Driver Face Authentication Using Multi-Angle Vehicle Cameras
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Solution Overview
Problem
Existing face authentication systems in vehicles face challenges with forgery prevention, particularly under lighting conditions like sunlight, and accuracy issues when capturing faces at angles other than front-facing views.
Innovation Solution
A face authentication system using multiple imaging units to capture the driver's face from different angles, including a front imaging unit and a digital side mirror unit, combined with boarding detection and additional authentication methods, to enhance forgery prevention and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single camera is used for face authentication, then the device complexity is reduced, but the system becomes vulnerable to forgery using face images
Solution Approach 1:
The system divides the imaging function into multiple segments by using multiple cameras positioned at different locations (front camera, rearview mirror camera, side camera) to capture face images from different angles, making forgery more difficult while keeping each individual camera simple
Solution Approach 2:
The system integrates the face authentication function within the existing digital side mirror system, where the rearview mirror camera serves dual purposes: traditional rearview monitoring and face authentication, thereby adding forgery prevention capability without significantly increasing overall device complexity
2Reliability
If a near-infrared camera is used for forgery prevention, then the ability to prevent forgery is improved, but the recognition rate decreases under intense near-infrared light conditions like sunlight
Solution Approach 1:
Instead of using near-infrared imaging, the system captures multiple visible light images from different angles using standard cameras and processes these copies to achieve forgery prevention, avoiding the recognition rate degradation caused by near-infrared light interference
Solution Approach 2:
The system changes the imaging parameter from single-angle visible light to multi-angle visible light, achieving forgery prevention through geometric variation rather than spectral variation, thus avoiding sunlight interference issues
3Ease of operation
If face authentication is performed using faces captured at angles other than front-facing, then the ease of operation is improved, but the authentication accuracy decreases
Solution Approach 1:
The system transitions from single-angle (one-dimensional) face capture to multi-angle (three-dimensional) face capture by utilizing cameras positioned at different locations, enabling accurate authentication while accommodating natural driving positions and movements
Data Source
AI summary
A driver face authentication system provided in a movable apparatus includes a first imaging unit that captures a face of a driver at a first angle, a second imaging unit that captures the driver's face at a second angle different from the first angle, a boarding detection unit that detects that the driver is aboard the movable apparatus, and a face authentication unit that, after the boarding detection unit detects that the driver is aboard the movable apparatus, based on a video captured by the first imaging unit and a video captured by the second imaging unit, determines whether the driver captured by the first and second imaging units is a legitimate driver of the movable apparatus.