Junction View Image Generation for Navigation Systems
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Solution Overview
Problem
Navigation systems struggle to clearly visualize complex junctions where two junctions are close together, leading to insufficient time for drivers to process maneuver instructions, especially at high speeds, resulting in potential missed turns or safety hazards.
Innovation Solution
A method to generate a junction view image by adjusting the road geometry to shorten the intermediate road segment connecting two junctions, allowing both to be visualized in a single image, with optional filtering to smooth transitions and superimposing maneuver instructions, enhancing decision-point visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the intermediate road segment is shortened to visualize both junctions in one image, then the decision-point visibility is improved, but the geometric accuracy of the road segment is compromised
Solution Approach 1:
The road segment geometry is dynamically adjusted based on the presence of multiple junctions. The system detects when two junctions are close together and automatically modifies the intermediate road segment's geometry to shorten it, allowing both junctions to be visualized in a single perspective view image. This dynamic adaptation resolves the contradiction by prioritizing decision-point visibility over strict geometric accuracy in this specific context.
Solution Approach 2:
The invention applies different geometric characteristics to different parts of the road network. The intermediate road segment between two close junctions is treated differently from other road segments - it is shortened specifically to accommodate both junctions in the view, while maintaining accurate geometry for other segments. This local quality adjustment allows the system to optimize for visibility in critical areas without compromising overall geometric accuracy.
2Loss of information
If the perspective view angle is increased to provide an overhead view, then the understanding of roads in the intersection is improved, but the detail visibility of specific maneuvers is reduced
Solution Approach 1:
The system dynamically adjusts the perspective view angle based on the complexity of the junction and the presence of multiple decision points. When two junctions are close together, the system uses a adjusted perspective angle that balances overhead view clarity with maneuver detail visibility. This dynamic angle adjustment allows the system to optimize both road understanding and specific maneuver visibility according to the particular junction configuration.
Data Source
AI summary
A method of generating a junction view is disclosed. The method includes, in at least one embodiment:—acquiring a first junction from a map database;—acquiring a second junction from the map database, wherein the first and second junction are connected by way of an intermediate road segment;—determining a characteristic of the intermediate road segment between the first and second junction from the map database; and—if the characteristic of the road segment applies to a predefined condition:—adjusting the road geometry resulting in a shorter intermediate road segment; and—generating the junction view image visualizing the first and second junction using the shorter intermediate road segment. At least one embodiment of the method provides a solution to visualize in one image two decision points which will follow each other in a short time when traveling through the two decision points, i.e. two junctions.