AR Route Alignment Using Lane-Based Coordinate Shifting
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Solution Overview
Problem
Augmented Reality (AR) routes displayed in in-vehicle systems often appear unnatural, especially at intersections and branch points, due to the use of center road coordinates, leading to a feeling of strangeness.
Innovation Solution
The AR route is formed by shifting node coordinates from road map data to the lane on which the subject vehicle is traveling, based on lane information, to align the AR route with the actual travel path and prevent unnatural appearances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the AR route is formed using center road coordinates from map information, then the route formation process is simple, but the displayed AR route provides a feeling of strangeness and does not match the actual travel path
Solution Approach 1:
The patent transforms the coordinate reference system from center road coordinates to lane-based coordinates. By changing the parameter of coordinate reference from road center to specific lane, the AR route accurately matches the vehicle's travel path while eliminating the feeling of strangeness at intersections and branch points
Solution Approach 2:
The patent creates a virtual copy of the lane structure from map information and superimposes it onto the real-world view. This virtual lane copy is then used to position the AR route, ensuring it aligns with the actual lane the vehicle is traveling in rather than using generic road center coordinates
2Device complexity
If the AR route is formed using center road coordinates, then the system complexity is low, but the route display becomes unnatural at intersections and branch points
Solution Approach 1:
The patent introduces lane information as a new parameter to replace center road coordinates. This parameter change enables the system to distinguish between different lanes at intersections and branch points, making the AR route display natural and accurate without significantly increasing system complexity
Solution Approach 2:
The patent performs preliminary processing of lane information from map data before route formation. By pre-processing and organizing lane coordinates and structures, the system can efficiently generate accurate AR routes at intersections and branch points without adding complex real-time processing requirements
Data Source
AI summary
A display system of the present disclosure forms an AR route by shifting node information included in road map data to a lane on which a subject vehicle is to travel on the basis of lane information. Thus, it is possible to display the AR route which matches a shape of a route on which the subject vehicle is to travel without providing a feeling of strangeness while resolving inconvenience that the AR route is largely displaced from the route on which the subject vehicle is to travel at positions such as an intersection and a branch point, where a plurality of roads intersect.