Windshield HUD Route Display Overlap Handling
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Solution Overview
Problem
Conventional head-up display devices struggle to provide clear readability when the displayed image overlaps with objects on the road, making it difficult for drivers to interpret navigation information effectively.
Innovation Solution
A vehicular display device that uses a front object determiner and display controller to differentiate the display mode of a guide route on a windshield based on overlap with detected objects, employing continuous lines, intermittent arrows, and color/brightness adjustments to ensure clear visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the guide route is displayed continuously to provide complete navigation information, then the completeness of navigation information is improved, but the readability deteriorates when the display overlaps with objects on the road
Solution Approach 1:
The guide route display is segmented into multiple sections based on overlap detection with objects on the road. The display controller divides the route into overlapping portions and non-overlapping portions, applying different display modes to each segment. This segmentation allows the system to maintain complete navigation information while improving readability in critical areas by using intermittent display for overlapping sections and continuous display for non-overlapping sections.
Solution Approach 2:
Different display qualities are applied to different parts of the guide route based on local conditions. The display controller adjusts the display mode locally at each portion of the route depending on whether it overlaps with an object. This local quality approach ensures that each segment of the navigation information is displayed with the most appropriate readability characteristics for its specific context.
2Device complexity
If the display mode is unified for the entire guide route, then the simplicity of display control is improved, but the readability deteriorates in overlapping regions
Solution Approach 1:
The display control system dynamically adjusts the display mode for different portions of the guide route based on real-time detection of objects on the road. The display controller automatically determines which portions overlap with objects and switches between continuous and intermittent display modes accordingly. This dynamic adaptation maintains relative simplicity in the control architecture while significantly improving readability in overlapping regions.
3Ease of operation
If intermittent display is used for overlapping portions, then the readability is improved, but the loss of navigation information increases
Solution Approach 1:
The display controller acts as an intermediary that processes both the navigation information and object detection data to determine the optimal display mode for each portion. By using intermittent display for overlapping portions while maintaining continuous display for non-overlapping portions, the system preserves essential navigation information while improving readability. The intermediary function of the display controller ensures that no critical information is lost while still achieving enhanced readability where needed.
Data Source
AI summary
A front object determiner determines an object on a traveling road surface in front of a host vehicle based on an image of a forward view captured by a front camera. A display controller draws an overlapping portion where a guide route calculated by a navigation device and the object determined by the front object determiner overlap each other in a display region on a windshield and a non-overlapping portion where the guide route and the object do not overlap each other in the display region on the windshield such that the overlapping portion is to be presented in a mode different from a mode for the non-overlapping portion.