construction method of a three-dimensional space data model integrating a 3D GIS and a BIM

Abstract

The invention provides a construction method of a three-dimensional space data model integrating a 3D GIS and a BIM. The method comprises the steps of S1, constructing an overall model of a true three-dimensional model compatible with IFC and CityGML; S2, constructing a bottommost layer based on the open source OpenGL; S3, constructing a basic geometric layer which focuses on IFC; S4, constructingan intermediate topological layer which focuses on IFC and CityGML at the same time; And S5, constructing a top application layer which focuses on the CityGML. By means of the method, accurate modeling of the exterior of the building can be achieved, fine modeling of the interior of the building can be achieved, and seamless integration of the two can be achieved.

Description

technical field [0001] The invention relates to the field of geographic information science, in particular to a method for constructing a three-dimensional spatial data model integrating 3D GIS and BIM. Background technique [0002] The full name of 3D GIS is "three-dimensional geographic information system (that is, the abbreviation of 3D Geographic Information System)" (or "three-dimensional geographic information science (that is, the abbreviation of 3D Geographic Information Science)"). In 3D GIS, it focuses on the acquisition, organization, expression, analysis, visualization, etc. of three-dimensional spatial data (especially the data analysis function combined with three-dimensional spatial information), which has a wide range of applications in the real world. [0003] The full name of BIM is "Building Information Model Building Information Model" (or "Building Information Modeling Building Information Modelling"). In BIM, it focuses on the digitization of architect...

AI Technical Summary

Problems solved by technology

[0006] It is worth noting that although CityGML also defines 5 CityGML LODs (CityGML Levels of Details, that is, the level of detail described by CityGML), including CityGML LOD 0 (describes the region region and landscape landscape), CityGML LOD 1 (describes the city city and the region region) , CityGML LOD 2 (describing city districts and engineering projects), CityGML LOD 3 (describing outside architectural models and landmarks of architectural models), CityGML LOD 4 (describing interior architectural models of architectural models); however, most of the current 3D GIS software Only CityGML LOD 0 to CityGMLLOD 3 are involved in it, and almost no specialized 3D GIS software specifically involves CityGML LOD 4 (in other words, there is no specialized GIS software for the interior modeling of buildings, guessing the interior modeling of buildings not only consumes huge time , energy, financial resources, and the difficulty of implementing technology is relatively large, and its application value in the GIS field is limited)

Images