System and method for automatically building three-dimensional model of data of underground pipeline

Abstract

The invention belongs to the field of three-dimensional geographic information system data visualization, and particularly relates to a method for automatically building a three-dimensional model of data of an underground pipeline. The method comprises the steps of building a three-dimensional virtual geographical environment according to DEM data and DOM data, cleaning and organizing the data of the underground pipeline, establishing a pipeline node tree structure relation, building underground pipeline node joints and a pipeline three-dimensional meta model, automatically building the three-dimensional model of the underground pipeline according to the structure of the underground pipeline and the positions of nodes, in a virtual geographical scene, of the underground pipeline, building a massive underground pipeline model drawing mechanism based on the LOD, loading the three-dimensional model of the underground pipeline to the virtual geographical scene, and carrying out visualization and query management. The method for automatically building the three-dimensional model of the data of the underground pipeline has the advantages that modeling and model management are flexible and convenient, the model of the underground pipeline does not need to be built manually, expression and rapid visualization of the data structure of the underground pipeline are facilitated, and rapid building and flexible management of the model of the complex underground pipeline in the virtual geographical environment are achieved.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional geographic information system data visualization, and more specifically relates to a method and system for automatically constructing a three-dimensional model of underground pipeline data. Background technique [0002] On the basis of traditional geographic information system technology, 3D geographic information system has been widely used in digital cities and other fields with the characteristics of real 3D scene virtual reality, intuitive, real, visual and efficient. Underground pipelines are called the "lifeline" of a city and the "artery" of a city's healthy and safe operation, but it has the characteristics of great concealment and complexity. Establishing scientific, accurate, complete, visible and intelligent underground pipeline information management is an urgent need for urban planning, construction and management. In the actual construction of digital city management syste...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to realize the rapid construction and flexible management of complex underground pipeline models in a three-dimensional virtual geographic environment, the expression and rapid visualization of underground pipeline data structures, reduce modeling costs, and overcome the heavy workload and repetitive work of manual modeling of underground pipelines Multiple, complex defect management

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