A parallel scheduling method and system for three-dimensional spatial data

Abstract

The invention relates to the technical field of a geospatial information system, and provides a three-dimensional space data parallel scheduling method based on data content. The method comprises the steps of receiving three-dimensional space data scheduling requests of a plurality of clients; resolving a three-dimensional space data scheduling task through a scheduling task parallel resolving method based on the data content, generating a three-dimensional space data scheduling sub-task which can be executed in parallel; distributing a usable task executing thread and a database connection for the three-dimensional space data scheduling sub-task, carrying out parallel inquiry of the three-dimensional space database; recombining the obtained data inquired by the three-dimensional space data scheduling sub-task and then returning to the clients. The efficiency of scheduling different types of three-dimensional space data from the three-dimensional space database is improved, and the real-time visualization ability of a three-dimensional geographic information system (GIS) is also improved by resolving and parallel executing of the three-dimensional space data scheduling task.

Description

technical field [0001] The invention belongs to the technical field of geographic space information systems, and in particular relates to a parallel scheduling method and system for three-dimensional space data. Background technique [0002] The smooth visualization of large-scale 3D spatial data has always been the most basic requirement of 3D GIS. Whether the required data can be quickly dispatched from the large-scale 3D spatial database has become the key to ensure the fluency of 3D real-time visualization. When the amount of data in the 3D spatial database is smaller than the system memory or display device cache, the strategy of loading all the data into the memory and video memory at system startup is usually adopted to support the most efficient 3D visualization. However, as the scale of the 3D spatial database continues to increase, the system memory is far from being able to load all the data, which requires dynamic scheduling technology to dynamically load data ac...

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Problems solved by technology

[0005] The present invention provides a parallel scheduling method and system for three-dimensional spatial data, aiming at solving the problem of the low scheduling efficiency of current three-dimensional spatial data, which leads to the inability to quickly schedule the required data from large-scale three-dimensional spatial databases, thereby making it difficult to ensure the fluency of three-dimensional real-time visualization The problem

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