Face Authentication Using Side Profile Features for Twin Distinction
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Solution Overview
Problem
Face recognition technologies face challenges in accurately identifying users who are twins or multiple births due to the similarity in their face features, leading to inaccurate authentication results and potential need for cumbersome alternative authentication methods.
Innovation Solution
An authentication method that acquires both front and side face features of a user and searches for a candidate user with similar front face features but non-similar side face features from a pre-established list of multiple births, determining successful authentication based on consistency between the user's features and the candidate's features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If face recognition technology is used for authentication, then convenience is improved by eliminating manual password input, but authentication accuracy deteriorates for users of multiple births due to similar face features
Solution Approach 1:
The patent transitions from two-dimensional front face recognition to three-dimensional side face feature comparison. By capturing and comparing side face images, the system adds a new dimensional perspective that effectively distinguishes between users of multiple births who have similar front face features, thereby resolving the authentication accuracy problem while maintaining convenience
2Productivity
If only front face features are used for authentication, then the authentication process is simple and fast, but the ability to distinguish between users of multiple births is insufficient
Solution Approach 1:
The patent segments the face recognition process into two distinct parts: front face feature extraction for initial identification and side face feature extraction for verification. This segmentation allows the system to maintain fast processing through specialized algorithms for each part while achieving reliable user distinction through the combination of both features
3Adaptability or versatility
If face features of users of multiple births are used for authentication, then face scan payment can be applied to these users, but accurate identification becomes difficult due to great similarity in their face features
Solution Approach 1:
The patent exploits the asymmetry between front face and side face features. While front faces of users of multiple births are symmetrically similar, their side face features exhibit asymmetry and unique characteristics. By designing the authentication system to capture and compare side face features, the patent achieves accurate differentiation while maintaining broad applicability to users of multiple births
Data Source
AI summary
An authentication method includes: acquiring a front face feature and a side face feature of a first user in response to a face authentication request of the first user; searching, based on the front face feature and the side face feature of the first user, a first list of users of multiple births corresponding to the first user for a candidate user matching both the front face feature and the side face feature of the first user, wherein the first list of users of multiple births corresponding to the first user is a list of users of multiple births with similar front face features and non-similar side face features; and determining, based on consistency between the candidate user and the first user in the front face feature and the side face feature, whether the first user succeeds in authentication.