虚拟环境中面向灭火指挥的火场信息可视分析

doi:10.16182/j.issn1004731x.joss.22-1534

摘要/Abstract

摘要：

针对森林火灾现场指挥的需求，综合分析地理环境、气象条件、森林资源和林火行为等灭火指挥所需信息，设计实现了在虚拟林火环境中的数据可视化可视分析方法。使用王正非-3D混合元胞自动机模型模拟林火蔓延过程；采取差时方法预测林火蔓延行为；实时捕捉不同兴趣域内环境数据的变化，结合多视图面板及图层叠加的方法，构建火场信息可视分析模块。通过调整虚拟林场的环境参数，对不同场景下的林火蔓延过程进行模拟仿真，并对火场信息进行可视化可视分析。实验结果表明：该方法能够在一定条件下较准确地预测林火蔓延行为，还可以较全面地描述火场信息。

关键词: 三维虚拟环境, 林火蔓延模型, 可视化, 可视分析, 林火仿真

Abstract:

Aiming at the demand of forest fire fighting command, the information required for the command, such as geographical environment, meteorological conditions, forest resources and forest fire behavior are comprehensively analyzed, and the data visualization visual analysis method in the virtual forest fire environment is designed and realized. Wang Zhengfei-3D mixed cellular automata model is used to simulate the process of forest fire spread and the difference time method is adopted to predict the forest fire spreading behavior. The change of environmental data in different interest domains is captured in real time, and the multi-view panel and overlay layers are combined to construct the visual analysis module of fire field information. The process of forest fire spread in different scenes is simulated by adjusting the environmental parameters of virtual forest scene, and the information of the fire field is visually analyzed. The experimental results show that the visual analysis method can not only more accurately predict the forest fire spread behavior under certain conditions, but also more comprehensively describe the fire field information.

Key words: 3D virtual environment, fire spreading model, visualization, visual analytics, forest fire simulation

中图分类号:

TP391

张本润,曹卫群 . 虚拟环境中面向灭火指挥的火场信息可视分析[J]. 系统仿真学报, 2024, 36(4): 1001-1016.

Zhang Benrun,Cao Weiqun . Study on Forest Fire Visual Analysis Method for Extinguishing Command in Virtual Environment[J]. Journal of System Simulation, 2024, 36(4): 1001-1016.

图/表 24

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color2	(250, 192, 61, 255)
color3	(73, 148, 196, 255)
color4	(18, 38, 79, 255)
color5	(108, 168, 175, 255)

坡向归一化[0, 1]	坡向方位(0~360°)	颜色名
(0, 0.25]	东(0~90°)	color1
(0.25, 0.5]	南(90°~180°)	color2
(0.5, 0.75]	西(180°~270°)	color3
(0.75, 1.0]	北(270°~360°)	color4
0	平地(0)	color5

风速值归一化[0, 1]	温度值归一化[0, 1]	颜色(R, G, B, A) [0, 255]
[0, 0.1)	[0, 0.1)	(0, 180, 255, 255)
[0.1, 0.2)	[0.1, 0.2)	(0, 255, 235, 255)
[0.2, 0.3)	[0.2, 0.3)	(0, 255, 45, 255)
[0.3, 0.4)	[0.3, 0.4)	(0, 255, 135, 255)
[0.4, 0.5)	[0.4, 0.5)	(45, 255, 0, 255)
[0.5, 0.6)	[0.5, 0.6)	(135, 255, 0, 255)
[0.6, 0.7)	[0.6, 0.7)	(225, 255, 0, 255)
[0.7, 0.8)	[0.7, 0.8)	(255, 185, 0, 255)
[0.8, 0.9)	[0.8, 0.9)	(255, 100, 0, 255)
[0.9, 1.0]	[0.9, 1.0]	(255, 0, 0, 255)

森林环境信息	颜色(R, G, B, A)[0, 255]
草	(20, 220, 0, 255)
灌木	(20, 100, 0, 255)
蕨类	(150, 200, 150, 255)
针叶林	(200, 255, 130, 255)
乔木	(0, 190, 100, 255)
冰带	(150, 255, 255, 255)
河流	(11, 172, 207, 255)
山洞	(184, 156, 96, 255)
火烧迹地	(40, 40, 40, 255)
火	(220, 60, 0, 255)
无植被	(200, 200, 200, 255)

可视化方法	应用范围	最小时延/ms	最大时延/ms	平均时延/ms
林火蔓延模拟	0~60 min	16.09	40.56	24.98
火线预测	0~100 min	22.82	343.93	58.33
环境数据(森林资源、风速、温度、高程、坡度、坡向)	1 024×1 024 (栅格单元)	283.07	418.82	312.29
风向标注	64×64 (栅格单元)	10.39	22.76	14.18
指定区域划分	10×10~1 024×1 024 (栅格单元)	11.05	360.44	125.18
火场信息	指定火线	11.96	25.80	16.22
统计图表	指定区域	20.50	43.50	28.99