Gate Apparatus Dual Light Control for Face Authentication
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Solution Overview
Problem
Face authentication systems at airports struggle to acquire high-quality images for accurate matching, as variations in brightness across an image can render it unsuitable for authentication.
Innovation Solution
A gate apparatus equipped with an upper light and a lower light, along with a light control unit that adjusts the luminance of both lights to ensure uniform illuminance when acquiring biological information, such as face images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If face authentication is performed using existing gate apparatus, then authentication function is provided, but image quality is insufficient due to non-uniform brightness
Solution Approach 1:
The illumination system is segmented into multiple independent light sources positioned at different locations (above, beside, and below the user). Each light source can be controlled independently to illuminate different regions of the face, allowing compensation for non-uniform brightness patterns and achieving overall uniform illumination for high-quality authentication images
Solution Approach 2:
Different regions of the face receive tailored illumination from strategically positioned light sources. The upper light illuminates the upper face, side lights illuminate the cheeks and jaw, and the lower light illuminates the chin area. This localized illumination approach ensures each region contributes to uniform overall brightness, resolving the brightness uniformity issue
2Illumination intensity
If multiple light sources are added to improve image quality, then brightness uniformity is enhanced, but device complexity increases
Solution Approach 1:
Multiple light sources are merged into a single integrated illumination system within the gate apparatus. The control unit coordinates all light sources (upper light, side lights, lower light) as a unified system, managing their activation and luminance adjustment collectively. This merging approach maintains functional complexity while achieving uniform illumination through coordinated operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables the acquisition of biological information with uniform brightness, enhancing the accuracy of authentication processes by ensuring high-quality image capture.
Implementation Method 1
an upper light that emits light from above the user; a lower light that emits light from below the user; and a light control unit that changes luminance of the light emitted from the upper light and luminance of the light emitted from the lower light
Data Source
AI summary
A gate apparatus includes an upper light that emits light from above a user, a lower light that emits light from below the user, a light control unit, and an acquisition unit. The acquisition unit acquires biological information about the user. The light control unit changes the luminance of the light emitted from the upper light and the luminance of the light emitted from the lower light when the biological information about the user is acquired.