3D visualization method and system of natural resource data

Abstract

The present invention relates to an on line 3D visualization method and system of natural resource data. The method mainly includes a step of natural resource data organization and storage and a step of natural resource data processing and 3D visualization. The step of natural resource data organization and storage includes: according to natural resource data characteristics and service characteristics, dividing data types, and making the natural resource data as tile image data formed by a plurality of tiles by adopting a pyramid model, then encoding each tile, and establishing a tile data set based on an embedded database technology, storing the tile data set in database, and establishing a quadtree index of space for each tile. The step of natural resource data processing and 3D visualization includes site and position 3D visualization and natural environment object dynamic 3D visualization. The method achieves real time on line 3D rendering display for all kinds of natural resources and geographic space information data in a high-performance 3D visualization environment.

Description

technical field [0001] The invention relates to the technical field of natural resources and spatial geographic data applications, in particular to a method and system for three-dimensional visualization of natural resource data. Background technique [0002] The national natural resources and spatial geographic basic information database is one of the four basic national e-government information databases clearly proposed in the "National Informatization Leading Group's Guiding Opinions on my country's E-government Construction" (Zhongbanfa [2002] No. 17). The national e-government application and the public provide long-term, stable and standardized natural resources and spatial geographic basic information products and services, which have important reference value for the construction of cross-departmental e-government application systems, and at the same time improve the inter-departmental e-government cooperation mechanism It has positive exploration significance. The c...

AI Technical Summary

Problems solved by technology

[0005] When the general 3D visualization method is used for 3D visualization of natural resources and geospatial information data, the general 3D visualization method is obviously insufficient in terms of data storage organization, fast data update, and real-time expression of data characteristics, which cannot meet high performance. In order to meet the needs of online rendering and display in the 3D visualization environment, the existing general 3D visualization methods mainly have the following main problems:

[0006] 1) Although there are many kinds of general-purpose 3D visualization expression methods, the current general-purpose 3D visualization expression methods can only use a variety of different expression methods for each type of data according to the division of traditional data types; The data characteristics and business characteristics of different types of data in resources and geospatial information data have obvious deficiencies in the use of appropriate three-dimensional expression methods and expression content to reflect the characteristics of various types of data;

[0007] 2) In the existing data storage organization method, there is a lack of fast and effective information construction and transmission channels between various types of data and general 3D visualization expression methods, which cannot meet the requirements for direct high-performance 3D visualization expression of data;

[0008] 3) When the amount of data is huge and / or the data update frequency is high, it will bring severe challenges to the real-time and expressiveness of the three-dimensional visualization of the data

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