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Registration method of geographic target and symbol graphics in vector geographic pdf map making

A technology of vector geography and geographic objects, which is applied in the field of registration of geographic objects and symbol graphics in the production of vector geographic PDF maps, and can solve problems such as inconsistent coordinate systems of synthetic geographic PDF maps and inconsistent coordinate systems of data sources

Active Publication Date: 2020-07-07
中国人民解放军61540部队
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for registration of geographic objects and symbol graphics in the production of vector geographic PDF maps, which solves the problem of inconsistency in the coordinate systems of two types of data sources when POM and DLG are used to quickly produce geographic PDF maps, resulting in the time coordinates of synthesizing geographic PDF maps System inconsistency problem, laying the foundation for rapid mass production of vector geographic PDF maps in POM and DLG data synthesis mode

Method used

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  • Registration method of geographic target and symbol graphics in vector geographic pdf map making
  • Registration method of geographic target and symbol graphics in vector geographic pdf map making
  • Registration method of geographic target and symbol graphics in vector geographic pdf map making

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Embodiment Construction

[0039] The present invention will be described in detail below in combination with specific embodiments.

[0040]The idea of ​​the present invention is to create and initialize a plane coordinate system from the DLG metadata when using POM and DLG data to make a vector geographical PDF map, reversely calculate and modify the parameter values ​​of the plane coordinate system according to the control points collected in the POM, Then write the geographic target and plane coordinate system parameters in the DLG into the PDF draft file. By merging the PDF draft file and the PDF format POM file, the generated vector geographic PDF map automatically completes the registration of the geographic target and the symbol graphic position (such as figure 1 shown). The method is to collect registration points on the POM when using POM and DLG to make a geographic PDF map, and restore the spatial reference system in the geographic PDF map through calculation. By restoring the spatial refere...

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Abstract

The invention relates to a registration method of geographical objects and symbol graphics in the production of vector geographic PDF maps. When using POM and DLG data to produce vector geographic PDF maps, a plane coordinate system will be created and initialized from DLG metadata, and controlled according to the data collected in POM. Point reverse calculation and modify the parameter values ​​of the plane coordinate system, and then write the geographic target and plane coordinate system parameters in the DLG to the PDF draft file, and merge the PDF draft file and the PDF format POM file, and the generated vector geographic PDF map is automatically completed Registration of geographic objects to symbolic graphic locations. The present invention utilizes two data sources of POM and DLG to make a vector geographical PDF map, and the geographic target position and symbol graphic position can be registered quickly, omitting the process of map symbolization and drawing editing, and significantly improving the POM without spatial reference and DLG with spatial reference Registration generates vector geographic PDF maps with accuracy and efficiency.

Description

technical field [0001] The invention relates to the technical field of geographical PDF map drawing, in particular to a method for registering geographical objects and symbol graphics in the production of vector geographical PDF maps. Background technique [0002] Geographic PDF map is a new type of map product between traditional electronic map and paper map. It not only has the characteristics of stable and reliable surface effects of paper maps, but also has the characteristics of free zooming and query analysis of traditional electronic maps, and it can be independently integrated with GIS systems, and can be applied to both professional and non-professional users. [0003] For the registration of geographic targets and symbolic graphics in the production of vector geographic PDF maps, you first need to be familiar with the following two types of data: ① POM (Publication Original of Map) refers to the original map data, which is the final result of map mapping for public...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B29/00
CPCG09B29/007
Inventor 何列松周校东谢鹏欧阳峰熊顺
Owner 中国人民解放军61540部队