Fingerprint Background Calibration From Multi-Frame Image Capture
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Solution Overview
Problem
The assembly of under-screen optical fingerprint modules in electronic devices requires costly and time-consuming professional detection apparatuses and environments, leading to low efficiency.
Innovation Solution
A method and apparatus for obtaining fingerprint background data by updating initial data based on multiple frames of fingerprint images, eliminating the need for specialized detection equipment during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If professional detection apparatus and detection environment are used to determine fingerprint background data during assembly, then measurement precision is improved, but device complexity and loss of time increase
Solution Approach 1:
The patent uses the fingerprint module itself to capture images during normal operation, creating a copy of the detection function that eliminates the need for separate professional detection apparatus. The fingerprint module captures multiple frames of images that are then processed to extract background data, effectively copying the detection capability into the operational system.
Solution Approach 2:
The fingerprint module performs self-testing by capturing multiple frames of images during normal operation and processing them to determine its own background data. This self-service approach eliminates the need for external detection apparatus and specialized environments, allowing the module to calibrate itself using its operational data.
2Measurement precision
If professional detection apparatus and detection environment are used to determine fingerprint background data during assembly, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary background data determination during the normal operation phase when the fingerprint module is first used. By capturing multiple frames of images during initial operation and processing them to establish background data, the system prepares the necessary calibration information in advance, eliminating the need for separate post-assembly detection procedures.
Solution Approach 2:
The patent uses the fingerprint module itself to capture images during normal operation, creating a copy of the detection function that eliminates the need for separate professional detection apparatus. The fingerprint module captures multiple frames of images that are then processed to extract background data, effectively copying the detection capability into the operational system.
3Productivity
If multiple frames of fingerprint images are obtained and initial fingerprint background data is updated based on these images, then productivity is improved, but use of energy increases
Solution Approach 1:
The system processes multiple frames of images to determine background data, using more data than the minimum single frame would provide. This partial or excessive action of capturing and processing multiple frames improves the reliability and accuracy of background data determination, thereby enhancing productivity and assembly efficiency despite the increased energy consumption.
Data Source
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AI summary
Embodiments of the present disclosure provide a method for obtaining fingerprint background data, an apparatus for obtaining fingerprint background data, an electronic device, and a storage medium, wherein the method for obtaining fingerprint background data comprises: obtaining multiple frames of fingerprint images by a fingerprint module; and updating initial fingerprint background data based on at least some fingerprint images among the multiple frames of fingerprint images to obtain fingerprint background data of the fingerprint module. The method for obtaining fingerprint background data in the embodiments of the present disclosure determines the fingerprint background data during the acquiring the fingerprint images, so that the fingerprint background data can be determined when a user enters his fingerprint for a first time without the need to obtain the fingerprint background data via a detection apparatus in a particular detection environment during the assembly of the fingerprint module. Therefore, it is not necessary to provide the detection apparatus and a detection environment during the assembly, thereby reducing the assembly costs of the fingerprint module, and improving the assembly efficiency of the fingerprint module.