Personal authentication method and device

摘要

During registration, an iris image taken is frequency-analyzed using a plurality of frequencies f 1 to fn to generate features for the respective frequencies f 1 to fn. During authentication, frequencies f 2 to fn are selected from the frequencies f 1 to fn for use in frequency analysis for authentication. An iris image of a person to be authenticated taken is frequency-analyzed using the selected frequencies f 2 to fn to generate features for the respective frequencies f 2 to fn. The generated features are compared with the features generated for the same frequencies during the registration to perform personal authentication.