Intersection Drawing via Vector Line-to-Surface Expansion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for drawing high-definition intersections are either manually intensive, requiring professional knowledge and complex operations, or computationally simple but with poor presentation accuracy, making them inefficient for large-scale implementation.
Innovation Solution
A method that uses vector data to acquire road lines and surfaces through line-to-surface expansion, followed by drawing corner arcs using Bezier curves to create a high-definition intersection, reducing manual effort and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual drawing methods are used to create high-definition intersections, then drawing accuracy and detail quality are improved, but labor costs and operation complexity increase significantly
Solution Approach 1:
The patent replaces manual mechanical drawing operations with an automated computer-based system that uses vector data and mathematical algorithms (line-to-surface expansion, corner arc detection, Bezier curves) to generate intersection drawings automatically, eliminating the need for manual professional drawing operations while maintaining high accuracy
Solution Approach 2:
The patent creates accurate copies of real-world intersections by processing vector data through systematic algorithms that replicate the geometric characteristics of actual intersections, producing detailed drawings that match the original intersection geometry without requiring manual copying or tracing
2Productivity
If simple computational methods are used to draw intersections, then processing speed and efficiency are improved, but drawing accuracy and presentation quality deteriorate
Solution Approach 1:
The patent segments the intersection drawing process into distinct algorithmic stages: acquiring road lines from vector data, performing line-to-surface expansion to generate road surfaces, detecting corner arcs at intersections, and processing target side line pairs. This segmentation allows each stage to be processed efficiently by dedicated computational routines while collectively achieving high drawing accuracy
Solution Approach 2:
The patent transforms the drawing process by changing parameters from manual coordinate specification to automated geometric computation, using mathematical transformations (line-to-surface expansion, corner arc detection algorithms) that rapidly calculate precise intersection geometries, thereby achieving both high speed and high accuracy simultaneously
3Loss of time
If automated methods are used to draw intersections, then labor costs and time consumption are reduced, but drawing detail quality and realism may be compromised
Solution Approach 1:
The patent replaces manual drawing mechanics with automated computational mechanics that systematically process vector data through geometric algorithms, eliminating time-consuming manual operations while preserving detailed intersection characteristics through precise mathematical modeling of road surfaces and corner arcs
Solution Approach 2:
The system performs self-service by automatically acquiring road lines from vector data, autonomously performing line-to-surface expansion, independently detecting corner arcs, and automatically processing side line pairs without human intervention, thereby reducing both time consumption and labor costs while maintaining high detail quality through algorithmic precision
Data Source
Figure 1a~1c
Figure 2a
Figure 2b~3b
AI summary
Embodiments of the present disclosure disclose a method and a device for drawing an intersection, a server and a storage medium. The method includes: acquiring road lines of all branches at the intersection based on vector data of the intersection; performing a line-to-surface expansion based on the road lines to obtain road surfaces, and acquiring two side lines of each of the road surfaces; and determining target side line pairs based on side lines of the intersection, and drawing a corner arc at a corner of each of the target side line pairs. Each of the target side line pairs includes two side lines that do not belong to the same road line and are adjacent to each other.