Map Creation Unit Using Base Segments for Vehicle Localization
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Solution Overview
Problem
Existing methods for creating or augmenting maps for motor vehicles in dynamic environments, such as indoor car parks, are inefficient due to the need for extensive data processing and transmission, especially in areas with similar but unmapped environments.
Innovation Solution
A method and device that utilize a base map and base segments with characteristic features to generate map data, allowing for reduced data processing and transmission by assigning base segments to positions in the base map, enabling the motor vehicle to establish its location and create or augment maps efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complete pre-existing maps are used for all environments, then location establishment accuracy is improved, but data volume and processing requirements increase significantly
Solution Approach 1:
The patent segments the map data into a base map containing only essential structural information (walls, pillars, permanent features) and separate dynamic objects (vehicles, pedestrians, temporary structures). This segmentation allows the system to maintain high location accuracy through the base map while reducing overall data volume by excluding unnecessary dynamic elements from the stored map data.
Solution Approach 2:
The patent extracts and removes dynamic objects and temporary features from the stored map data, keeping only the static base map information. This extraction process reduces data volume significantly while preserving the essential reference framework needed for accurate location establishment, as dynamic objects are detected and tracked separately during operation.
2Reliability
If complete pre-existing maps are created for all environments, then map reliability is improved, but time and resources for map creation increase
Solution Approach 1:
The patent performs preliminary action by pre-processing and storing only the essential base map structure (permanent walls, pillars, fixed features) before actual navigation operations. This preliminary structuring of map data establishes a reliable reference framework in advance, while allowing rapid adaptation to new environments by adding only necessary dynamic elements during operation, thus reducing overall map creation time.
Solution Approach 2:
The patent applies partial action by creating maps with only the essential elements needed for location establishment (base map structure) rather than complete detailed maps of all environmental features. This partial mapping approach reduces map creation time and resources while maintaining sufficient reliability for navigation, as additional details can be added or detected in real-time during operation.
3Loss of information
If extensive data processing is performed for map creation, then map completeness is improved, but processing efficiency decreases
Solution Approach 1:
The patent extracts only the essential base map elements (permanent structural features) from the complete environmental data, separating them from dynamic objects and unnecessary details. This extraction maintains sufficient map completeness for location establishment while dramatically improving processing efficiency by reducing the amount of data that requires extensive processing and storage.
Solution Approach 2:
The patent segments map data processing into two distinct stages: initial base map creation processing essential structural elements, and operational processing that detects and tracks dynamic objects. This segmentation improves processing efficiency by handling different types of data with appropriate processing methods, while maintaining map completeness through the combination of base map and dynamically detected elements.
Data Source
AI summary
A method for creating or augmenting a map for a motor vehicle, wherein the motor vehicle establishes its location in a surrounding environment by comparing environment data acquired by at least one sensor with map data stored in the map. The method provides a base map of a surrounding environment of the motor vehicle; provides at least one base segment, wherein the at least one base segment has at least one characteristic feature; and creates or augments the map by generating map data, wherein the map data is generated by a map creation unit by assigning the at least one provided base segment to an associated position in the provided base map. Also disclosed is a corresponding device.