An incremental map update method based on national basic geographic information data

A national basic geography and incremental map technology, which is applied in digital data processing, special data processing applications, maps/plans/charts, etc., can solve the problem of insufficient incremental updating and mapping, and achieve fast mapping, obvious effects, and The effect of meeting the needs of drawing

CN103150398BInactive Publication Date: 2016-08-31WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-08-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a national fundamental geographic information data-based incremental map updating method. A geographic data-map making data-map data-based map making model is constructed, and incremental geographic data is combined to realize incremental map updating on the basis of basic state data. The method mainly comprises the following steps of: importing the incremental geographic data on the basis of the basic state data; performing semantic matching on the incremental geographic data, and extracting the incremental information of the incremental geographic data; performing incremental map making conversion on the incremental geographic data by combining the incremental information and basic state map making knowledge to generate incremental map making data; performing incremental symbolization and annotation and incremental graph and annotation conflict detection and processing on the incremental map making data by combining the basic state map making knowledge; and updating basic state geographic data on the basis of the incremental geographic data to finish the incremental map updating.
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Description

Technical field

[0001] The invention relates to the fields of electronic maps and digital map cartography, and in particular to an incremental map updating method based on national basic geographic information data. Background technique

[0002] Compared with the batch update of terrain database, incremental information update only provides users with incremental information instead of the entire new data set. In recent years, it has gradually become a frontier research and application topic in the international GIS academia and application department. The current research on incremental update generally focuses on the classification, expression, extraction, release and integration of incremental update information. For example, "Method for Extracting Incremental Information of Geospatial Data" (application number: 200910062280.8) describes the incremental extraction method of geospatial data; "Method for Publishing Incremental Information of Geospatial Data" (application number:...

Examples

Embodiment Construction

[0065] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0066] The system architecture running in the embodiment of the present invention adopts the existing technology, such as figure 1 As shown, it contains three parts: database, drawing system and end user. This structure utilizes existing computer database technology. In the embodiment, the database used is an Oracle database. According to the needs of computer cartography, the database includes four types: geographic database, cartographic database, map database and map expert knowledge base. The geographic database stores geographic data, that is, the original DLG (Digital Line Graphic) digital line drawing data and its metadata, which are the most basic data for computer map mapping; the cartographic database stores cartographic da...