Pixel Headlight Control for Non-Overlapping Road Projections
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Solution Overview
Problem
Modern vehicle headlights struggle to accurately project dynamic road markings and information onto the road surface without overlapping with static markings, leading to driver confusion and safety issues, especially when road conditions change.
Innovation Solution
A method utilizing a high-frequency image sequence with a reference image for uniform illumination, synchronized with a vehicle camera to detect and record route equipment, and an evaluation unit that compares camera data with a database to adjust the control signal for the pixel headlight, ensuring accurate and non-overlapping projection of dynamic road information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the pixel headlight projects dynamic road markings and information onto the road surface, then driver guidance is improved, but overlapping with static markings occurs causing driver confusion
Solution Approach 1:
The system uses a camera to capture images of the road surface and detects static markings. This feedback information is processed to determine the positions and characteristics of existing static markings. Based on this feedback, the pixel headlight dynamically adjusts its projection to avoid overlapping with detected static markings, thereby preventing driver confusion while maintaining accurate road information guidance.
Solution Approach 2:
The headlight projection is made dynamic and adaptive rather than static. The system continuously adjusts the projection pattern based on real-time detection of road conditions and static markings. This dynamic adaptation allows the headlight to optimize its information projection to match the actual road situation, avoiding fixed patterns that may conflict with static markings.
2Illumination intensity
If the pixel headlight provides uniform illumination of the roadway, then road visibility is improved, but energy consumption increases
Solution Approach 1:
Instead of providing uniform illumination across the entire roadway, the system uses local quality by illuminating only specific regions where dynamic road information needs to be projected. The pixel headlight selectively activates individual pixels or pixel groups based on the detected road layout and static marking positions, providing targeted illumination and information projection only where necessary, thereby reducing overall energy consumption while maintaining effective road visibility.
Data Source
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AI summary
The invention relates to a method for controlling a pixel headlight of a motor vehicle disposed on a driving lane, in which: - the pixel headlight (10, 12) outputs light (40) as a function of a control signal representing an image sequence (14), wherein a respective individual image (20, 22) of the image sequence (14) corresponds to a respective light distribution that is to be provided at a given time by the pixel headlight (10, 12), - the driving lane is detected by means of a vehicle camera, and in which - the camera data is evaluated and the control signal is provided as a function of a determined indicative equipment of the driving lane, wherein - the image sequence (14) is provided with an image sequence frequency of greater than 24 Hz and comprises at least one reference image (16) for uniformly illuminating the driving lane, - the vehicle camera is synchronized with respect to the reference image (16), - the indicative equipment of the driving lane and information data associated with the indicative equipment of the driving lane are determined on the basis of the provided camera data (16), - the associated information data is compared with data of a database, and - the control signal is determined as a function of the comparison.