Method for matching electronic map in urban geographic information system

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...

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 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.

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