3D visualization method and platform of spatial big data based on attribute separation
A large space and big data technology, applied in the field of 3D visualization of spatial big data, can solve the problem of reducing the rendering efficiency of the underlying 3D rendering engine, and achieve the effect of reducing the consumption of computer resources and reducing the consumption of computer resources
Active Publication Date: 2020-10-02
适普远景遥感信息技术(北京)有限公司
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However, with the continuous increase of spatial big data content and the increase of spatial big data categories (usually divided into data layers), the rendering efficiency of the underlying 3D rendering engine will also be reduced
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[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0041] This embodiment provides a three-dimensional visualization platform for big spatial data, which can realize three-dimensional visualization of big spatial data based on attribute separation.
[0042] 1. Data preprocessing
[0043] In order to establish a 3D visualization platform for spatial big data, the vector tile service is firstly preprocessed for vector spatial big data.
[0044] Tile Map Service of raster spatial data is a network map service based on tile organization data. It organizes map data in units of tiles that can calculate rules. When the network terminal executes the business application, the tile index is calculated through the tile division rules, and the scheduling data is requested from the network service center with the index parameter value, and accurate and fast scheduling access to the local map data...
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The invention discloses an attribute separation-based spatial big data three-dimensional visualization method and platform. According to the attribute separation-based spatial big data three-dimensional visualization method, the spatial big data three-dimensional visualization platform is established. A total quantity of data entering a three-dimensional rendering loop once is better controlled ina service mode of vector data tile blocks; through a data preprocessing optimization policy, the computer resource consumption of a CPU and the like for data conversion during three-dimensional rendering is reduced; through a rendering primitive data model optimization policy, the data tile blocks represented by active nodes in a scene are subjected to visibility judgment, and vector topology structure information of a data entity object is only fed back, so that a data throughput of spatial big data and a three-dimensional rendering frame rate are better balanced; and meanwhile, for meetingthe needs of service data interaction and analysis in the visualization scene, a solution for caching the data by an embedded spatial database is adopted, so that data separation is realized.
Description
technical field [0001] The invention relates to three-dimensional visualization of big spatial data, in particular to a method and platform for three-dimensional visualization of big spatial data based on attribute separation. Background technique [0002] Spatial database refers to the sum of application-related geospatial data stored by geographic information system on the computer physical storage medium, and is generally organized on the storage medium in the form of a series of files with a specific structure. The research on spatial databases began in the field of cartography and remote sensing image processing in the 1970s, with the purpose of effectively using satellite remote sensing resources to quickly draw various economic thematic maps. Due to the many defects in the representation, storage, management and retrieval of spatial data in the traditional relational database, the database research field of spatial database has been formed. However, the traditional d...
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IPC IPC(8): G06F16/29G06T17/05G06T15/00
CPCG06F16/29G06T15/005G06T17/05
Inventor 徐焕祥杨晓冬梁斯东
Owner 适普远景遥感信息技术(北京)有限公司