Dynamic HUD Projection Alignment for Driver Visibility
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Solution Overview
Problem
Current heads-up display (HUD) systems for navigation in vehicles often project directional arrows and location-aware entities (LAE) in fixed positions on the windshield, which can obstruct the driver's view, be distracting, and fail to consider terrain and visibility, leading to reduced situational awareness and safety.
Innovation Solution
A method and system that generate a 3D model of the vehicle's surroundings using digital mapping, associate LAE with precise positions in the 3D model, and project graphic representations onto the windshield, ensuring the viewer, graphic indicator, and LAE are aligned, with dynamic adjustments for viewing angle, distance, and terrain, allowing for intuitive and safe navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If navigation elements are projected in fixed positions on the windshield, then the navigation information is always visible to the driver, but the driver's view is obstructed and distractions increase
Solution Approach 1:
The patent implements dynamic projection of navigation elements that move and adjust their position on the windshield based on the driver's viewing angle, vehicle movement, and terrain conditions. The projection system transitions from static fixed positions to dynamic adaptive positioning, allowing navigation information to remain visible while reducing obstruction and distraction by appearing only when and where needed.
Solution Approach 2:
The patent applies local quality by projecting navigation elements selectively at specific locations on the windshield rather than uniformly across the surface. The system determines optimal projection positions based on the driver's line of sight, ensuring navigation information appears in regions that provide visibility without blocking the driver's view of the road.
2Reliability
If navigation elements are projected considering terrain and visibility, then situational awareness is improved, but the system complexity increases
Solution Approach 1:
The patent introduces a projection control system as an intermediary between the navigation data and the windshield projection. This intermediary layer processes terrain information, visibility conditions, and driver position data to determine optimal projection parameters, thereby improving situational awareness while managing system complexity through modular architecture.
Solution Approach 2:
The patent implements a multi-functional projection system that simultaneously considers terrain features, visibility conditions, driver position, and navigation data to determine projection parameters. This universal approach allows a single system to handle multiple factors that affect navigation display quality, improving reliability without requiring separate specialized systems for each factor.
3Measurement precision
If graphic representations are projected at calculated positions based on multiple parameters, then navigation accuracy is improved, but the calculation and processing requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing projection parameters such as windshield geometry, driver position ranges, and terrain classification data before actual navigation projection occurs. This preprocessing reduces the computational burden during real-time operation, allowing accurate navigation projection based on multiple parameters without excessive processing power requirements.
Data Source
AI summary
A method including the following steps is provided: generating a three dimensional (3D) model of a scene within a specified radius from a vehicle, based on a source of digital mapping of the scene; associating a position of at least one selected LAE contained within the scene, with a respective position in the 3D model; superimposing the projecting onto a specified position on a transparent screen facing a viewer and associated with the vehicle, at least one graphic indicator associated with the at least one LAE, wherein the specified position is calculated based on: the respective position of the LAE in the 3D model, the screen's geometrical and optical properties, the viewer's viewing angle, the viewer's distance from the screen, the vehicle's position and angle within the scene, such that the viewer, the graphic indicator, and the LAE are substantially on a common line.