摘要
基于虚拟现实(virtual reality, VR)技术构建泥石流灾害虚拟场景能够为灾害交互查询分析提供一种新方法。但现有的关于灾害场景可视化研究存在VR场景建模效率低下、交互模式单一和查询分析薄弱等问题,因此,提出了一种空间语义约束的泥石流灾害VR场景融合建模及交互方法,重点探讨了场景动态融合建模方法,利用符号增强表达和射线焦点获取技术设计了多种场景交互模式。并构建了原型系统,选择案例区域开展了试验分析。试验结果证明,利用所提出的方法能够实现泥石流VR场景的快速构建,并能够满足用户对灾害场景沉浸式感知以及灾情信息查询分析等需求。
The construction of debris flow disaster virtual scenes based on virtual reality(VR) technology provides a new method for interaction and analysis of disasters. However, there are many deficiencies in the visualization of disaster scenes, such as low efficiency of VR scene modeling, single interactive mode,weak query and analysis. Therefore, this paper proposes a fusion modeling and interaction method with spatial semantic constraint for debris flow VR scene, the fusion modeling method is addressed in detail. Multimode interaction scenes are designed by symbol augmented expression and the acquisition of ray focus technologies. A prototype system was implemented and a case study region is selected for experiment analysis. The experimental results show that the proposed method can efficiently construct debris flow VR scene, and meet the user requirements for immersive perception of disaster scenes and disaster information query and analysis.
作者
李维炼
朱军
张昀昊
付林
胡亚
尹灵芝
戴义
LI Weilian;ZHU Jun;ZHANG Yunhao;FU Lin;HU Ya;YIN Lingzhi;DAI Yi(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 610031,China; School of Civil Engineering and Architecture,Southwest Petroleum University,Chengdu 610500,China)
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2020年第7期1073-1081,共9页
Geomatics and Information Science of Wuhan University
基金
国家重点研发计划(2016YFC0803105)
国家自然科学基金(41801297,41871289)
中央高校基本科研业务费专项资金(2682018CX35)
西南交通大学博士研究生创新基金。
关键词
泥石流灾害
空间语义约束
虚拟现实
动态融合建模
多模式交互
debris flow disaster
spatial semantic constraint
virtual reality
dynamic fusion modeling
multi-mode interaction
