利用Java 3D实现Web上的真实感地形显示  

Representing a Realistic 3D Terrain with Java3D on the Web

作　　者：温永宁[1] 文斌[1] 张宏[1] 刘晓艳[1] 

机构地区：[1]南京师范大学地理信息系统江苏省重点实验室,江苏南京210097

出　　处：《江苏测绘》2002年第3期35-38,42,共5页Jiangsu Surveying and Mapping

摘　　要：三维真实感的图形技术是科学计算可视化,电脑动画和三维地理信息系统的核心。Java 3D是一个基于Java技术实现的跨平台的三维可视化编程接口。本文讨论了如何利用Java 3D技术实现具有真实感的地形显示。包括了按照高度值进行分层设色的渲染技术和实现以正射影像为基础的纹理技术。最后讨论了如何利用Java的Web支持把程序移植到Internet上,实现真实感地形在Internet上发布的方法。3D realistic image is a core technique of scientific visualization, computer animation, and 3D GIS. Java 3D is a Cross - platform API based on Java to implement 3D visualization. This article discussed the implementing method for the representation of terrain realistic image based on Java3D, such as the digital terrain model mapping, the blend of ortho - image and terrain data. The paper discuss how to romance the 3D image with the Z Value of the DTM, and to map the image to the DTM , so as to get to a realistic effect. With Java's ability to plug in Web as a applet, the software can transplant to Internet.

关 键 词：三维可视化 地理信息系统 JAVA3D 地形 电脑动画 正射影像 

分 类 号：P208[天文地球—地图制图学与地理信息工程] TP391.4[天文地球—测绘科学与技术]