Objectives:Accurately describing and understanding the bridge construction process is of great significance to students'learning and field personnel's fine management.However,the bridge construction process involves a large number of objects,complex behaviors,and variable states,which leads to problems such as poor standardization and low cognitive efficiency in expression.Methods:This paper proposes a knowledge-guided three-dimensional visualization method of spatiotemporal narrative of bridge construction process.First,we construct a bridge construction knowledge map with"object-behavior-state"three-domain association by analyzing the bridge construction process,then break through the key technologies of narrative element analysis and matching,3D scene mapping and instantiation,and 3D dynamic visualiza-tion of spatiotemporal narrative.Finally,we develop a prototype system and carries out case study experi-mental analysis.Results:The results show that the correct rate of answering questions in the experimental group reaches 76.5％ ,which is 13.2％ higher than that of the control group;under the comprehensive per-spective of clarity,richness and comprehension difficulty,78.8％ of the personnel in the experimental group have good cognitive experience,which is 45.5％ higher than that of the control group.Conclusions:By accurately describing the bridge construction objects,features and interrelationships,the unified expre-ssion and association management of bridge construction knowledge map is realized,and based on this,the three-dimensional dynamic visualization expression of the bridge construction process is carried out by using spatiotemporal narratives,which effectively enhances the education level of bridge construction process cog-nition with the help of interactivity and immersion of three-dimensional scenes.
关键词
桥梁建造过程/时空叙事/三维可视化/知识图谱/知识引导
Key words
bridge construction process/spatiotemporal narrative/3D visualization/knowledge mapping/knowledge-guided
维普
万方数据