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Indoor and outdoor integrated organization method for urban three-dimensional scene data

A 3D scene and data organization technology, applied in image data processing, electrical digital data processing, special data processing applications, etc., can solve the problem of affecting the efficiency of 3D visualization, lack of coherence, and unable to achieve dynamic scheduling of massive indoor and outdoor 3D scene data visualization requirements and other issues to achieve the effect of improving the efficiency of visual rendering

Active Publication Date: 2014-05-28
WUHAN UNIV
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Problems solved by technology

Due to the different visual organization of indoor and outdoor scene data, there is a lack of effective coherence in the process of roaming and switching between indoor and outdoor scenes. It is often necessary to rebuild the 3D rendering scene, including rendering data update and coordinate system conversion, which seriously affects the efficiency of 3D visualization.
The integrated organization technology of indoor and outdoor scene data is not very mature at present, and cannot meet the requirements of visual dynamic scheduling of massive indoor and outdoor 3D scene data

Method used

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  • Indoor and outdoor integrated organization method for urban three-dimensional scene data
  • Indoor and outdoor integrated organization method for urban three-dimensional scene data
  • Indoor and outdoor integrated organization method for urban three-dimensional scene data

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Embodiment Construction

[0025] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0026] please see figure 1 , figure 2 , the technical scheme adopted in the present invention is: a kind of indoor and outdoor integrated organization method of city three-dimensional scene data, at first define:

[0027] Entity: defined as an object, representing relatively independent 3D model monomers such as tables, chairs, and computers;

[0028] Region: Defined as a region, it represents the semantic division of rooms, corridors, and halls based on affiliation and the collection of model monomers contained in it. The Region that belongs to the indoor...

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Abstract

The invention discloses an indoor and outdoor integrated organization method for urban three-dimensional scene data. The method comprises the following steps: at first, extracting object data of Entity, Region and Portal from indoor three-dimensional model data, and performing 'Region-Entity' correlation and 'Region-Portal' correlation on the data to finally form an indoor three-dimensional scene data organization structure in a complete 'Entity-Region-Portal' organization form; afterwards, depending on a geographic position of a building model, correlating corresponding leaf node data in outdoor three-dimensional scene data organized in a quad-tree form, processing a leaf node into a Region object and connecting to indoor Region through a corresponding Portal object, thus realizing integrated organization of indoor and outdoor three-dimensional scene data. When being applied to indoor and outdoor integrated visualization of urban three-dimensional scenes, the method disclosed by the invention guarantees continuity of scene rendering, reduces data volume of real-time drawing and dynamic loading on each frame, and can obviously improve the three-dimensional rendering efficiency of a system.

Description

technical field [0001] The invention belongs to the field of computer applications, and mainly relates to an indoor and outdoor integrated organization method of urban three-dimensional scene data. [0002] Background technique [0003] With the continuous deepening of the construction and application of smart cities, indoor navigation and positioning applications are becoming more and more practical, and the large-scale outdoor roaming based on the three-dimensional city model is gradually developing towards the direction of indoor and outdoor integrated roaming. The scene data is organized in an integrated way to meet the requirements of overall data scheduling in the process of indoor and outdoor visualization, and to achieve efficient real-time 3D visualization. [0004] At present, the outdoor scene data mainly adopts the organization technology based on the quadtree, and the organization technology based on the BSP tree partition is used indoors. Due to the different...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06F17/27
Inventor 熊汉江戴雪峰朱泽洲郭胜
Owner WUHAN UNIV
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