基于可视化特征提取的数字化城市BIM信息调度模型  

Based on the visual feature extraction of digital city BIM information scheduling model

作　　者：张邻[1] 

机构地区：[1]四川建筑职业技术学院,四川德阳618000

出　　处：《四川建筑科学研究》2016年第4期148-152,共5页Sichuan Building Science

基　　金：高等职业技术教育研究会"十二五"规划课题(GZYLX2015072)

摘　　要：数字化城市BIM信息量巨大且处于不断变化中,传统调度模型在功能上处于高度耦合状态,降低了数字化城市BIM信息调度效率和访问速度,耗时长。因此,提出一种基于可视化特征提取的数字化城市BIM信息调度模型,将重心特征作为雷达图的可视化特征,通过原点到重心的距离对其进行提取。对覆盖体积、重叠体积与形状进行了综合分析,将三维柯西值作为评价因子,采用全局优化法进行最优节点选择,用于插入新目标。通过三维空间聚簇分组算法,引入k-均值算法,依据提取的可视化特征完成节点分裂操作,完成R树的大范围动态优化,实现了数字化城市BIM信息调度。实验结果表明,所提模型耗时短、能耗低、所占内存较少、BIM信息调度性能高,具有较好的实用性。Digital city information plus the huge,in changing,the traditional scheduling model in highly coupled condition on the function,reduces the city BIM digital information scheduling efficiency and access speed,long time consuming. Therefore,put forward a kind of based on visual feature extraction of digital city information scheduling model,plus the focus features as radar map visualization,through the origin of the distance to the center of gravity. To cover the volume,the size and shape of comprehensive analysis of three dimensional cauchy value as evaluation factors,global optimization method is used to select the optimal node,is used to insert a new target. Through group 3D spatial clustering algorithm,k- means algorithm are introduced,based on visual characteristics of extraction of complete node split operation,complete R tree,a wide range of dynamic optimization,realized the digital urban BIM information scheduling. The experimental results show that the proposed model short time-consuming,low energy consumption,less memory,BIM information of scheduling performance is high,has a good practicability.

关 键 词：可视化特征提取 数字化城市 BIM 调度 

分 类 号：P208[天文地球—地图制图学与地理信息工程]