Model processing and loading optimization method based on BIM and GIS

Abstract

The invention relates to a BIM (Building Information Modeling) and GIS (Geographic Information System)-based model processing and loading optimization method. The method comprises the following steps: acquiring a BIM model; extracting plate beam column components of each floor from the BIM model; generating a floor projection plane of the corresponding floor based on the plate beam column component of each floor; the outer contour of the floor projection surface of each floor being inwards spaced by a certain distance to form a floor buffer area of the corresponding floor; the plate beam column components being classified into internal components and non-internal components based on the spatial position relation between the floor buffer area of each floor and the plate beam column components in the corresponding floor; internal components of all floors of the BIM model being stored to generate a building internal model, and non-internal components of all floors of the BIM model being stored to generate a building external model; extracting all the components from the building external model, combining all the components into a whole, and storing to generate a single building external model; and uniformly publishing the monomer building external model, the building external model and the building internal model of the BIM model as a visual data service.

Description

technical field [0001] The invention relates to a model processing and loading optimization method based on BIM and GIS. Applicable to 3D GIS and other 3D visualization fields. Background technique [0002] At present, the application of BIM technology is becoming more and more popular. Engineers often integrate BIM with GIS or other 3D visualization technologies to build and apply various 3D scenarios such as smart cities, smart parks, and smart buildings. However, in the application of BIM building information model, especially when dealing with large-scale scenes above the park level such as smart cities, since the building information model contains a large amount of geometric information and non-geometric information, if the original model is used for publishing and application, it will face huge models, Problems such as complex materials and too many triangular faces lead to low model loading efficiency, poor real-time rendering performance, and easy software shutdown...

AI Technical Summary

Problems solved by technology

However, in the application of BIM building information model, especially when dealing with large-scale scenes above the park level such as smart cities, since the building information model contains a large amount of geometric information and non-geometric information, if the original model is used for publishing and application, it will face huge models, Problems such as complex materials and too many triangular faces lead to low model loading efficiency, poor real-time rendering performance, and easy software shutdown; if the components or information of the original model are deleted to meet the application requirements of large scenes , then in the application of small scenarios below the park level, such as smart buildings, you will face the situation of incomplete information

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