Lane Map Generation Using Inverted Opposite-Lane Data
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Solution Overview
Problem
Conventional map generation apparatuses using only camera images struggle to efficiently generate maps with position information of white lines, as they rely solely on image recognition without comprehensive external data.
Innovation Solution
A map generation apparatus that includes a detection device and an electronic control unit with a microprocessor, which detects external situations and acquires map information from other vehicles traveling on opposite lanes, allowing for the generation of detailed lane maps by inverting the acquired opposite lane maps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only camera image recognition is used to generate maps, then the apparatus complexity is reduced, but the map generation efficiency and accuracy deteriorate
Solution Approach 1:
The patent combines map generation functions across multiple vehicles, where each vehicle generates maps for its current lane and shares them through communication. This merging approach allows the subject vehicle to acquire and utilize maps generated by other vehicles, significantly improving map generation efficiency without requiring the subject vehicle alone to process all map generation tasks.
Solution Approach 2:
The patent implements preliminary map generation by having vehicles generate maps for their current lanes in advance and share them proactively. The subject vehicle acquires these pre-generated maps from other vehicles before needing them, eliminating the need to generate maps from scratch and improving overall system efficiency.
2Power
If only camera image recognition is used to generate maps, then the processing load is reduced, but the map information accuracy deteriorates
Solution Approach 1:
The patent merges map information from multiple sources - the subject vehicle's own camera recognition and maps generated by other vehicles. This combination allows the system to maintain lower individual processing loads while achieving higher overall map accuracy through data fusion and verification across multiple vehicles.
Solution Approach 2:
The patent utilizes copies of maps generated by other vehicles as a supplement to the subject vehicle's own map generation. Instead of relying solely on the subject vehicle's camera processing, the system acquires and adapts map data from other vehicles, reducing processing load while improving accuracy through multiple independent observations.
3Adaptability or versatility
If maps are generated in real-time only by the subject vehicle, then the system independence is maintained, but the map generation time increases
Solution Approach 1:
The patent implements preliminary map generation where other vehicles generate and share maps in advance before the subject vehicle needs them. This allows the subject vehicle to acquire pre-generated maps immediately, significantly reducing map generation time while maintaining system independence through voluntary information sharing.
Solution Approach 2:
The patent introduces communication as an intermediary mechanism that enables map information exchange between vehicles. This intermediary allows the subject vehicle to independently acquire maps from other vehicles without direct physical interaction or centralized control, reducing time loss while preserving system independence.
Data Source
AI summary
A map generation apparatus including a detection device that detects an external situation around a subject vehicle, and an electronic control unit including a microprocessor and a memory. The microprocessor is configured to perform generating a first map for a current lane on which a subject vehicle travels, based on the external situation detected by the detection device, and acquiring a map information on an opposite lane map for an opposite lane generated by another vehicle traveling on the opposite lane opposite to the current lane. The microprocessor is configured to perform the generating further including generating a second map for the current lane corresponding to a point where the map information on the opposite lane map has been acquired, by inverting the opposite lane map.