Vehicle Camera View Adaptation for Frame Rate and Brightness
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Solution Overview
Problem
Camera systems in vehicles suffer from variations in illumination due to environmental factors, leading to reduced visibility and safety, particularly at dawn and dusk, as well as from shadows and infrastructure features, which affect display brightness and impair the driver's perception of external regions.
Innovation Solution
An adaptive camera and display system that adjusts the frame rate and display characteristics based on estimated illuminance and vehicle state, using a control module to dynamically configure imaging systems and display devices to compensate for environmental changes, including progressive brightness adjustments and region-of-interest analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the camera frame rate is increased to capture more environmental changes, then the responsiveness to environmental changes improves, but the image brightness and visibility deteriorate due to reduced exposure time
Solution Approach 1:
The system dynamically adjusts the camera frame rate based on detected environmental conditions. When rapid environmental changes are detected, the frame rate is increased to capture these changes, and when stability is detected, the frame rate is reduced to improve image brightness and visibility.
Solution Approach 2:
The system changes the operational parameters of the camera by adjusting the frame rate according to environmental conditions. This parameter adjustment allows the system to optimize between capturing environmental changes and maintaining image brightness based on current lighting conditions.
2Illumination intensity
If the display brightness is increased to improve visibility in dark environments, then the driver's visibility improves, but the perceived variations in display brightness due to environmental illumination changes worsen
Solution Approach 1:
The system uses feedback from environmental sensors to continuously monitor illumination conditions and adjusts the display brightness accordingly. This feedback mechanism allows the display to maintain consistent perceived brightness by compensating for environmental illumination changes, thereby improving both visibility and reliability.
3Illumination intensity
If the camera exposure time is increased to improve image brightness, then the visibility improves, but the ability to capture rapid environmental changes worsens due to reduced frame rate
Solution Approach 1:
The system dynamically adjusts the camera frame rate based on detected environmental conditions. When rapid environmental changes are detected, the frame rate is increased to capture these changes, and when stability is detected, the frame rate is reduced to improve image brightness and visibility.
Data Source
AI summary
Vehicles and related systems and adaptive display adjustment methods include obtaining image data captured using an initial frame rate from an imaging system onboard the vehicle, obtaining current vehicle state information, determining a representative exposure setting for the imaging system based at least in part on the current vehicle state information, determining an estimated illuminance of a surrounding environment of the vehicle based at least in part on the image data and the representative exposure setting and automatically configuring the imaging system for a different, updated frame rate based on the estimated illuminance. Thereafter, the method continues by obtaining subsequent image data captured using the updated frame rate, providing a graphical user interface including a graphical representation of the subsequent image data on a display device associated with the vehicle, and dynamically adjusting a display characteristic after configuring the imaging system for the updated frame rate.