Manufacturing method, display method and system of vector numerical map

A digital map and production method technology, applied in the direction of electrical digital data processing, 2D image generation, image data processing, etc., can solve the problems of large amount of data, affecting customer experience, long transmission time, etc., to speed up the display speed and meet Query the effect of demand
CN101908060AInactive Publication Date: 2010-12-08็Ž‹ๅฎๅ…จ
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
็Ž‹ๅฎๅ…จ
Publication Date
2010-12-08
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a manufacturing method of a vector numerical map, which comprises the following steps of: dividing the map into a plurality of map blocks, and endowing each map block with a unique identifier; determining all feature points on each map block, which can show map information appearance, and prestoring position information data of the corresponding map block on which the feature points are positioned by taking one map block as a data unit; and making a drawing program for drawing the feature points on map information to form a pattern which is close to the map information appearance to be displayed, and displaying the pattern on a screen of a display terminal. The manufacturing method can overcome the defects of large data volume, slow transmission and the like of the numerical map in the prior art effectively so as to accelerate the display speed of electronic maps and meet the query requirements of users. The invention also discloses a display method and a system of the vector numerical map.
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Description

technical field

[0001] The invention relates to a method for making a digital map, and more particularly to a method for making a vector digital map, a display method and a system. Background technique

[0002] Digital maps are more and more widely used. Compared with traditional paper maps, digital maps have the advantages of wide coverage, easy search, modification and update.

[0003] Currently common digital maps (especially digital maps used in the Internet), the map information is mainly represented by image format files. The data volume of image format files is very large, requiring a large storage space, and it is difficult to achieve vector scaling. Because the map data for each zoom level is independent, adding a map level means adding a huge amount of data.

[0004] It can be seen that the existing digital maps have the disadvantages of large amount of data, difficulty in realizing vector scaling and high resolution. In Internet applications, a large amount of ...

Claims

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