Atomic Lane Road Characterization for Dynamic Route Planning
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Solution Overview
Problem
Existing road characterization technologies for self-driving systems are limited in adaptability, as they require changes to navigation maps when initial or target locations, routes, or lanes change, and cannot effectively describe multiple route methods or lane changes.
Innovation Solution
The method segments roads into atomic lanes based on lane connectivity and change feasibility, allowing for dynamic route planning without map changes, using a road characterization device that determines atomic lanes and lane association information to characterize roads and construct directed graphs for route representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-line description method is used to represent road routes, then the map structure is simple and easy to implement, but the adaptability is poor because the map must be changed when start point, target location, route or lane changes are required
Solution Approach 1:
The patent segments roads into atomic lanes based on lane connectivity and change feasibility. Each atomic lane represents a minimal road segment with specific connectivity properties, allowing the system to represent complex road networks as compositions of these atomic units. This segmentation enables flexible route planning by combining different atomic lanes without requiring map changes, resolving the contradiction between simple structure and high adaptability
Solution Approach 2:
The patent introduces dynamic route planning capabilities by representing routes as sequences of atomic lanes rather than fixed single-line descriptions. The system can dynamically select and combine atomic lanes to create different routes between start and target points, allowing adaptability while maintaining a static atomic lane database structure
2Ease of operation
If a single-line description method is used, then the implementation is convenient, but it cannot effectively describe multiple route methods or lane changes
Solution Approach 1:
By dividing roads into atomic lanes with defined connectivity relationships, the system can represent multiple route methods and lane changes through different combinations of atomic lanes. This maintains implementation convenience through standardized atomic units while enabling comprehensive description of various driving scenarios
Solution Approach 2:
The patent adds a dimensional aspect to route representation by introducing lane connectivity and change feasibility as separate dimensions. Instead of representing routes as single lines, the system uses multi-dimensional atomic lane structures that encode connectivity information, enabling description of lane changes and multiple routes while maintaining operational simplicity
Data Source
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AI summary
An objective of the present application is to provide a road characterization method, comprising: acquiring a target road, wherein the target road comprises one or more road segments; determining one or more atomic lanes corresponding to the road segments according to the road segment attribute information of the road segments; and determining lane association information related to the atomic lanes corresponding to the target road; wherein the one or more atomic lanes and the lane association information are used for characterizing the target road. The method can functionally completely describe objective connections of lanes within a target area, including lane connectivity and lane change feasibility.