Biometric Authentication Device Using Iris and Face Data

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Solution Overview

Problem

Existing authentication technologies face challenges in improving the accuracy of person authentication using images.

Innovation Solution

An authentication device and method that classifies first biometric information, such as iris patterns, and stores second biometric information, like facial features, in corresponding databases. The device specifies the class identifier from the image and performs authentication using the stored biometric information from the identified class.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If iris patterns of right and left eyes are registered and matched separately, then authentication can be performed, but authentication accuracy is insufficient especially for twins or similar individuals

Engineering Contradiction:

Improveauthentication accuracyVSAvoidrecognition error rate

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent combines iris pattern recognition with facial feature recognition into a unified authentication system. By merging multiple biometric identification methods, the system overcomes the limitation of iris-only recognition which fails for twins, achieving higher authentication accuracy and reliability simultaneously

Inventive Principle:

Principle #5Merging (Combining)

2Measurement precision

If multiple databases are used for different biometric classes, then authentication accuracy improves, but device complexity increases

Engineering Contradiction:

Improveauthentication accuracyVSAvoiddatabase structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the authentication database into multiple class-specific databases organized by biometric characteristics. This segmentation allows accurate classification-based authentication while managing complexity through systematic organization of data structures and classification algorithms

Inventive Principle:

Principle #1Segmentation

3Measurement precision

If classification of biometric information is performed, then authentication accuracy for similar individuals improves, but processing time increases

Engineering Contradiction:

Improveauthentication accuracyVSAvoidprocessing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent performs preliminary classification of biometric data during the registration phase, organizing information into predefined categories before authentication is needed. This preliminary action enables faster authentication by eliminating the need for complex real-time classification during the authentication process itself

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250190530A1Authentication device, authentication method, and program

Publication Date: 2025.06.12 NEC CORP

AI summary

An authentication device is connected to a database that corresponds to an identifier of a class of first biometric information subjected to classification. The database stores therein second biometric information of a person of the first biometric information. The authentication device specifies, among the first biometric information and the second biometric information of a person included in one image, the identifier of the class obtained by classification of the first biometric information, and performs authentication using second biometric information of a plurality of persons stored by the database that corresponds to the identifier of the class of the first biometric information and second biometric information included in the image