Vehicle Map Integration Using Layered HD and SD Maps
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Solution Overview
Problem
Current vehicle navigation systems face limitations in storage capacity and processing speed due to the separate storage and management of standard definition maps (SD maps) and high definition maps (HD maps) for autonomous driving.
Innovation Solution
An apparatus and method for integrating a vehicle map by classifying a high definition map into multiple layers, converting it to a format compatible with a standard definition map, and generating an integrated map that optimizes storage capacity and facilitates map management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If standard definition map and high definition map are stored separately in individual controllers, then each map can be managed independently, but storage capacity is limited and processing speed is slowed down
Solution Approach 1:
The patent merges SD map and HD map into a single integrated map stored in one controller. The processor integrates the SD map with the HD map by classifying the HD map into multiple layers and converting it to a format compatible with the SD map, thereby unifying storage and improving processing speed while maintaining manageable complexity through systematic integration methods
2Measurement precision
If high definition map is stored separately, then precise autonomous driving information is available, but storage capacity is increased and processing speed is reduced
Solution Approach 1:
The patent segments the HD map into multiple layers (lane layer, SD match layer, localization layer, local match layer, and route layer) and integrates it with the SD map in a unified structure. This segmentation allows precise HD information to be stored efficiently within the integrated map, optimizing storage capacity while preserving measurement precision for autonomous driving applications
3Adaptability or versatility
If multiple separate maps are maintained, then specific map functions are preserved, but map management becomes complex and storage efficiency is reduced
Solution Approach 1:
The integrated map serves multiple functions simultaneously - it provides navigation capabilities from the SD map and precise autonomous driving information from the HD map through its layered structure. The unified map management system handles both standard navigation and advanced autonomous driving functions through a single integrated structure, reducing management complexity while maintaining functional versatility
Data Source
AI summary
An apparatus for integrating a map of a vehicle includes a processor to classify a high definition map, which is previously stored, into a plurality of layers, to change the high definition map to include a format to be integrated with a standard definition map, and generate an integrated map obtained by integrating the standard definition map with the high definition map and a memory to store the integrated map.