Flood routing situation three-dimensional dynamic visual display method based on WebGL

A 3D dynamic and flood technology, applied in the field of information technology, can solve the problems of inability to guarantee the rendering effect and low efficiency, and achieve the effect of improving rendering performance, improving rendering efficiency, and ensuring rendering effect

Active Publication Date: 2020-10-16
长江空间信息技术工程有限公司(武汉) +1
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Problems solved by technology

However, the above method has high rendering efficiency and low rendering effect, and cannot guarantee the rendering effect.

Method used

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  • Flood routing situation three-dimensional dynamic visual display method based on WebGL
  • Flood routing situation three-dimensional dynamic visual display method based on WebGL
  • Flood routing situation three-dimensional dynamic visual display method based on WebGL

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Embodiment Construction

[0074] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, and are only examples. At the same time, the advantages of the present invention are clearer and easier to understand through the description.

[0075] The core idea of ​​the present invention is: 1) build a realistic terrain based on the digital elevation model and high-resolution remote sensing image data superposition; 2) place the oblique photographic model of the current area on the terrain, and the model placement needs to be completely connected with the terrain elevation; 3) Use the shader technology of WebGL to add two kinds of virtual environment enhancement effects, weather and special effects, to simulate the external natural conditions in the process of flooding and increase the sense of reality; 4) complete the three-dimensional scene based on terrain data, oblique phot...

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Abstract

The invention discloses a flood routing situation three-dimensional dynamic visual display method based on WebGL. The method comprises the following steps: 1, selecting a three-dimensional visualization engine; 2, performing terrain and oblique photography model data processing and service publishing; 3, integrating a three-dimensional visual scene of the flood risk map; 4, performing flood situation data organization; and 5, performing flood inundation simulation three-dimensional visual display based on the WebGL technology. The method has the advantage of realizing three-dimensional visualdisplay of the two-dimensional flood routing process at the plug-in-free browser end.

Description

technical field [0001] The invention relates to the field of information technology, more specifically, it is a three-dimensional dynamic visualization display method for flood evolution numerical simulation results based on WebGL. Background technique [0002] The use of visualization technology to express various information of flood evolution has become an indispensable part of the field of flood information management. In order to be able to grasp the law of flood evolution more efficiently, many flood information including flood submergence range, water level, and area at different times need to be displayed intuitively. Many commercial organizations and related researchers in China have developed different flood data for different application backgrounds. Visualization system platform. [0003] At present, the 3D dynamic visualization of flood evolution is mainly based on OpenGL technology, using the C / S architecture (ie Client / Server, client / server structure). With ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05G06T15/50G06T15/20G06F16/957
CPCG06T17/05G06T15/20G06T15/50G06F16/957Y02A10/40
Inventor 宫留留杨坤范青松马瑞李晓飞
Owner 长江空间信息技术工程有限公司(武汉)
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