Biometric Gate Layout for Front-Facing User Imaging
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Solution Overview
Problem
Existing gate systems for biometric authentication, such as those described in Patent Literature 1 and 2, may not secure sufficient accuracy due to the imaging angle of the user.
Innovation Solution
A gate system is designed with a guide that defines a movement path for users, including a first portion parallel to the imaging device's optical axis for photographing and a second portion extending in a direction not parallel to the first, allowing for improved biometric authentication accuracy by ensuring the user is imaged from the front and allowing smooth passage without obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the user moves directly toward the imaging device for authentication, then the imaging angle improves accuracy, but the user passage path becomes blocked or restricted
Solution Approach 1:
The movement path is divided into two distinct segments: a first portion where the user approaches the imaging device along the optical axis for accurate photographing, and a second portion where the user continues movement in a different direction for smooth passage. This segmentation allows the system to optimize for both authentication accuracy and passage ease by having different path characteristics for different phases of user movement.
Solution Approach 2:
The path transition from the first portion to the second portion involves changing the direction from being parallel to the optical axis to being non-parallel, effectively moving the user trajectory into a different dimensional orientation. This allows the user to complete authentication with proper imaging angle while maintaining smooth passage through the gate system without being blocked.
2Measurement precision
If the imaging device is positioned to capture the user from the front, then authentication accuracy improves, but the device complexity increases
Solution Approach 1:
The guide structure pre-defines the user's movement path before authentication occurs, guiding the user to the optimal position for imaging. By performing this positioning action in advance through the guide's physical constraints, the system achieves accurate front-facing images without requiring complex adjustable positioning mechanisms or multiple cameras, thus improving accuracy while keeping device complexity low.
Data Source
AI summary
Provided is a gate system arranged between a first region and a second region, including a guide that defines a movement path of a user from the first region to the second region and an imaging device that photographs the user to acquire an image used for biometric authentication. The movement path includes a first portion in which the user is photographed and a second portion through which the user passes after being photographed. The first portion extends from the first region toward the imaging device in a first direction that is parallel to an optical axis of the imaging device. The second portion extends from an end of the first portion in a second direction that is not parallel to the first direction.