Method and system for searching positions on topographic map of K-D tree based on curve
A search method and topographic map technology, applied in geographic information databases, other database retrieval, structured data retrieval, etc., can solve difficult and complex problems, and achieve the effect of easy implementation, small conformal deformation, and topology structure maintenance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0043] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0044] like Figure 5 As shown, a position search method based on a curve-based K-D tree includes the following steps:
[0045] S1, using the LCC projection method to generate a two-dimensional map from the geographic map data;
[0046] Geographic map data includes subdivision curves at different levels and latitude and longitude coordinate information of geographic boundaries;
[0047] like Figure 1a , Figure 1b As shown, the straight line maps generated by the quasi-conformal mapping method are respectively performed for part of the map of China and part of the topographic map of the United States, where θ is set s =15°, ε s = 0.013, get RL(1); set θ s =40°, ε s =0.013, RL is obtained.
[0048] S2, perform type classification processing on each feature edge contained in the generated two-dimensional map;
[0049] Specifically, S2.1, extract all curve segme...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com