Forest Virtual Simulation System Based on CAVE2

doi:10.13466/j.cnki.lyzygl.2019.02.018

Abstract

Abstract:

Combining CAVE2 immersive virtual simulation hardware with forest management requirements,a forest virtual simulation system based on CAVE2 was designed and realized,which provided a virtual simulation platform for forest management.The performance and characteristics of CAVE2 hardware system were analyzed,and the overall structure of the developed system was presented.The functions and realization flows of four system modules that were tree morphology and structure,forest landscape,forest growth and forest management simulation,were designed separately.The software system was developed by using the Unity three-dimensional development engine.Taking a sample plot of Chinese fir plantation as the experimental object,system application was carried out.The results showed that this method effectively realized the integration of CAVE2 virtual reality hardware system and Unity visual simulation software system,and could carry out the visual simulation of interactive forest management and growth prediction in immersive three-dimensional virtual simulation environment.This virtual simulation system with immersion and interaction can provide a new scientific research and application platform for forest management,and can be used to guide forest management practices.

Key words: CAVE2, unity3D, virtual simulation system, forest, design and realization

CLC Number:

S712

LI Yongliang, SHEN Kang, ZHANG Huaiqing, YANG Tingdong, LI Sijia, ZHANG Hong. Forest Virtual Simulation System Based on CAVE2[J]. FOREST RESOURCES WANAGEMENT, 2019, (2): 123-131.

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功能	具体内容
树木形态结构模拟	单轴、合轴以及不同冠形树木三维建模
森林景观模拟	多尺度地形、湖泊、道路等景观要素模拟
森林生长模拟	林木生长动态模拟
森林经营模拟	造林、采伐、补植等小班经营措施模拟

功能	具体内容
多源多尺度场景构建	基于不同数据源的样地、林分、小班、林班、林场、县域等多尺度森林场景林木渲染
自然景观要素模拟	LOD三维地形、草本、天空、湖泊、雨雪风雾等实时渲染
人工景观要素建模	森林防火道、房屋、指示牌等实时渲染

功能	具体内容
生长模型库	经验、机理以及混合生长模型
自然整枝动态可视化模拟	枝干、叶片的枯死、下落过程可视化
林分自稀疏可视化模拟	林分内林木枯损过程可视化

功能	具体内容
小班三维可视化管理	小班三维可视化模拟、小班三维可视化编辑
经营措施可视化模拟	经营措施定义、经营过程与结果模拟
经营方案可视化模拟	三维虚拟场景内可视化表达小班经营规划