Vehicle Interior Illumination Control for Occupant Glare Reduction
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Solution Overview
Problem
Existing imaging systems in vehicles struggle with glare issues that interfere with the capture of clear images of vehicle occupants, particularly in varying lighting conditions, which can affect the accuracy of occupant identification and tracking.
Innovation Solution
An imaging system with multiple illumination sources and a controller that dynamically adjusts the illumination based on glare detection and environmental conditions to optimize image capture, including switching between modes and adjusting the intensity, pulse rate, and angle of illumination to minimize glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the illumination source increases illumination intensity to improve image capture in varying lighting conditions, then the image brightness and visibility are improved, but glare is generated that interferes with clear imaging of vehicle occupants
Solution Approach 1:
The illumination source dynamically adjusts its operating parameters (intensity, pulse rate, angle) based on real-time detection of glare and environmental conditions. The controller continuously modifies illumination settings to optimize image capture while preventing glare formation, transitioning between different operating modes as conditions change.
Solution Approach 2:
The illumination source operates in pulsed intervals rather than continuous illumination, with the pulse rate dynamically adjusted based on detected glare conditions and ambient lighting. This periodic operation allows the system to deliver sufficient light for imaging while providing dark intervals that prevent sustained glare formation on occupant surfaces.
2Measurement precision
If the system uses multiple illumination sources to improve image capture coverage, then the imaging coverage and quality are improved, but the system complexity and energy consumption increase
Solution Approach 1:
Multiple illumination sources are combined into a coordinated system where the controller manages all sources from a single control unit. The system merges the functionality of multiple LEDs into a unified illumination system that operates under centralized control, reducing operational complexity despite having multiple physical sources.
Solution Approach 2:
Each illumination source is designed to perform multiple functions: providing ambient lighting, enabling image capture in various lighting conditions, and being individually controllable for glare reduction. The system can selectively activate different sources based on positional relationships with occupants and environmental conditions, making each source multi-functional.
3Measurement precision
If the system dynamically adjusts illumination parameters to reduce glare and improve image quality, then the occupant identification accuracy is improved, but the control system complexity and processing time increase
Solution Approach 1:
The system implements a feedback loop where the camera continuously captures images, the controller analyzes detected glare and ambient lighting conditions, and automatically adjusts illumination parameters in response. This closed-loop control enables real-time optimization of image quality and glare reduction without requiring complex manual intervention.
Solution Approach 2:
The illumination system is self-regulating, automatically detecting glare conditions and adjusting its own operating parameters without external intervention. The controller monitors the imaging results and autonomously modifies illumination intensity, pulse rate, and angle to maintain optimal imaging conditions while preventing glare.
Data Source
AI summary
An imaging system includes an illumination source configured to illuminate at least a portion of a vehicle interior. A camera is configured to capture one or more images of the portion of the vehicle interior. A controller is in communication with the illumination source and the camera. The controller is configured to receive the one or more images, identify a glare associated with an occupant of the vehicle interior in the one or more images, and generate and communicate a signal to adjust the illumination source to limit the glare.