Vehicle Map Conflation via Coordinate Transformation
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Solution Overview
Problem
The conflation of information from different geographical maps used in a vehicle's head-up display is time-consuming and error-prone, often resulting in unclear or inaccurate representations of the vehicle's surroundings.
Innovation Solution
A method that determines an initial mapping of a first map to the vehicle's surroundings and a second mapping of a second map to the first map, allowing for the compensation of positional errors and the integration of information from both maps to provide accurate and detailed combined map information, utilizing landmarks and processing devices with minimal computational resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If information from multiple maps is conflated using traditional methods, then comprehensive map information is provided, but the process is time-consuming and error-prone
Solution Approach 1:
The patent introduces a coordinate transformation system as an intermediary that automatically converts coordinates between different map systems (e.g., WGS84 to local tangent plane coordinates). This mediator handles the conflation process systematically, eliminating manual intervention and reducing both time consumption and errors while preserving comprehensive map information from multiple sources.
Solution Approach 2:
The system implements a universal coordinate transformation framework that can handle multiple map systems and projection types through a single integrated process. This multi-functional approach consolidates various conflation operations into one system, reducing overall processing time and eliminating redundant operations while maintaining information completeness across different map sources.
2Measurement precision
If detailed information from the first map is used, then accuracy for vehicle control is improved, but the coverage area is limited
Solution Approach 1:
The patent merges information from multiple map layers with different characteristics - combining the high-precision, limited-area first map with the lower-precision, wide-area second map. The coordinate transformation system integrates these maps systematically, allowing the system to use detailed information where available and broader coverage information elsewhere, thus achieving both high accuracy and extensive coverage simultaneously.
3Area of stationary object
If information from the second map is used, then coverage area is improved, but position accuracy deviates further from reality
Solution Approach 1:
The system applies local quality by using high-precision data from the first map for nearby objects and operations requiring accuracy, while relying on the broader second map for distant objects and general navigation. The coordinate transformation enables dynamic selection of appropriate map data based on spatial context, ensuring optimal precision for each local area while maintaining comprehensive coverage.
Data Source
AI summary
A method for providing combined map information on board a vehicle includes determining a first mapping of a first map to an environment of the vehicle; determining a second mapping of a second map to the first map, wherein the second mapping maps the position of a landmark in the first map to a position of the same landmark in the second map; and providing information from the first and second maps relating to the surrounding area.