Map Dividing Line Revision Across Section Boundaries
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Solution Overview
Problem
Existing map data systems face issues in smoothly connecting dividing lines across section boundaries in high precision maps, leading to unnatural breaks or deviations in displayed dividing lines, which compromises the quality of the display.
Innovation Solution
A data revision device and method that acquire map data from adjoining sections, revise point data near section boundaries to ensure a minimum reference distance is maintained between corresponding end points of dividing lines, and output revised data to smoothly connect the dividing lines at boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If map data is divided into sections for storage and management, then data processing efficiency is improved, but dividing lines at section boundaries appear broken or deviated on display
Solution Approach 1:
The patent applies segmentation by dividing map data into multiple sections for storage and management, which improves data processing efficiency. However, it resolves the resulting display quality issue by introducing boundary position revision mechanisms that ensure dividing lines connect smoothly across section boundaries, thus maintaining visual continuity despite the segmented data structure.
Solution Approach 2:
The patent introduces an intermediary mechanism (boundary position revision process) that mediates between the segmented map data sections. This intermediary process revises the positions of dividing lines at boundaries to ensure they match and connect smoothly, thereby resolving the discontinuity problem created by data segmentation.
2Reliability
If point data positions at section boundaries are adjusted to match, then dividing lines connect smoothly on display, but deviation in actual road positions may be corrected
Solution Approach 1:
The patent applies local quality by implementing position revision only at specific locations (section boundaries) rather than throughout the entire map data. The boundary position revision process selectively adjusts only the dividing line positions at boundaries where sections meet, leaving the rest of the map data unchanged, thus maintaining overall position accuracy while ensuring smooth connections at critical boundary points.
Solution Approach 2:
The patent changes the position parameters of dividing lines at section boundaries through a revision process. When boundary positions do not match between adjacent sections, the system modifies the coordinate parameters of the dividing lines to ensure they align properly, thereby achieving smooth visual connections while minimizing changes to the overall map data.
3Reliability
If boundary positions are revised to ensure smooth connection, then dividing lines display continuously, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by performing boundary position revision during the map data generation and integration process, before the data is used for navigation or display. This advance revision ensures that dividing lines are pre-adjusted to connect smoothly across section boundaries, eliminating the need for complex real-time processing during actual map usage.
Solution Approach 2:
The system implements a self-service mechanism where the map data processing system automatically detects and revises boundary position mismatches without requiring external intervention. The boundary position revision process autonomously identifies discontinuities at section boundaries and corrects them, reducing the need for manual processing and simplifying the overall system complexity.
Data Source
AI summary
A data correction device includes a data acquiring part for acquiring map data including point sequence data showing a position of a first dividing line in a first section and point sequence data showing a position of a second dividing line corresponding to the first dividing line in a second section adjoining the first section; a position revising part for revising point data showing a position near a boundary of at least one of the first dividing line and the second dividing line so that the first dividing line and the second dividing line expressed by the point sequence data are smoothly connected at the boundary; and a position data output part for outputting point sequence data including point data showing revised positions of the dividing lines near the boundary.