MINUTIAE-BASED FUSION MATCHER AND FINGERPRINT AUTHENTICATION SYSTEM

摘要

The present invention discloses a fingerprint authentication system and a novel matching method. The authentication system provided herein is interoperable and incorporates a versatile matcher which uses either the topological relationship or spatial relationship or a fusion of both to match the enrolled and the query templates for a robust system. Matching based on topological relationship is achieved using the triangulation method. The matcher is invariant to large rotations, translations and non-linear distortions. In case of a fusion matcher, the decision of topology-based matcher is further confirmed by spatial relationship based matcher (Proximity matcher).The Proximity matcher has a provision for capturing multiple enrollment imprints of fingers, the multiple minutiae sets are then combined to form a union-template. The union-template increases the fingerprint coverage area to effectively handle low quality impressions. The said arrangements lead to a highly customizable and performant system for civil and criminal applications.