Fingerprint Image Segmentation for Accurate Personal Authentication
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Solution Overview
Problem
Existing personal authentication methods using passwords and biometrics, such as fingerprint authentication, face security challenges in maintaining accuracy and convenience due to issues like unauthorized access and segmentation errors in fingerprint images.
Innovation Solution
A personal authentication system and device that segments fingerprint images into multiple segments based on defined segmentation patterns, avoiding feature point overlap, and registers these segments for improved accuracy and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fingerprint image is segmented into multiple segments for registration, then security is improved and unauthorized access is reduced, but segmentation errors occur causing duplication and omission of feature points reducing authentication accuracy
Solution Approach 1:
The patent applies segmentation by dividing the fingerprint image into multiple non-overlapping regions based on feature point positions. The control device identifies feature points in the acquired fingerprint image and creates segmentation patterns that ensure feature points are contained within specific segments without being duplicated or omitted, thus maintaining authentication accuracy while enabling secure multi-segment registration
Solution Approach 2:
The patent implements preliminary action by pre-defining segmentation patterns before authentication occurs. The system stores multiple segmentation patterns in advance, each corresponding to different feature point configurations, and selects the appropriate pattern based on the acquired fingerprint image. This preliminary preparation prevents segmentation errors during actual authentication while maintaining both security and accuracy
2Reliability
If multiple authentication methods are combined to reinforce security, then security level is improved, but user convenience deteriorates due to increased authentication steps
Solution Approach 1:
The patent merges fingerprint segmentation registration with existing authentication workflows. The control device integrates the segmentation process into the normal fingerprint capture routine, so users provide their fingerprint once and the system automatically performs segmentation and registration without requiring users to complete separate authentication steps, thus maintaining convenience while enhancing security
Solution Approach 2:
The patent implements multi-functionality by designing the fingerprint sensor and control device to serve multiple purposes: they can perform both traditional whole-image fingerprint authentication and the new segmented fingerprint registration/authentication. This universal approach allows the system to reinforce security through segmentation while maintaining compatibility with existing single-step authentication methods, preserving user convenience
Data Source
AI summary
According to an aspect, a personal authentication system is configured to execute fingerprint authentication processing by collating a first fingerprint image registered at fingerprint registration with a second fingerprint image acquired at personal authentication. The personal authentication system includes: a detection device configured to detect a touch position on a sensor and fingerprint data; and a control device configured to generate the first fingerprint image based on fingerprint data acquired at the fingerprint registration, segment the first fingerprint image into a plurality of first segmented images, and register the first segmented images.