Digital Twin 3D Route Guidance for AR Positioning Accuracy

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Solution Overview

Problem

Existing route guidance technologies using augmented reality suffer from inaccuracies in vehicle positioning, Point Of Interest (POI) coordinates, and mapping errors due to height information and real-time vehicle movement.

Innovation Solution

A route guidance device and system that utilizes a digital twin 3D map generated by mapping camera images to 3D map information, overlaying graphic objects for route guidance, and integrating augmented reality to provide optimized navigation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If augmented reality technology is used for route guidance, then route guidance functionality is provided, but positioning accuracy and mapping precision deteriorate due to vehicle movement and height information errors

Engineering Contradiction:

Improveroute guidance functionalityVSAvoidpositioning accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system pre-generates a digital twin 3D map of the route environment before the vehicle reaches it. This preliminary action allows the route guidance graphic objects to be accurately positioned on the pre-established 3D map structure, eliminating positioning errors caused by real-time vehicle movement and height information inaccuracies.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system creates a digital twin (virtual copy) of the real-world 3D map environment. This digital twin serves as an accurate reference framework where route guidance graphic objects can be precisely positioned without being affected by real-time vehicle positioning errors or movement.

Inventive Principle:

Principle #26Copying

2Adaptability or versatility

If augmented reality technology is used for route guidance, then route guidance functionality is provided, but mapping precision deteriorates due to height information errors and real-time vehicle movement

Engineering Contradiction:

Improveroute guidance functionalityVSAvoidmapping precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The digital twin 3D map is pre-generated with accurate spatial relationships and height information before the vehicle reaches the route. This preliminary mapping action eliminates the need for real-time 3D mapping, thereby avoiding mapping precision deterioration caused by vehicle movement and height information errors.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system creates a digital twin (virtual copy) of the real-world environment with precise 3D spatial information. This digital twin serves as an accurate mapping reference that is not affected by real-time vehicle movement or height information errors, thereby maintaining high mapping precision.

Inventive Principle:

Principle #26Copying

3Measurement precision

If digital twin 3D map is generated and used, then mapping precision and positioning accuracy are improved, but device complexity increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The digital twin 3D map is pre-generated and stored on the server before the vehicle reaches the route. This preliminary action transfers the computational complexity from the vehicle's onboard device to the server, simplifying the vehicle's device while maintaining high positioning accuracy through the pre-established digital twin.

Inventive Principle:

Principle #10Preliminary action

4Manufacturing precision

If digital twin 3D map is generated and used, then mapping precision and positioning accuracy are improved, but device complexity increases

Engineering Contradiction:

Improvemapping precisionVSAvoidsystem complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The digital twin 3D map with precise mapping information is pre-generated and stored on the server before the vehicle reaches the route. This preliminary mapping action transfers the computational complexity from the vehicle's onboard device to the server, simplifying the vehicle's device while maintaining high mapping precision through the pre-established digital twin.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12498240B2Route guidance device and route guidance system

Publication Date: 2025.12.16 LG ELECTRONICS INC

AI summary

The present invention provides a route guidance device and a route guidance system. The route guidance device according to an embodiment of the present invention comprises: an interface unit which communicates with at least one of components provided in a vehicle; and a processor which generates a digital twin three-dimensional map using at least one among an image captured by a camera provided in the vehicle, two-dimensional map information, and three-dimensional map information, wherein the processor overlays a graphical object related to route guidance on the digital twin three-dimensional map, and performs route guidance using the digital twin three-dimensional map overlaid with the graphical object related to route guidance.