Map Construction Using Lane Geometry and Polyline Segments
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Solution Overview
Problem
The challenge in mapmaking technology is to achieve accurate map construction with minimal effort, balancing accuracy and cost effectively, particularly for navigation and autopilot systems.
Innovation Solution
A method and system for constructing maps that involve generating lane geometry data from polyline segments and creating lane content, utilizing a system with a processor and storage device to process raw image data into lane geometry and content, including visualization, data cleaning, polyline segment construction, lane geometry construction, and lane content generation circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional mapmaking methods are used, then map construction can be completed, but map accuracy is insufficient and construction effort is high
Solution Approach 1:
The patent segments the map construction process into distinct functional modules: polyline segment construction circuit, lane geometry construction circuit, and lane content generation circuit. Each circuit handles a specific aspect of map construction, allowing for specialized processing that improves accuracy while maintaining manageable complexity through modular design.
Solution Approach 2:
The patent replaces traditional mechanical or manual mapmaking processes with electronic data processing systems. By using circuits to automatically construct polyline segments, generate lane geometry data, and create lane content from image data, the system achieves higher accuracy without proportionally increasing construction effort.
2Manufacturing precision
If detailed lane geometry data is constructed for each lane, then map accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent divides lane geometry construction into discrete polyline segments that can be processed independently. Each polyline segment represents a portion of a lane, allowing the system to construct detailed geometry for each segment separately and then combine them, achieving high precision without overwhelming processing complexity.
Solution Approach 2:
The patent transforms complex lane geometry construction into a systematic process by introducing structured data representations. Lane geometry data is organized with specific data structures that capture spatial relationships, allowing precise construction through algorithmic processing rather than complex geometric calculations.
Data Source
AI summary
A method of constructing a map including a plurality of lanes and a system thereof are provided. The method includes: for each of the plurality of lanes, constructing corresponding lane geometry data based on a plurality of polyline segments, including constructing a general outline circumscribing the plurality of lanes and identifying an outline of each of the plurality of lanes based on the plurality of polyline segments and the general outline. Outline polyline segments as boundaries of the general outline are selected from the plurality of polyline segments.