Three-dimensional geographic information platform and topographic data processing method thereof

Abstract

The invention discloses a three-dimensional geographic information platform and a topographic data processing method thereof. The platform comprises a network system layer, a data layer, a supporting layer, an application layer and a presentation layer; the application layer comprises a computer network and a hardware platform, and the safety of the computer network is guaranteed; the data layer is a natural resource and geographic space information data resource center; the supporting layer is a basic platform for operation and management of a space database and a model database; the application layer is a supporting layer-based industry application module integration platform; the presentation layer comprises WFS, WMS, WCS and a browse layer. A three-dimensional model used in the invention is formed by third-party professional modeling software, and also, the software can be used for forming simple three-dimensional model scenes, namely, a large area of simple three-dimensional scenes can be fast generated by adding a height field and a layer height field into attribute information according to polygon files in data line pictures.

Description

[0001] technical field [0002] The invention relates to the technical field of image processing, in particular to a three-dimensional geographic information platform and a terrain data processing method thereof. [0003] Background technique [0004] The current 3D software for digital cities mainly focuses on the effect of 3D virtual reality. Compared with the spatial information of data, the query and analysis support is not enough; the support for massive 3D data is not enough. The current domestic digital city construction platform is not suitable for massive There are still many deficiencies in the support of precise 3D models, and the price of the software is relatively high, resulting in a relatively high cost of 3D digital city construction. [0005] In addition, a typical digital city construction often involves rich data resources, including high-resolution remote sensing images, DEM, and rich-content thematic map data, but these information are often not effecti...

AI Technical Summary

Problems solved by technology

[0004] The current 3D software for digital cities mainly focuses on the effect of 3D virtual reality. Compared with the spatial information of data, the query and analysis support is not enough; the support for massive 3D data is not enough. The current domestic digital city construction platform is not suitable for massive There are still many deficiencies in the support of the precise 3D model, and the price of the software is relatively high, resulting in a relatively high cost of 3D digital city construction

[0005] In addition, a typical digital city construction often involves rich data resources, including high-resolution remote sensing images, DEM, and rich-content thematic map data, but these information are often not effectively used after the system is set up. , if we can assist users to effectively organize, manage, and utilize these data, it will definitely produce huge social and economic benefits

After careful investigation and analysis, Nanfang Digital believes that there are two main reasons why this part of data cannot be reused: 1. The system itself lacks sufficient spatial analysis capabilities, so although there is data, it is difficult to use

This is a hard limitation of the system, but it can be solved by introducing more GIS spatial analysis methods and tools; 2. Spatial information data acquisition is incomplete, and there is a lack of necessary spatial information acquisition support for a large number of fine models, resulting in spatial analysis. The coarse model expansion with complete spatial information cannot be applied to the fine model. This is a soft limitation of the data and new development work must be carried out

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