Data base constructing method for performing biometric verification relative to one person, involves determining and storing complementary data from digital data in negative data base

摘要

The method involves obtaining digital vectors derived from biometric data e.g. digital print of fingers, relative to persons. A number of projection functions identified by digital identifiers is applied to each vector to obtain projections of same size as the vector. The digital data relative to the combination of certain number of projections among the obtained projections and the digital identifiers identifying the certain number of projections are calculated. The complementary data from the digital data is determined and stored in a negative data base (10). Independent claims are also included for the following: (1) a device for constructing a data base relative to persons enrolled to biometric verification (2) a method for performing biometric verification relative to the person (3) a device for performing biometric verification relative to the person.