Construction method of forest fire 3D visual scene for aviation fire training

A forest fire and 3D visual technology, applied in the field of aviation firefighting/computer simulation

Active Publication Date: 2020-10-09
BEIHANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for constructing a forest fire three-dimensional visual scene for aviation fire training, thereby solving the aforementioned problems in the prior art

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  • Construction method of forest fire 3D visual scene for aviation fire training
  • Construction method of forest fire 3D visual scene for aviation fire training

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specific Embodiment

[0081] The embodiment of the present invention provides a method for constructing a forest fire three-dimensional visual scene for aviation fire training, which is implemented by the following steps:

[0082] Step 1: Obtain the latitude and longitude information of the core simulation target area, obtain the height distribution map in the area, and build a DEM; obtain the high-resolution satellite image within the latitude and longitude range, map it into the DEM, and construct the helicopter fire fighting core activity area DTM;

[0083] Step 2: Obtain the latitude and longitude information and satellite pictures of the non-core simulation area, manually construct the DTM of the non-core area according to the elevation information of the terrain, and make a complete large-scale simulation 3D terrain together with the core simulation area;

[0084] Step 3: Construct the unburned tree model and the burned tree model; divide the core simulation area into a grid, plant the unburn...

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Abstract

The invention discloses a method for constructing a forest fire three-dimensional visual scene oriented to aviation firefighting training, and relates to the field of aviation firefighting / computer simulation. Compared with the existing related methods, on the basis of constructing a large-scale three-dimensional terrain environment, it ensures the highly realistic effects of details such as ground forests and flames, and provides a relatively simple method for the helicopter forest fire fighting training system that meets the requirements. vision system. This effect is achieved by dividing the core task area and non-core task area of ​​the terrain, replacing the traditional particle system with a random particle system, and using a relatively simple but effective dynamic model and surface texture replacement. Compared with existing similar systems, it solves the contradiction between large terrain, high fidelity and high running fluency. In practical applications, this method is not only suitable for the visual simulation of helicopter forest fire fighting tasks, but also can be extended to other similar simulation systems.

Description

technical field [0001] The invention relates to the field of aviation firefighting / computer simulation, and is applied to the construction of my country's aviation emergency rescue system, in particular to a method for constructing a three-dimensional forest fire scene for aviation firefighting training. Background technique [0002] Helicopter forest fire fighting is a highly dangerous and technically difficult activity, but because of its better fire fighting effect, it has been valued by governments of various countries. Helicopter forest fire fighting activities require the close cooperation and skilled operation of the entire helicopter crew, and necessary training is usually required. However, such large-scale disaster scenarios like forest fires are difficult to reproduce in normal times, and the operating cost of aircraft is very high. Therefore, in terms of training for complex tasks, the industry generally uses virtual simulation technology for training. [0003] ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/05G06T19/00
CPCG06T17/05G06T19/006
Inventor 刘虎刘宇轩王宁
Owner BEIHANG UNIV
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