Face Authentication Apparatus Using Dynamic Reference Storage
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Solution Overview
Problem
Existing authentication systems increase the time required for authentication by performing multiple collations, even though they aim to reduce the probability of authentication failure.
Innovation Solution
The proposed authentication apparatus performs a first authentication by collating a face image with a registered image, and if successful, stores the face image for future use. If the first authentication fails, a second authentication is performed by collating the face image with previously successfully authenticated face information stored in a face information storage unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple registered images are used for each person to reduce authentication failure probability, then the authentication reliability improves, but the number of collation operations increases causing authentication time to increase
Solution Approach 1:
The system performs a first authentication using the registered image before the actual authentication process. This preliminary collation prepares reference information in advance, allowing the main authentication to proceed more efficiently with reduced processing time while maintaining high reliability through the additional verification step.
Solution Approach 2:
The authentication process is divided into two distinct stages: first authentication (collating with registered image) and second authentication (collating with face information from successful authentications). This segmentation allows each stage to serve a specific purpose - the first ensures baseline accuracy while the second provides additional verification only when needed, optimizing both reliability and processing efficiency.
2Measurement precision
If multiple collation operations are performed to reduce authentication failure, then the authentication accuracy improves, but the processing complexity increases
Solution Approach 1:
The system dynamically adjusts the authentication process based on the results of the first authentication. When the first authentication succeeds, the system proceeds with standard processing. When it fails, the system activates the second authentication pathway with face information from successful authentications. This dynamic approach ensures high accuracy while avoiding unnecessary processing complexity in cases where the first authentication is sufficient.
Solution Approach 2:
The registered image serves as an intermediary reference that facilitates the authentication process. By first collating with the registered image and then, if needed, with face information from successful authentications, the system creates a staged verification process that improves accuracy while managing complexity through structured intermediate steps.
Data Source
AI summary
A face image acquisition means acquires a face image of a person to be authenticated. An authentication means performs a first authentication of collating the face image of the person to be authenticated with a registered image of a registrant. When the first authentication has been successful, the authentication means stores the face image of the person to be authenticated in a face information storage unit as face information regarding which authentication of the registrant has been successful. When the first authentication has failed, the authentication means performs a second authentication including collation of the face image of the person to be authenticated with face information regarding which the authentication has been successful and which is stored in the face information storage unit.