System and method for adaptive electronic map symbolic

Abstract

The invention discloses a system for adapting the symbols of electronic map and a method thereof, for automatically refreshing the map symbols corresponding to the objects and areas in map when spatial information is refreshed. The system comprises a map symbol description module for organizing the geometric data, property setting data and later-binding interface data for each element of map symbols, and providing an adjusting interface for map symbol forms; a map symbol form adjusting module for obtaining element property characters of the map symbols after refreshing spatial information; a map symbol display module as the medium between the map symbol description module and the map symbol form adjusting module, for obtaining and outputting refreshed map symbols via the map symbol form adjusting module to corresponding map layers, thereby completing adaptive adjustment of map symbols.

Description

technical field [0001] The invention relates to the technical field of computer graphics, in particular to a user-oriented self-adaptive electronic map symbol system and method. Background technique [0002] Map symbols are the language of maps and the most important means of expressing spatial information in current electronic maps. How to synchronize the shape of map symbols with changes in spatial data display is a key technology for long-term exploration in the field of computer graphics. [0003] In the prior art, the aspects of electronic map symbols mainly focus on the description of map symbols and the computer automatic drawing of map symbols, such as: the comparison file of Chinese patent application No. 200710053790.X, which provides a computer automatic drawing of complex map symbols A drawing method; or a method of symbolizing map element instances without modifying the map symbol model. For example, the comparative document of Chinese patent application No. 200...

AI Technical Summary

Problems solved by technology

[0004] In the previous studies on the self-adaptive change of electronic map symbols, there are mainly thematic layer method and map element instance symbolization method. The following questions:

[0006] (2) The map element instance symbolization method can select a specific symbol for each feature, but this symbolization scheme is static and cannot realize the adaptive adjustment of map symbols

When the spatial information of a certain feature changes, it is necessary to artificially change the symbol or replace other map symbol templates to express the change of the spatial information, which obviously cannot adaptively express the changes in the spatial information of various features

[0007] In summary, the electronic map of the prior art does not take into account the adaptability of map symbols, and the electronic map cannot be automatically updated with changes in the display of geospatial data to accurately express spatial information in real time

Images