Vehicle HUD Marker Positioning to Avoid Preceding Vehicle Overlap
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Solution Overview
Problem
Conventional vehicle display devices face challenges in improving the visibility of marker images, particularly when they overlap with other objects or road features, leading to potential misrecognition.
Innovation Solution
A vehicle display device that includes a display mounted on a vehicle, a controller, and a position information acquisition unit, which calculates a virtual straight line connecting the vehicle and a preceding vehicle. The controller adjusts the display of the marker image based on the inclination of this line, shifting it opposite to the inclination to prevent overlap and enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the marker image is displayed at the position below the preceding vehicle, then the marker image accurately indicates the preceding vehicle's position, but the marker image may overlap with other objects or road features reducing visibility
Solution Approach 1:
The marker image position is made dynamic rather than fixed. The controller continuously adjusts the marker image position based on the calculated inclination of the virtual straight line, shifting it in real-time to maintain both positional accuracy and visibility by avoiding overlaps with moving objects and road features.
Solution Approach 2:
The display position parameters of the marker image are changed based on the inclination angle of the virtual straight line. By calculating the inclination and applying a compensatory shift, the system modifies the marker's position parameters to achieve optimal visibility while maintaining accurate indication of the preceding vehicle's location.
2Object-affected harmful factors
If the marker image is shifted to avoid overlap, then visibility is improved, but the marker image may deviate from the actual position of the preceding vehicle
Solution Approach 1:
The system performs preliminary calculation of the virtual straight line inclination before displaying the marker image. By anticipating the overlap issue and pre-calculating the required shift amount based on the inclination angle, the system adjusts the marker position in advance to prevent overlap while maintaining accurate positional indication.
Solution Approach 2:
The system uses feedback from the calculated inclination of the virtual straight line to continuously adjust the marker image position. The controller monitors the geometric relationship between the vehicle, preceding vehicle, and marker position, and applies compensatory adjustments based on this feedback to maintain both visibility and accuracy.
Data Source
AI summary
A vehicle display device includes a display that is mounted on a vehicle and superimposes and displays an image on a real landscape in front with respect to a front windshield, a controller that controls the display, and a position information acquisition unit that acquires a position of a preceding vehicle. The controller calculates a first virtual straight line that connects the position of the preceding vehicle and a position of the vehicle. When the controller determines that the first virtual straight line is along a straight direction of the vehicle, the controller displays a marker image at a position below the preceding vehicle. When the controller determines that the first virtual straight line is inclined with respect to the straight direction, the controller performs display movement control to display the marker image so as to be shifted from the position below the preceding vehicle.