Three-dimensional building model construction method applied to three-dimensional real estate information management

A technology of information management and construction method, which is applied in the field of 3D real estate model construction, and can solve problems such as inability to output 3D real estate models, cumbersome attribute assignment operations, and inability to realize automatic matching of two-dimensional household surfaces.

Active Publication Date: 2019-06-04
NANJING GUOTU INFORMATION IND
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Problems solved by technology

[0003] The patent "a three-dimensional real estate modeling method", application publication number CN 105513126A, application date 20160420, proposes a three-dimensional real estate modeling method, but this method cannot realize the settlement function, and cannot realize the automatic matching of the two-dimensional household surface , after extracting the two-dimensional household surface, the attribute assignment operation is cumbersome, and

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  • Three-dimensional building model construction method applied to three-dimensional real estate information management
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  • Three-dimensional building model construction method applied to three-dimensional real estate information management

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Embodiment Construction

[0024] Such as Figure 1-Figure 3 A method for constructing a three-dimensional real estate model applied to three-dimensional real estate information management includes the following steps:

[0025] Step 1: Extract the DWG format housing hierarchical household diagram from the real estate basic data, perform DWG format conversion, extract the SHP format two-dimensional household surface that has been closed by lines, and solve the topology of the DWG format housing hierarchical household diagram Error problem, to ensure the correctness of the topological relationship of two-dimensional spatial data. Merging the two-dimensional household surface and the corresponding balcony, assigning values ​​to the attributes of the two-dimensional household surface, and generating identifiers for closed and semi-closed balconies related to the building area in the suite;

[0026] Step 2: Carry out the automatic matching operation based on tangent space on the two-dimensional household su...

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Abstract

The invention discloses a three-dimensional building model construction method applied to three-dimensional real estate information management. The invention belongs to the technical field of real estates. According to the invention, the SHP format two-dimensional house surface is generated through conversion; constructing an association relationship between a two-dimensional house and a two-dimensional house meter house of the three-dimensional house model; taking the basic level surface as the geographic space information reference of the two-dimensional house surface corresponding to the house layer; Construction of three-dimensional building model, assigning a value to the three-dimensional building model, and outputting and applying the three-dimensional building model to produce three three-dimensional building models with different data organization modes so as to adapt to browsing and query of the three-dimensional building models with multiple scales and different LOD levels at a Web end, and realizing rapid construction of the three-dimensional building model with geographic space information so as to be applied to two-dimensional and three-dimensional integrated management of the real estate.

Description

technical field [0001] The invention belongs to the technical field of real estate, and in particular relates to a three-dimensional real estate model construction method applied to three-dimensional real estate information management. Background technique [0002] Real estate is an element of geographic information. The current house data management technology under the background of unified registration of real estate adopts discrete table and graph management, that is, the management method of real estate table is two-dimensional real estate table management method, and the management method of hierarchical household map With two-dimensional images or drawings with no spatial information and various standards, the data utilization rate is low, and the two-dimensional real estate table and the hierarchical household diagram of houses are not managed in the form of geographic information. The existing two-dimensional real estate table is expressed in the form of a two-dimen...

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
Inventor 周鑫鑫琚彪陈磊卜磊江洋
Owner NANJING GUOTU INFORMATION IND
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