Construction three-dimensional model building method and system

A 3D model and construction method technology, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as poor precision, low efficiency, cumbersome building construction, etc., achieve true and accurate construction and reproduction, reduce workload, cost saving effect

Active Publication Date: 2012-07-04
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] In view of this, it is necessary to provide a fast, convenient and accurate 3D model building method for the above-mentioned problems of cumbersome building construction, low efficiency and poor accuracy.

Method used

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  • Construction three-dimensional model building method and system
  • Construction three-dimensional model building method and system
  • Construction three-dimensional model building method and system

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Embodiment Construction

[0075] The technical solution and beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

[0076] figure 1 It is a flowchart of a method for building a three-dimensional model of a building in an embodiment, and the method includes the following steps:

[0077] S10: Obtain 3D point cloud data of the building.

[0078] In this embodiment, the vehicle-mounted laser scanning system is used to scan the building to obtain three-dimensional point cloud data. The vehicle-mounted laser scanning system can quickly and efficiently acquire the 3D point cloud data of the building, and the acquired 3D point cloud data contains more detailed information of the building.

[0079] In other embodiments, a scanning system in other ways (for example, airborne) may also be used to scan the building to obtain three-dimensional point cloud data.

[0080] S20: Pro...

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Abstract

The invention relates to construction three-dimensional model building method and system. The method comprises the following steps of: acquiring the three-dimensional point cloud data of a construction; processing the three-dimensional point cloud data, and extracting a plane in a point cloud; detecting and extracting the boundary of a planar point cloud; building the templates of the repeat units of the surface of the construction; combining and aligning the templates of the repeat units; forecasting the position at which each example of the repeat units by combining with users dragging the single or combined template; and carrying out fitting and accurate positioning on the examples to build the repeat units. In construction three-dimensional model building, through the simple drag interaction of the user, the search range of the rebuilding process is greatly reduced, the repeat units are automatically rebuilt, the working load of the rebuilding is reduced, and the precision and thespeed of construction building are improved, the construction model building is realized more simply, quickly, effectively, truly and accurately, and the cost is greatly saved.

Description

【Technical field】 [0001] The invention relates to the field of computer applications, in particular to a method and system for building a three-dimensional model. 【Background technique】 [0002] With the rapid development of remote sensing measurement, laser scanning, virtual reality and other technologies, as well as the concept of "digital earth", the construction of "smart city" has quietly emerged. Since Premier Wen Jiabao proposed "perceiving China" in 2009, the construction of "smart cities" has been carried out across the country. [0003] Establishing a 3D model of an urban scene is an important content and a necessary step in the construction of a "smart city", and 3D modeling of buildings in an urban scene is a key link in the construction of a "smart city". The data acquisition of 3D city model has always been a project with huge investment and complex technical requirements, and its technical level is an important restrictive factor affecting the efficiency of 3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00
Inventor 南亮亮陈宝权程章林
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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