Fingerprint Template Input Method Using Dynamic Condition Checking
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Solution Overview
Problem
The existing fingerprint template input methods require a fixed number of repeated inputs, leading to inefficiency due to the need for multiple fingerprint images of the same region, resulting in a higher number of inputs than necessary.
Innovation Solution
A method and device that acquire fingerprint images, generate a candidate fingerprint template, and check if it meets preset conditions regarding coverage area and feature points, allowing the template to be input only when these conditions are met, thereby reducing the number of necessary inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed number of fingerprint images are repeatedly input to improve template quality, then the fingerprint template quality is improved, but the number of inputs required becomes much greater than practically necessary
Solution Approach 1:
The system provides real-time feedback to the user by displaying the captured fingerprint image and showing whether it meets the preset conditions (coverage area and feature points). This feedback mechanism allows the system to accept or reject each input dynamically, eliminating the need for a fixed number of repeated inputs while ensuring template quality.
Solution Approach 2:
The patent changes the approach from a fixed-number-of-inputs parameter to a condition-based acceptance parameter. Instead of requiring a predetermined number of inputs, the system evaluates each input against dynamic parameters (coverage area threshold and feature points threshold), allowing flexible acceptance of sufficient inputs without over-collection.
2Manufacturing precision
If multiple fingerprint images are spliced into a template by fixed-number-of-inputs method, then the template quality is improved by repeatedly inputting the same region, but the input process becomes time-consuming
Solution Approach 1:
The system performs preliminary evaluation of each fingerprint image immediately upon capture, checking whether it meets the preset conditions before proceeding. This preliminary action prevents unnecessary repeated inputs and allows the process to terminate as soon as sufficient quality is achieved, reducing time loss while maintaining accuracy.
Solution Approach 2:
The patent introduces dynamic condition checking where the system adapts to each captured image's quality. Instead of a static fixed-number approach, the system dynamically determines whether to continue based on real-time evaluation of coverage area and feature points, optimizing the balance between accuracy and time efficiency.
Data Source
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AI summary
The embodiments of the present disclosure disclose a fingerprint template input method and device, and belongs to the field of fingerprint identification. The fingerprint template input method includes: an ith fingerprint image captured by a fingerprint identification sensor are acquired, i being a positive integer; a candidate fingerprint template is obtained according to all of the acquired i fingerprint images; it is detected whether the candidate fingerprint template meets a preset condition or not; and if the candidate fingerprint template meets the preset condition, the candidate fingerprint template is input as a fingerprint template of the user's fingerprint.