Simplification method, system and equipment of complex linear map and medium

Abstract

The invention provides a method, a system and equipment for simplifying complex linear map elements and a medium. The method comprises the following steps of: marking break points on a complex linear vector map by adopting a maximum noise threshold size estimated according to a scaling scale; removing the line segments and the corresponding break points on the complex linear vector map, wherein the length of the line segments between the break points and the adjacent break points is smaller than the maximum noise threshold size, and obtaining a preliminary screening map; starting from a break point at the starting end on the preliminary screening map, constructing a sliding circle by taking each break point as a center in sequence, and screening the break points according to the number of intersection points of line segments between the sliding circles and the break points to obtain a screened map; and smoothing the screened map based on a Bezier curve to obtain a simplified map. The problems that in the prior art, complex bending features of part of map elements are lost in the simplification process, and part of sharp bending and dense folding points are prone to being omitted in the recognition process, so that simplification is incomplete are solved.

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