AR Head-Up Display Navigation Cues for Positioning Errors
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Solution Overview
Problem
Current augmented reality head-up displays in vehicles face challenges in accurately positioning virtual navigation hints due to positioning inaccuracies, leading to display errors and navigation information being outside the field of view.
Innovation Solution
A method and device that extend virtual elements transversely to compensate for position inaccuracies, rendering the element with the shortest distance to the center of the field of view, and adjusting elements based on steering angles and position changes to maintain accurate navigation hints within the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If virtual elements are positioned based on GPS data with sensor fusion, then navigation accuracy is improved, but display errors cannot be ruled out due to remaining positioning inaccuracies
Solution Approach 1:
The system pre-calculates multiple virtual element positions corresponding to different possible vehicle positions (e.g., GPS position minus/plus error margin). These pre-calculated positions are prepared in advance before the actual navigation display, so when positioning errors occur, the correct virtual element position is already available for immediate display, eliminating display errors caused by positioning inaccuracies.
2Device complexity
If the field of view is limited by installation space, then device complexity is reduced, but navigation information may lie outside the field of view and cannot be shown
Solution Approach 1:
Instead of expanding the field of view horizontally (which would require more installation space), the system extends virtual elements in the depth dimension (along the optical axis). By creating multiple virtual elements at different depths corresponding to different vehicle positions, the system ensures that at least one virtual element remains within the limited field of view even when positioning errors occur, thus preventing navigation information loss without increasing device complexity.
Data Source
AI summary
The present invention relates to a method, a computer program with instructions, and a device for generating a display of an augmented reality head-up display for a motor vehicle. In a first step, a position of the motor vehicle is determined. A plurality of virtual elements for a navigation hint is then provided on the basis of the position of the motor vehicle. The virtual elements, as seen from the motor vehicle, extend on both sides in a lateral direction to outside a field of view of the augmented reality head-up display. Finally, at least that virtual element which has the shortest distance to a center of the field of view is rendered.