Electronic map information labeling method and device and terminal

Abstract

The invention discloses an electronic map information labelling method and device and a terminal. The method comprises the following steps of: obtaining a labelling information set for representing semantic information of a to-be-labelled map element; determining a labelling position set corresponding to the labelling information set according to a contour of the to-be-labelled map element; determining a labelling form set of the labelling information set according to the labelling position set; and labelling the labelling information set according to the determined labelling form set. According to the method, the labelling form set is determined according to the labelling position set, so that labelling information of the to-be-labelled map element is taken as a whole to determine labelling forms, and the labelling information which is taken as a whole has a certain system consistency.

Description

technical field [0001] The invention relates to the field of electronic map data processing, in particular to an electronic map information labeling method, device and terminal. Background technique [0002] Electronic maps have increasingly become an indispensable part of people's social life, and electronic maps with high timeliness and rich information can provide great convenience for their travel. In order to enrich the information of the electronic map, the name of each map element (such as expressway, highway, etc.) can usually be supplemented and displayed in the electronic map, for example, "Beijing-Shenyang Expressway" and so on. [0003] In small-scale map scenarios, due to the high curvature complexity of linear features such as highways and highways, it is difficult to calculate the rotation angle of text marked along the line, and the legibility is poor. In the prior art, please refer to figure 1 , when labeling "Beijing", "Shen", "High" and "Speed" on the Be...

AI Technical Summary

Problems solved by technology

[0004] (1) Since the data of the tag information needs to be thinned before marking, the calculation method of the thinning processing is usually complex and the amount of calculation is large, which affects the timeliness of marking

[0005] (2) The difference in the rotation angle of each text in a complete annotation may be too large, and the legibility of the map is low

like figure 1 As shown, the text rotation angle directly uses the vertex of the linear feature as the reference line, and no effective method is used to filter the annotation layout with poor text rotation consistency

Images