Biometric Authentication Device Hand Positioning Guide
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Solution Overview
Problem
Biometric authentication devices face challenges in accurately capturing and matching biological information, such as fingerprints and vein patterns, due to improper alignment and positioning of the user's hand, leading to reduced authentication accuracy and user convenience.
Innovation Solution
A biometric authentication device equipped with two sensors for capturing finger and palm biological information, a guiding mechanism to adjust the hand position, and a processor to determine the moving direction of the hand to ensure proper alignment within the sensors' imaging ranges, allowing for automatic calibration and improved image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a guide is provided to help users position their hand, then authentication accuracy is improved, but device complexity increases
Solution Approach 1:
The system automatically detects the object area in the captured image and determines the hand moving direction without user intervention. The control unit autonomously adjusts the guiding member position based on detected positional deviations, eliminating the need for users to manually understand or follow complex positioning guides while maintaining high authentication accuracy
Solution Approach 2:
The system captures images, detects object areas, determines positional relationships between the guiding member and biological information, and uses this feedback to automatically adjust the guiding member position. This closed-loop feedback mechanism ensures accurate hand positioning while reducing device complexity by using software-based control rather than complex mechanical positioning systems
2Measurement precision
If the imaging range is fixed, then device complexity is reduced, but authentication accuracy deteriorates due to incomplete capture of biological information
Solution Approach 1:
The system dynamically adjusts the position of the guiding member based on real-time detection of object area positions in captured images. The control unit modifies the guiding member position to ensure complete capture of biological information, transforming a static imaging system into a dynamic one that adapts to different hand positions while maintaining a fixed sensor structure
Solution Approach 2:
The guiding member acts as an intermediary element between the user's hand and the fixed sensor. By adjusting the guiding member position rather than moving the sensor itself, the system achieves flexible positioning capability with minimal device complexity, as the guiding member can be repositioned without affecting the fixed sensor assembly
3Ease of operation
If manual positioning is required, then ease of operation deteriorates, but device complexity is reduced
Solution Approach 1:
The system performs automatic hand positioning through the control unit that detects object areas and determines moving directions without user intervention. Users simply need to place their hand on the guiding member, and the system autonomously adjusts positioning, dramatically improving ease of operation while maintaining relatively simple device architecture through software-based control
Solution Approach 2:
The system replaces complex mechanical positioning mechanisms with image processing and control algorithms. Instead of using精密 mechanical positioning systems, the patent uses software-based object detection and automatic guiding member position adjustment, substituting mechanical complexity with computational simplicity to improve ease of operation
Data Source
AI summary
A biometric authentication device determining whether or not a user is to be authenticated, by matching biological information of a finger of the user and biological information of a palm thereof against biological information of a finger of a registered user and biological information of a palm thereof, the biometric authentication device includes, a first sensor configured to generate a first biological image in which the biological information of the finger of the user is captured; a second sensor configured to generate a second biological image in which the biological information of the palm of the user is captured; a guiding member configured to regulate a position of the finger of the user; an object area detection unit configured to detect a first object area in which the biological information of the finger is captured on the first biological image; and a position determination unit configured to determine.