基于Internet的大范围三维地形实时渲染

基于Internet、分布式计算以及计算机图形学概念,提出了使用J2EE实现基于Web的大范围三维地形实时渲染的实现方法,分析了基于Web的三维地形渲染系统的开发过程中三维地表模型的建立、场景漫游,地形块拼接等环节的关键技术.这一方法集成了GIS、三维地形可视化、分布式计算以及网络通信等技术,允许用户通过标准Internet浏览器来应用远程功能对DEM数据进行可视化分析.

Real-Time Rendering of Large Terrain through Internet

As the rapid develop of network communication,distributed computing technologies and computer graphics,Web-based 3D visualization of geoscientific data is undergoing a great evolution.With the visualization systems and the tools available on the Internet,users will be able to access these tools and conduct visualization and analysis of the data via standard browsers.Also,the rendering of large scale of terrain has been deemed as the hotpot in the computer graphics for a long time,which takes a great part in the fields of GIS,flying simulator and video game etc.In this research,we are investigating the ways of developing a GIS-based 3D terrain visualization engine using J2EE and the key technologies in creating this engine such as 3D terrain building,scene roaming and the join of terrain blocks.This engine allows users to visualize,query,such as,terrain,image etc.,in the Internet environment.The fundamental concept of GIS-based 3D visualization over the WWW is to integrate GIS,visualization and Internet computing technologies.The goal is to bring the 3D visualization capability to users over the WWW.