摘要
针对传统的地下管网三维渲染方法步骤繁琐、数据量激增、输入输出流压力增大的问题,提出了一种考虑权重的管网索引构建及实时生成方法。该方法考虑了地下管网数据和普通城市三维模型的不同点,根据数据的不同类型及重要程度创建基于权重的四叉树索引,提高检索管网模型的效率,做到重要的管网模型先加载先渲染。在基于权重四叉树索引的基础上提出了一种地下管网的实时自动生成调度策略,减少了传统管网渲染显示需要提前生成三维管网模型的步骤,大大降低了管网数据的数据量,减少了输入输出流的压力。最后以实际数据做测试,证明所提出算法是可行高效的调度渲染方法。
In order to solve the problems of the traditional 3 Drendering method of underground pipe network,such as complicated steps,large amount of data and increasing pressure of input and output flow,this paper proposes a method of index construction and real-time generation of pipe network considering weight.This method takes the differences between the underground pipe network data and the general three-dimensional model of the city into account,creates a quadtree index based on the weight according to the different types and importance of the data,improves the efficiency of retrieving the pipe network model,and makes the important pipe network model load first and render first.Based on the weight quadtree index,a real-time automatic generation scheduling strategy for underground pipe network is proposed,which reduces the steps of traditional pipe network rendering and display that need to generate three-dimensional pipe network model in advance,greatly reduces the amount of pipe network data,and reduces the pressure of input and output flow.Finally,the actual data is tested to prove that the algorithm proposed in this paper is feasible and efficient.
作者
姚春雨
彭桂辉
段梦琦
YAO Chunyu;PENG Guihui;DUAN Mengqi(Aerial Photogrammetry and Remote Sensing Bureau of China National Administration of Coal Geology,Xi'an 710199,China)
出处
《遥感信息》
CSCD
北大核心
2019年第6期125-130,共6页
Remote Sensing Information
关键词
地下管网
四叉树
索引
三维模型
自动生成
underground pipe network
quadtree
index
three-dimensional model
automatic generation
