Method for matching electronic map in urban geographic information system

A geographic information system and electronic map technology, applied in the field of geographic information systems, can solve problems such as not paying attention to the point-line relationship of the electronic map, low precision, complex matching algorithm of the electronic map, etc.

Inactive Publication Date: 2011-03-16
TIANJIN UNIV
View PDF10 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electronic map processing methods mainly focus on electronic map compression, feature extraction, etc., and do not pay attention to the processing of the point-line relationship of th

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for matching electronic map in urban geographic information system
  • Method for matching electronic map in urban geographic information system
  • Method for matching electronic map in urban geographic information system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0051] In order to solve the above problems, reduce computational complexity, improve efficiency and improve accuracy, the present invention provides a method for matching electronic maps in urban geographic information systems. During the matching process of electronic maps, points, lines and topological structures on electronic maps are required related information, such as the adjacency information of road segments. However, due to the format of the electronic map itself and the problems in the drawing process of the electronic map, it is impossible to obtain these information directly by reading the electronic map file, or because the obtained electronic map topology will make the calculation of electronic map matching too large, it...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for matching an electronic map in an urban geographic information system and relates to the field of geographic information system. Through the method, the road section which is required to be calculated for matching the electronic map can be reduced to less than 50% of the whole road section required to be calculated before being pretreated by pre-treating the electronic map, the road section which is required to be calculated is further reduced to 1/N (N is the quantity of grids) of the whole road section based on a map storing structure of square grids, and the speed for matching the electronic map can be increased to 1/2N and the accuracy rating can be increased to above 90%.

Description

technical field [0001] The invention relates to the field of geographic information systems, in particular to an electronic map matching method in the urban geographic information system. Background technique [0002] With the development of urban geographic information systems, the requirements for electronic map matching are getting higher and higher. Due to the limitation of the map format of the existing electronic map itself and the defects in the drawing process, the preprocessing of the electronic map becomes a necessary work before the matching of the electronic map. The existing electronic map processing methods mainly focus on electronic map compression, feature extraction, etc., and do not pay attention to the processing of the point-line relationship of the electronic map itself. On the other hand, the existing electronic map matching algorithms are too complex, inefficient and inaccurate, and are not suitable for use in actual engineering projects. Contents o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01C21/30G01C21/32
Inventor 朱宁马寿峰贾宁郑亮王鹏飞
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap