Device and method for classifying biometric authentication data

A biometric authentication data classification device, comprising:

• an information extraction unit configured to extract biometric characteristic information from at least one candidate biometric training data for biometric authentication using an artificial neural network model;
• and
• a processor unit configured to perform a processing of the biometric characteristic information,
• wherein the information extraction unit extracts first biometric characteristic information from the at least one candidate biometric training data to provide the first biometric characteristic information to the processor unit, and
• the processor unit calculates an overall similarity between the first biometric characteristic information and second biometric characteristic information extracted from a performance test database of which a biometric authentication performance is lower than a threshold level, the performance test database being selected among performance test databases for biometric authentication, and adds the at least one candidate biometric training data into one of biometric authentication training database and the performance test database based on the calculated overall similarity, and
• wherein the at least one candidate biometric training data is in plural numbers, and
• when adding the at least one candidate biometric training data, the processor unit uniformly distributes overall similarity values calculated for biometric training data candidate cluster in which a plurality of candidate biometric training data are clustered, and adds the at least one candidate biometric training data into one of the biometric authentication training database and the performance test database based on a predetermined distribution ratio.

A computer readable storage medium configured to store therein a computer program, the computer program comprising a command for a processor to execute a method for adding biometric authentication training data into a database performed by a biometric authentication data classification device,

• wherein the method comprises:
• extracting first biometric characteristic information from at least one candidate biometric training data for biometric authentication using an artificial neural network model;
• calculating an overall similarity between the first biometric characteristic information and second biometric characteristic information extracted from a performance test database of which a biometric authentication performance is lower than a threshold level, the performance test database being selected among performance test databases for the biometric authentication;
• and
• adding the at least one candidate biometric training data into one of the biometric authentication training database and the performance test database based on the calculated overall similarity,
• wherein the at least one biometric data candidate is in plural numbers, and
• the adding of at least one candidate biometric training data includes adding the at least one candidate biometric training data into one of the biometric authentication training database and the performance test database based on a predetermined distribution ratio after uniformly distributing overall similarity values calculated for a biometric training data candidate cluster in which the plurality of candidate biometric training data are clustered.