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A lightweight and model technology, applied in special data processing applications, geometric CAD, etc., can solve the problems of low export efficiency and large export data, and achieve the effect of reducing occupied space and improving model export efficiency.
Active Publication Date: 2020-09-22
北京朔方天城智能科技有限公司
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[0005] The present invention provides a BIM model lightweight export method and system, the main purpose of which is to solve the problems of large export data and low export efficiency in the existing BIM model export method
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Embodiment 1
[0025] In order to explain the lightweight export method of BIM model provided by the present invention, figure 1 It shows the process of the lightweight derivation method of the BIM model provided by the present invention.
[0026] by figure 1 As shown, the lightweight export method of BIM model provided by the present invention includes:
[0027] Step S110: Traverse all the components of the BIM model to be exported to obtain attribute information of each entity component in the BIM model, and store the attribute information in the export database.
[0028] It should be noted that in the actual operation process, before traversing all the BIM models to be exported, it also includes initializing the data used to export the model. The initialization processing includes: setting the file handle and the fineness of the exported components, The file handle is used to call the function in the later operation. The fineness of the export component is used to standardize the visualization o...
Embodiment 2
[0055] Corresponding to the above method, this application also provides a lightweight export system for BIM models, and, figure 2 Shows the logical relationship of the BIM model lightweight derivation system according to the embodiment of the present invention, such as figure 2 As shown, the system includes:
[0056] An information acquisition unit, configured to traverse all components of the BIM model to be exported to acquire attribute information of each entity component in the BIM model, and store the attribute information in the export database;
[0057] The primary classification unit is used to analyze the shape of each entity part according to the attribute information, so as to divide the entity part into at least a simple entity part and a complex entity part;
[0058] A secondary classification unit, configured to classify the simple entity component according to the shape of the simple entity component, and classify the complex entity component according to the famil...
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Abstract
The invention provides a BIM model lightweight exporting method and system, and the method comprises the steps: traversing all parts of a BIM model, so as to obtain the attribute information of all entity parts in the BIM model, and storing the attribute information into an exporting database; analyzing the shape of each entity part according to the attribute information so as to at least divide the entity part into a simple entity part and a complex entity part; classifying the simple entity parts according to the shapes of the simple entity parts, and classifying the complex entity parts according to the family type and the attribute information of the BIM model; for each classification type, randomly selecting one component from the classification types as a reference component, and calculating a correction matrix of other components in the classification types and the reference component according to the attribute information; performing component attribute deduplication processingon the export database according to the correction matrix; and exporting the BIM model according to the exporting database. According to the technical scheme, the problems that an existing BIM exporting method is large in exporting data and low in exporting efficiency can be solved.
Description
Technical field [0001] The present invention relates to the technical field of image feature processing, in particular to a method and system for lightweight derivation of BIM models. Background technique [0002] With the rapid development of the Internet and mobile Internet, the display and operation requirements of BIM models on the web and mobile phones are becoming increasingly strong. The transmission, loading, and rendering of large-scale BIM models cannot meet the requirements using the original technical means. Browsers are affected by computing power and memory limitations, and desktop-based data organization and loading methods of models must be adjusted accordingly, that is, more use of 3D model lightweight technology for in-depth processing of models is required. Three-dimensional model lightweight mainly includes two aspects: model lightweight display and model file conversion. For example, the running memory of Google Chrome cannot exceed 1G under normal use. Tak...
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