Small-mesh accumulation area road selection method

Abstract

The invention discloses a small-mesh accumulation area road selection method which is applied to the technical field of geographic mapping. Starting meshes are redefined by simultaneously consideringedge characteristics and mesh density of the small meshes, and the starting meshes are changed into a pair of adjacent small meshes from one small mesh. Problems that a result of mesh elimination is very difficult to control and a spatial distribution structure of an original road network is very easy to change due to a fact that the starting mesh is located in the middle of the small mesh accumulation area are solved. Meanwhile, isolated sections are eliminated on the basis of a stroke connection sequence so that a space structure loss caused by some remaining strokes is avoided. According tothe method, the aggregated small-mesh area in the road network is reasonably selected so that the integrity and connectivity of the road in the area after the road is integrated are ensured.

Description

technical field [0001] The invention relates to the technical field of geographic mapping, and more specifically relates to a method for selecting roads in a small mesh gathering area. Background technique [0002] The road network on the map is an objective construction of the connectivity and distribution of the road network in the real geographical world, and is the skeleton element of the map. Usually, the road network has many levels, complex relationships, and forms a network. Therefore, how to realize the multi-scale continuous expression of the road network has always been a difficult problem. The road network is connected to each other through various road sections and forms a series of meshes. When performing multi-scale continuous expression, it is necessary to scientifically eliminate the meshes of the road network, so as to ensure that the connectivity and integrity of the road itself can be maintained during multi-scale expression , and can accurately reflect ...

AI Technical Summary

Problems solved by technology

However, the existing method is more suitable for road areas with isolated small meshes that account for the vast majority of the map, but there are still some small meshes gathered in residential quarters or large factories. Using the existing mesh-based road selection method will destroy the Typical spatial characteristics of roads in this type of area

Although the number of clustered small mesh areas on the map is small, unreasonable selection of them will still affect the overall quality of road selection to a certain extent

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