Driver Viewpoint Display Control for Stable AR Image Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies that constantly correct image positions based on a driver's line of sight can cause discomfort due to frequent positional changes of the image, leading to a mismatch between the target object and the image.
Innovation Solution
A display control method and device that generate images in a preset coordinate system, detect the driver's eye position, and adjust image display based on the detected line of sight, suppressing changes exceeding a threshold value to reduce positional discrepancies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the position of an image is constantly corrected in accordance with the movement of the driver's line of sight, then the image remains aligned with the target object, but the driver feels inconvenience due to frequent positional changes and flickering
Solution Approach 1:
The system dynamically adjusts image position correction based on line of sight movement characteristics. When line of sight movement is detected within a threshold, the image position is corrected in real-time to maintain alignment. When movement exceeds the threshold, the correction is suppressed to prevent flickering and driver discomfort. This dynamic switching between correction modes resolves the contradiction between maintaining precision and ensuring driver comfort.
Solution Approach 2:
The system changes the parameter of image position stability based on line of sight movement magnitude. By monitoring line of sight changes and comparing them against a threshold value, the system transitions between two states: a correction-active state where image position follows line of sight movement, and a correction-suppressed state where image position remains stable. This parameter change approach allows the system to optimize both alignment accuracy and driver comfort under different conditions.
2Adaptability or versatility
If the image position is constantly updated based on line of sight detection, then the display adapts to driver movement, but the position stability deteriorates causing flickering
Solution Approach 1:
The system implements dynamic control of image position updates by continuously monitoring line of sight movement and adjusting the correction application accordingly. The system transitions between dynamic tracking mode (when movement is small) and static stabilization mode (when movement is large), allowing it to adapt to driver behavior while maintaining position stability when needed.
Solution Approach 2:
The system takes preliminary action by detecting line of sight movement in advance and predicting potential instability. By comparing detected line of sight changes against a threshold before applying position correction, the system prevents flickering and position instability proactively, rather than reacting after the problem occurs. This preliminary anti-action ensures both adaptability and stability.
Data Source
AI summary
A computer performs processing including: generating an image to be presented to a driver in a preset coordinate system; identifying a display position at which the generated image is displayed in a field of vision of a driver, based on a viewpoint position of the driver; generating a driver viewpoint image obtained by converting the generated image to an image represented in a coordinate system defined with the viewpoint position as a reference; causing the driver viewpoint image to be displayed in such a manner that the driver viewpoint image overlaps a field of vision of the driver; detecting a line of sight of the driver; and when determining that a change amount of the detected line of sight exceeds a threshold value, suppressing change in a position at which the driver viewpoint image is displayed occurring in association with change in the viewpoint position.