A visualization method of BIM model in 3D large scene

Abstract

The invention discloses a visual implementation method of a BIM model in a three-dimensional large scene, and relates to the field of building information model visualization. The visual implementation method comprises the following steps: firstly, establishing a three-dimensional space division grid according to the dimension of a range of all member models contained in each BIM model; then organizing the member models in each grid block to combine and generate a precise model of a single grid block; recombining and generating a simplified model with consistent shape and appearance according to vein use conditions by using the obtained precise model; and finally, loading and displaying the precise model or the simplified model of the BIM model in the three-dimensional large scene according to a selected display mode and an index number. According to the visual implementation method disclosed by the invention, on the basis of guaranteeing the application of the BIM model, all members of each BIM model are divided according to the three-dimensional space division grid by means of the space grid idea, and the members in the grid are merged to reduce the number of the models of the index and improve the loading efficiency of the BIM model.

Description

technical field [0001] The invention relates to the field of building information model visualization, in particular to a method for realizing visualization of a BIM model in a three-dimensional large scene. Background technique [0002] A BIM model (Building Information Modeling, building information model), such as a building BIM, includes a large number of component models. The component model includes all the entities that make up the building, including civil engineering windows, structural columns, floors, stairs, doors and other facilities, as well as various mechanical and electrical drainage, water supply, power supply, fire protection pipes and facilities, etc. Usually, the number of component models of a building BIM may be equivalent to the number of buildings in the entire urban area, usually reaching hundreds of thousands, millions or even tens of millions. [0003] When multiple BIM models are simultaneously displayed in a city-level 3D virtual scene, if each...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a method for realizing the visualization of the BIM model in a three-dimensional large scene, aiming at solving the problem of low indexing efficiency of the existing three-dimensional construction model, easy loading, and running Low efficiency and poor browsing experience

Images