Vehicle AR-HUD Display Control for Stable Relative Distance Perception
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Solution Overview
Problem
Existing augmented reality head-up displays (AR-HUDs) in vehicles struggle to maintain clear and stable AR images when the distance between the vehicle and a preceding object changes, leading to difficulty in viewing and perceiving the relative distance accurately.
Innovation Solution
A display control device adjusts the position of an AR image's intersection point within a virtual display region based on the relative distance between the vehicle and the moving object, ensuring the AR image remains visible and stable by varying the distance between intersection points as the relative distance changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the distance between the vehicle and the preceding vehicle becomes long, then the driver can see the preceding vehicle, but the driver becomes unable to see the preceding vehicle through the virtual display region
Solution Approach 1:
The patent applies dynamics by making the position of the AR image on the virtual display region change dynamically based on the distance between the vehicle and the preceding vehicle. When the distance increases, the AR image position is adjusted accordingly, allowing the driver to continue viewing the AR image within the virtual display region even at long distances, thereby resolving the contradiction between visibility and ease of displaying the AR image.
2Adaptability or versatility
If the distance between the vehicle and the preceding vehicle changes, then the AR image can be displayed, but the driver feels that the distance between the AR image and the preceding vehicle is changing
Solution Approach 1:
The patent applies parameter changes by adjusting the position parameter of the AR image on the virtual display region based on the distance between the vehicle and the preceding vehicle. By changing the AR image position in coordination with distance changes, the system maintains a stable perceived relationship between the AR image and the preceding vehicle, resolving the contradiction between adaptability to distance changes and perceived distance stability.
Data Source
AI summary
Given that an intersection point of a straight line, which connects a relatively moving body and an eyeball reference position of a driver of a vehicle, and a virtual surface, which includes a virtual display region and is wider than the virtual display region, is defined as a first intersection point, and an intersection point between the virtual display region and a straight line, which connects the eyeball reference position and an AR image, is defined as a second intersection point, a position of the second intersection point is controlled such that a second distance, which is a distance between the first intersection point and the second intersection point, is longer when a first distance, which is a distance between the relatively moving body and the vehicle, is longer than a predetermined value, than when the first distance is the predetermined value.