Method for high-efficiency rendering of mass high-precision three-dimensional electric power equipment models in GIS

A power equipment, high-precision technology, applied in image data processing, 3D image processing, instruments, etc., can solve problems such as the inability to achieve efficient rendering of massive 3D models, and achieve the effect of saving capital investment, facilitating management, and shortening distances

Inactive Publication Date: 2014-08-27
HENNAN ELECTRIC POWER SURVEY & DESIGN INST
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Problems solved by technology

However, the advantage of this technology is that it is aimed at a single or a limited number of models. The ACIS 3D model organization rendering technology cannot yet achieve efficient rendering of massive 3D models, which is its main problem.

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  • Method for high-efficiency rendering of mass high-precision three-dimensional electric power equipment models in GIS
  • Method for high-efficiency rendering of mass high-precision three-dimensional electric power equipment models in GIS
  • Method for high-efficiency rendering of mass high-precision three-dimensional electric power equipment models in GIS

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Embodiment Construction

[0028] The present invention is aimed at two types of power equipment models of power plants, power stations, and electric towers, which have high density and high precision. Using programmable pipeline technology, window cutting technology and LOD technology, the three-dimensional space index inside the model is established to achieve model accuracy, visual effects and rendering Balance of efficiency.

[0029] The spatial distribution characteristics of the 3D power equipment model are: high local density, high precision, and overall discrete distribution. In the visualization process of massive 3D power models, based on the 2D and 3D integrated object index of power grid objects in the database, and the pyramid organization control scheme based on the power grid area, a spatial index in three directions is established to realize a control scheme that conforms to human visual experience.

[0030] Based on the above layering, the comprehensive rendering optimization of the pow...

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Abstract

Disclosed is a method for high-efficiency rendering of mass high-precision three-dimensional electric power equipment models in a GIS. Three-dimensional space indexes inside the models are established for the electric power equipment models by use of a programmable pipeline technology, a form cutting technology and an LOD technology so as to realize a balance among electric power equipment model precision, a visual effect and rendering efficiency. The specific steps are as follows: step one, simplifying the electric power equipment models; step two, performing grading management on the electric power equipment models, establishing space index rendering frequency optimization, and drawing electric power models with difference detail degrees at different observation distances and angles; and step three, reducing the workload of a rendering engine on a display interface by use of a shielding technology and the form cutting technology so as to realize the balance among the electric power equipment model precision, the visual effect and the rendering efficiency.

Description

technical field [0001] The field of application of the present invention is the power GIS-related field where massive high-precision three-dimensional power equipment simulation models are visualized and applied in large scenes. Background technique [0002] In recent years, the field of 3D model visualization technology has the following backgrounds. First, the 3D design software with ACIS core has been widely used in the world, and more than 350 customer applications use its technical core. The second is that the 3D rendering technology OPENGL and DirectX3D technologies have gradually matured, and are widely used in large-scale 3D game scene rendering, 3D architectural model rendering, and 3D equipment model rendering. The third is the gradual maturity of 3D digital earth technology, and a large number of 3D digital earth platforms have emerged, such as foreign excellent platforms such as Google Earth and WorldWind, and domestic excellent platforms such as Ev-Globe and Geo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00
Inventor 付华臣吴晓辉潘诚李文杰
Owner HENNAN ELECTRIC POWER SURVEY & DESIGN INST
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