Three-dimensional automatic modeling method and system

A modeling method and 3D model technology, applied in the field of 3D modeling, can solve problems such as long construction period, high cost, and city model cannot be updated in time, and achieve the effect of improving data quality

Pending Publication Date: 2021-11-16
贵州图智信息技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional manual modeling method also has long construction period and high cost, and the urban model cannot be updated in time

Method used

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  • Three-dimensional automatic modeling method and system
  • Three-dimensional automatic modeling method and system
  • Three-dimensional automatic modeling method and system

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Embodiment 1

[0051] refer to figure 1 , shows a flow chart of steps of a three-dimensional automatic modeling method provided by an embodiment of the present invention, as figure 1 As shown, the three-dimensional automatic modeling method may specifically include the following steps:

[0052] Step 101: Obtain a fitted 3D model of the building through fitting according to the model parameters of the building.

[0053] In the embodiment of the present invention, first, the fitting three-dimensional model of the building can be obtained by fitting, specifically, it can be divided into the following two ways:

[0054] 1. According to TDOM (True Digital Orthophoto Map, true orthophoto), DSM (Digital Surface Model, Digital Surface Model) and DEM (Digital Elevation Model, Digital Elevation Model), calculate the building outline and fit the building's 3D model

[0055] Specifically, import TDOM into the outline calculation model, and obtain the outline data of the building after calculation. Im...

Embodiment 2

[0090] refer to Figure 4 , which shows a schematic structural diagram of a 3D automated modeling system provided by an embodiment of the present invention, as shown in Figure 4 As shown, the 3D automated modeling system may specifically include the following modules:

[0091] The fitting model acquisition module 410 is used to obtain the fitting three-dimensional model of the building according to the model parameters of the building;

[0092] The texture extraction model acquisition module 420 is used to assign model UV coordinates and surface texture extraction according to the fitted three-dimensional model and the image data with an overlap greater than a threshold, so as to obtain a three-dimensional model after texture extraction;

[0093] The 3D model acquisition module 430 is configured to perform manual editing, optimization and texture merging on the 3D model after the texture extraction according to the building image associated with the building to obtain the 3D...

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Abstract

The embodiment of the invention discloses a three-dimensional automatic modeling method and system. The method comprises the following steps: fitting according to model parameters of a building to obtain a fitting three-dimensional model of the building; according to the fitting three-dimensional model and the image data of which the overlapping degree is greater than a threshold value, performing model UV coordinate endowing and surface texture extraction to obtain a three-dimensional model after texture extraction; and according to a building image associated with the building, carrying out manual editing, optimization and texture combination processing on the three-dimensional model after texture extraction to obtain a three-dimensional model of the building. According to the embodiment of the invention, the data quality of the three-dimensional data can be improved.

Description

technical field [0001] The invention relates to the technical field of three-dimensional modeling, in particular to a three-dimensional automatic modeling method and system. Background technique [0002] With the rapid development of industrialization and urbanization in our country, the 3D digital city has become an important symbol of the informatization level of a region or even a city. 3D digital city construction comprehensively uses 3D geographic information technology, computer visualization technology and database technology, takes urban 3D spatial data as the carrier, fully collects and integrates urban planning and construction information resources, and establishes a comprehensive system for the government, planning management departments, and construction units. The application management platform provides support and guarantee for the improvement of urban planning, construction, management and service level and the sustainable development of the city. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/10G06T17/05G06T15/04
CPCG06T17/10G06T17/05G06T15/04G06T2210/04
Inventor 黄勇肖让申勇智宋振波蔡玲孙涵李芙蓉路喜
Owner 贵州图智信息技术有限公司
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