A Delaunay Quadrangle-Based Fingerprint Authentication System With Template Protection Using Topology Code for Local Registration and Security Enhancement

摘要: Although some nice properties of the Delaunay triangle-based structure have been exploited in many fingerprint authentication systems and satisfactory outcomes reported, most these operate without template protection. In addition, feature sets similarity measures utilized are not suitable for existing protection techniques. Moreover, local structural change caused by nonlinear distortion is often considered adequately systems. this paper, we propose a quadrangle-based system to deal with distortion-induced that suffers. Fixed-length alignment-free vectors extracted from quadrangles less sensitive more discriminative than those triangles can be applied directly. Furthermore, construct unique topology code each quadrangle. Not only help carry out accurate registration under distortion, but it also enhances security data. Experimental results on public databases analysis show achieve better performance higher level system, code, other similar