Method and system for constructing building three-dimensional model

A 3D model and construction method technology, applied in 3D modeling, image data processing, instruments, etc., can solve the problems of limited scope of application, 3D scene restoration of realism and low stereoscopic effect, etc.

Inactive Publication Date: 2016-11-23
中测高科(北京)测绘工程技术有限责任公司
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Problems solved by technology

[0004] The invention provides a method and system for constructing a three-dimensional model of a building, which solves the technical problems in the prior art that the restoration of three-dimensional scenes has a low sense of reality and three-dimensional effect, and the scope of application is limited

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  • Method and system for constructing building three-dimensional model
  • Method and system for constructing building three-dimensional model
  • Method and system for constructing building three-dimensional model

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Embodiment Construction

[0026] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as figure 1 As shown, a method for building a three-dimensional model of a building provided by an embodiment of the present invention includes:

[0028] Step 101, extracting three-dimensional point cloud data of buildings in the image sequence;

[0029] Step 102, generating a texture map of the building model;

[0030] Wherein, the position information in the three-dimensional point cloud data is specifically matched with the texture information of the image to generate a texture map of the building model;

[0031] Step 103, performing denoising processing on the 3D point cloud data;

[0032] Wherein, the denoising processing of the three-dimensional point cloud data may specifically include outlier noise point rem...

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Abstract

The invention relates to the field of computer graphics, and discloses a method and system for building a three-dimensional model. By extracting three-dimensional point cloud data of a building in an image sequence; generating a texture map of a building model; and analyzing the three-dimensional point cloud data Perform denoising processing; remove redundant 3D point cloud data based on the plane geometry of the position information data; calculate the optimal convergence of constraints in the image overlay model, segment the foreground layer from the background layer in the image, and use a solid color for the foreground layer Shading; generating 3D models of buildings. The three-dimensional reconstruction of the building by the point cloud data in the embodiment of the present invention has real three-dimensional information and pixel information, the reconstructed three-dimensional building model has a stronger sense of reality, and the restored geometric information is more complete and more accurate.

Description

technical field [0001] The invention relates to the field of computer graphics, in particular to a method and system for building a three-dimensional model. Background technique [0002] Buildings are an important part of the construction of smart cities. Many practical applications in smart cities are inseparable from 3D models of buildings, such as digital planning, virtual reality, and terrain surveying. Building 3D model construction has always been a research hotspot in the fields of computer vision and computer graphics. How to realize fast and highly automated building 3D model reproduction technology has attracted more and more people's attention. Based on the point cloud data of the building obtained by the photogrammetry method, the reconstruction of the 3D model is the modeling of the image information. According to the theory of multi-view stereo geometry, the reconstruction of the 3D model of the building is completed by using the point cloud data extracted from...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/30
CPCG06T17/30G06T2210/04
Inventor 郑君王继周范荣双曹萌张瑞楠陈丽
Owner 中测高科(北京)测绘工程技术有限责任公司
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