Web-based visualization of spatial objects in 3DGIS  

作　　者：ZHANG LiQiang GUO ZhiFeng KANG ZhiZhong ZHANG LiXin ZHANG XingMing YANG Ling 

机构地区：[1]State Key Laboratory of Remote Sensing Science, Beijing Normal University, Beijing 100875, China [2]Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China [3]Department of Geodesy and Geomatics, School of Land Science and Technology, China University of Geosciences, Beijing 100083, China

出　　处：《Science in China(Series F)》2009年第9期1588-1597,共10页中国科学（F辑英文版）

基　　金：the National High-Tech Research & Development Program of China (Grant Nos. 2006AA12Z220, 2006AA12Z114);the National Basic Research Program of China (Grant No. 2007CB714403);the National Natural Science Foundation of China (Grant No. 60502008)

摘　　要：Adaptive rendering large and complex spatial data has become an important research issue in a 3DGIS application. In order to transmit the data to the client efficiently, this paper proposes a node-layer data model to manage the 3D scene. Because the large spatial data and limited network bandwidth are the main bottlenecks of web-based 3DGIS, a client/server architecture including progressive transmission methods and multiresolution representations, together with the spatial index, are developed to improve the performance. All this makes the application quite scalable. Experimental results reveal that the application works appropriately.Adaptive rendering large and complex spatial data has become an important research issue in a 3DGIS application. In order to transmit the data to the client efficiently, this paper proposes a node-layer data model to manage the 3D scene. Because the large spatial data and limited network bandwidth are the main bottlenecks of web-based 3DGIS, a client/server architecture including progressive transmission methods and multiresolution representations, together with the spatial index, are developed to improve the performance. All this makes the application quite scalable. Experimental results reveal that the application works appropriately.

关 键 词：data model progressive transmission spatial index adaptive visualization 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] P208[自动化与计算机技术—计算机科学与技术]