Fingerprint Registration Method Using Quality-Based Segmentation
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Solution Overview
Problem
Current fingerprint recognition technologies face low recognition rates due to small registered fingerprint areas, requiring multiple recordings from users, especially inexperienced ones, which results in poor quality and high non-match rates.
Innovation Solution
A fingerprint registration method and device that retrieve and match feature information based on preset index types, determining effective fingerprints and signaling successful registration when a preset number of effective templates is reached, guiding users to record entire fingerprint zones and providing feedback for improved quality and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the area of registered fingerprint is reduced to satisfy appearance requirements, then the terminal appearance is improved, but the recognition rate decreases and non-match rate increases
Solution Approach 1:
The patent segments the fingerprint registration process into multiple quality levels (first quality, second quality, third quality) based on different area ratios. This allows the system to capture comprehensive fingerprint data across multiple quality tiers, ensuring high recognition rates even when the visible fingerprint area is small due to terminal appearance constraints.
2Reliability
If multiple fingerprint recordings are required to improve registration quality, then the fingerprint registration quality is improved, but the registration time and user burden increase
Solution Approach 1:
The patent implements a feedback mechanism that provides real-time guidance to users during fingerprint registration. The system monitors the quality of each recorded fingerprint and provides feedback on whether the recording meets quality standards, guiding users to make improvements. This feedback loop enables the system to achieve high registration quality while minimizing the number of retry attempts needed.
Solution Approach 2:
The patent performs preliminary quality assessment and guidance before finalizing the fingerprint registration. By evaluating fingerprint quality in advance and providing guidance on how to improve recordings, the system prevents poor-quality registrations from being finalized, thereby reducing the need for multiple retry cycles and shortening overall registration time.
3Reliability
If inexperienced users are required to record fingerprint multiple times, then the chance of obtaining effective fingerprint increases, but the registration complexity and difficulty increase
Solution Approach 1:
The patent enables inexperienced users to successfully complete fingerprint registration through self-service guidance. The system automatically evaluates the quality of each recording and provides clear, step-by-step feedback that empowers users to improve their own recordings without requiring external assistance. This self-service approach simplifies the process for inexperienced users while maintaining high effective fingerprint acquisition rates.
Data Source
AI summary
A fingerprint registration method, device and terminal thereof are proposed. The method includes: retrieving feature information of a fingerprint recoded every time based on preset index types when registering the fingerprint; matching the feature information based on preset index information corresponding to the index types to determine whether the fingerprint recorded every time is effective; and signaling a successful fingerprint registration if a number of effective fingerprints recorded is monitored to reach a preset number of fingerprint templates.