摘要
数字城市和智慧社会对综合管线信息三维轻量可视化的需求越来越多。针对全市大范围三维管线丰富的几何、材质与纹理等多细节层次信息三维轻量可视化难题,本文设计实现了基于Web GL的三维管线轻量可视化方法。该方法针对三维管线数据设计了动态组织调度策略,通过异步加载、可见性剔除等技术,把视点相关的管线和管点信息动态接入并实时生成三维模型,基于Web GL以GPU硬件加速的方式进行实时渲染绘制。典型城市综合管线信息管理应用实验表明,该方法能够在网络环境下各种终端上实现多种类型管线多细节层次三维模型的实时真实感可视化。
Digital city and smart society have a growing demand for 3 D lightweight visualization of integrated pipeline information.Aiming at the critical problems of 3 D visualization of multi-detail level information such as geometry,materials and textures,which is rich in 3 D pipeline model,this paper designs and implements the visualization method of 3 D pipeline models based on Web GL technology.This method provides a dynamic organization and scheduling strategy for large volume of 3 D pipeline data.Through asynchronous loading,visibility culling,the information of pipelines and pipe points related to the viewpoint can be dynamically accessed and 3 D model with proper detail is then generated in real time.Finally the real-time rendering based on Web GL with GPU hardware acceleration is implemented for the visualization of 3 D pipelines.The experiment of typical urban integrated pipeline information management shows that this method can realize the real-time lightweight visualization of multi-level 3 D models of various types of pipelines in various terminals under the network environment.
作者
刘畅
殷浩
张叶廷
谢潇
曹振宇
LIU Chang;YIN Hao;ZHANG Yeting;XIE Xiao;CAO Zhenyu(China Railway Eryuan Engineering Group Co,Ltd,Chengdu 610031,China;Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 610031,China;Jinhua City Pla~ming and Geographic Information Center,Jinhua 321000,China;State Key Laboratory of Information Engineering of Surveying,Mapping and Remote Sensing,Wuhan University,Hubei Wuhan 430079,China;Sichuan Hi-Target Spatial Information Technology Co,Ltd,Chengdu 610000,China;Key Laboratory for Environment Computation ＆ Sustainability,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;Basic Geographic Information Center of Sichuan Province,Chengdu 610041,China)
出处
《地理信息世界》
2018年第4期48-51,57,共5页
Geomatics World
基金
国家自然科学基金项目(41571392)资助
关键词
地下管线
WEBGL
三维可视化
轻量可视化
underground pipeline
WebGL
3D visualization
lightweight visualization
