A marking method and device for map annotation in electronic map

Abstract

The invention provides an electronic map caption tagging method and device; the tagging method comprises the following steps: obtaining attribute information of linear figures and map captions surrounding the linear figures in the electronic map, wherein the attribute information comprises map caption tagging positions and map caption outer wrapping frame parameters; converting the linear figure into one or more point symbols according to preset pixel values; according to the map caption attribute information and point symbol pixel values, obtaining tapping positions of the map caption when the map caption and the point symbols are not overlapped in the electronic map, and tagging the map captions according to the obtained tagging positions. The method converts the linear figure into point symbols, and the map caption and point symbols are not overlapped, thus fast avoiding the map caption from the linear figure. The method uses point symbol avoiding strategy to uniformly deploy the map captions on two sides of the linear figure; the method and device are simple, high in efficiency, thus improving mapping efficiency, and the map can be clearer and tidy.

Description

technical field [0001] The invention relates to the field of electronic maps, in particular to a marking method and device for map notes in electronic maps. Background technique [0002] Map notes and linear features will cause linear features to be incoherent, and the drawing display is messy and unsightly (such as figure 1 shown). If the map annotations are arranged along both sides of the road, the entire map is virtually divided into multiple blocks by the road, and the map is neat and tidy, making it easier for the human eye to find and identify destinations. In the prior art, the intersection of lines and symbols is often used to determine whether avoidance is required, and the algorithm is complex, the amount of calculation is large, and the drawing efficiency is low. Contents of the invention [0003] The object of the present invention is to provide a method and device for labeling map annotations in electronic maps. By converting linear graphics into point symb...

AI Technical Summary

Problems solved by technology

In the existing technology, the intersection of lines and symbols is often used to determine whether avoidance is required. The algorithm is complex, the amount of calculation is large, and the efficiency of drawing is low.

Images