面向BIM构件实例模型的层次聚类方法研究  

Research on hierarchical clustering methods for BIM instance models

作　　者：李泽宇 赵志刚 万远 陈俊杰 徐海 LI Zeyu;ZHAO Zhigang;WAN Yuan;CHEN Junjie;XU Hai(School of City and Environment,Hubei Normal University,Huangshi,Hubei 435002,China;Research Institute for Smart Cities,Shenzhen University,Shenzhen,Guangdong 518060,China)

机构地区：[1]湖北师范大学城市与环境学院,湖北黄石435002 [2]深圳大学智慧城市研究院,广东深圳518060

出　　处：《测绘科学》2023年第3期146-154,共9页Science of Surveying and Mapping

基　　金：国家自然科学基金面上项目(42171265);广东省自然科学基金面上项目(2022A1515012120)。

摘　　要：针对BIM机电模型数据组织调度效率不高和视觉一致性较差等可视化关键问题,该文提出了一种面向BIM构件实例模型的层次聚类方法。该方法首先基于Revit模型组织和几何相似性计算生成实例分组,其次根据构件实例模型空间结构特征进行空间划分以及层次聚类,最后结合实例化技术对BIM机电模型进行批量渲染。本文实验结果表明,优化后的BIM机电模型渲染平均帧率约为50fps,最低帧率稳定在30fps左右,能够较好地保证海量机电模型的可视效果。A hierarchical clustering method for BIM instance models is proposed to address key visualization issues such as inefficient data organization and scheduling of BIM electromechanical models and poor visual consistency.The method firstly generates instance groupings based on Revit models organization and geometric similarity calculation,secondly performs spatial division and hierarchical clustering according to the spatial structure characteristics of the instance models,and finally combines instantiation techniques to perform batch rendering of BIM MEP models.The experimental results of this paper show that the average frame rate of the optimized BIM MEP models rendering is about 50fps,and the lowest frame rate is stable at about 30fps,which can better ensure the visual effect of the massive MEP models.

关 键 词：BIM机电模型 几何相似性计算 实例分组 数据组织方式 层次聚类 

分 类 号：P208[天文地球—地图制图学与地理信息工程]