纹线作为指纹Fuzzy vault对齐的方法,在目标纹线上提取B样条控制点,用这些控制点数据与纹线的距离作为辅助数据来对齐指纹模板.研究分析表明这种方法不会泄露指纹细节点的任何信息.实验结果证明,这种方法具有很好的实时性并能提高指纹Fuzzy vault的配准率.
지문설비채집도적지문도상유우불능용통일적삼조표시지문세절점적좌표,인차,동일매지문분별재록입화주책시득도적지문세절점수요대제.본문채용지문문선작위지문Fuzzy vault대제적방법,재목표문선상제취B양조공제점,용저사공제점수거여문선적거리작위보조수거래대제지문모판.연구분석표명저충방법불회설로지문세절점적임하신식.실험결과증명,저충방법구유흔호적실시성병능제고지문Fuzzy vault적배준솔.
In enrollment and verification stage, fingerprint minutiae captured from fingerprint device must be aligned. This paper adopts fingerprint ridge as alignment method in fuzzy vault. In this algorithm, control points are acquired from the target ridge, these control points and the distance information about the ridge are treated as the helper data in fingerprint vault. We analysised and dis-cussed that these helper data can not leak any information about fingerprint minutiae. Experiment results prove that this algorithm has the good real time effect and can improves the recognition precision.