Intersection data processing method and device of electronic map

Abstract

The invention discloses an intersection data processing method and device for an electronic map, relates to the technical field of electronic maps, and can solve the problem of serious distortion of an intersection drawn in the electronic map in the prior art. The method comprises the following steps: determining two main directions when an external road of an intersection passes through the intersection; determining the outermost starting point in the main direction according to the directed distance from the starting point of the buffer line used for describing the outline of the intersection and road connection area to the straight line where the main direction is located; intersection lines passing through the outermost starting point and extending in all the main directions intersectwith side lines of an external road to obtain intersection points; if the intersection point is closer to the outside than the outermost starting point in the main direction delayed when the intersection point is solved, adjusting the buffer line of the external road to which the intersection point belongs based on the intersection point and the position relation between the intersection point andthe vertex of the buffer line on the same side as the intersection point in the buffer lines of the external road to which the intersection point belongs; and adjusting the buffer line of the intersection line into a straight line passing through the intersection point. The method is mainly suitable for scenes where intersections are drawn in the electronic map.

Description

technical field [0001] The invention relates to the technical field of electronic maps, in particular to a method and device for processing intersection data of electronic maps. Background technique [0002] An electronic map is a digitally stored and consulted map based on computer technology. It can not only recommend the best walking route for users, but also has functions such as navigation and road condition reminders. Moreover, in order to enhance reality and allow users to experience road information more intuitively, the two-dimensional map has gradually developed into a three-dimensional map. [0003] In the road network data, it often happens that a certain pair of on- and off-line roads is at a certain intersection and is a two-way road. The usual drawing method for this road situation is to use three triangular intersection lines at the intersection to guide the upper and lower road pairs to the opposite two-way traffic road. If such road data is directly used ...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the intersection data processing method and device of the electronic map provided by the present invention aim to solve the problem of serious distortion of the intersection drawn in the electronic map in the prior art

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