AR HUD Content Visualization With 3D Depth and Overlap Control
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Solution Overview
Problem
Current augmented reality (AR) systems for vehicle navigation struggle to effectively visualize route guidance and warning content in a way that maintains depth perception and prevents overlap with the real environment, especially as the distance from the vehicle increases, leading to reduced visibility and psychological instability for drivers.
Innovation Solution
A processor-implemented method and apparatus that create a three-dimensional object disposition space, allowing for stereoscopic visualization of virtual content objects with depth, using a head-up display (HUD) to project graphic representations corresponding to route guidance and warning content, adjusting their position and shape based on the user's viewpoint and distance, ensuring clear visibility and preventing overlap with the real environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If virtual content objects are projected onto a flat projection plane in existing AR systems, then the system structure is simple, but depth perception is lost and content overlaps with the real environment at increased distances
Solution Approach 1:
The patent transitions from a 2D projection plane to a 3D object disposition space, enabling virtual content objects to be positioned at different depths along the optical axis. This dimensional expansion allows route guidance and warning content to be displayed at appropriate depths without overlapping real environment objects, while maintaining a manageable system through coordinate mapping and viewpoint-based rendering adjustments.
2Area of stationary object
If the distance from the vehicle to the projection plane increases, then the field of view expands, but the visibility and psychological stability of the driver decreases due to content overlap and loss of depth perception
Solution Approach 1:
The system dynamically adjusts the position and shape of virtual content objects based on the user's viewpoint and the distance to the projection plane. As the vehicle moves forward or the steering angle changes, the object disposition space is recalculated to maintain appropriate depth relationships and prevent overlap with real environment objects, thereby preserving driver psychological stability while expanding field of view.
Solution Approach 2:
The patent modifies multiple parameters including the position coordinates (x, y, z) of virtual content objects, their shape dimensions, and depth distances along the optical axis. These parameter adjustments are performed in real-time based on vehicle position, steering angle, and user viewpoint to optimize both field of view coverage and content visibility without overlap.
3Manufacturing precision
If virtual content objects are displayed without depth adjustment, then the system operation is simple, but visibility is reduced at increased distances and content overlaps with the real environment
Solution Approach 1:
The system pre-establishes an object disposition space with defined depth ranges and positioning rules for different types of content (route guidance, warnings, etc.). Before rendering, virtual content objects are assigned appropriate positions and depths within this pre-configured space based on their semantic type and the current driving context, enabling precise positioning without complex real-time calculations during operation.
Data Source
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AI summary
A processor-implemented method includes: adjusting a virtual content object based on a shape of the virtual content object projected onto a projection plane; and visualizing the adjusted virtual content object on the projection plane.