长江口北槽三维地形虚拟表达及其变化分析  

Virtual Representation of 3D Terrain and Its Change Analysis of the North Passage of the Yangtze Estuary

作　　者：董月娥[1] 周云轩[1] 姜晓轶[1] 

机构地区：[1]华东师范大学河口海岸学国家重点实验室,上海200062

出　　处：《计算机工程与应用》2006年第17期218-220,232,共4页Computer Engineering and Applications

基　　金：上海市科委科技攻关项目(编号:04DZ12049)

摘　　要：以长江口北槽为研究区域,利用1965年到2003年间12幅长江口数字化海图以及专业地形建模软件MultigenCreator,建立长江口北槽三维地形模型,实现基于虚拟现实建模语言VRML及浏览器插件Cortona的地形虚拟表达。在此基础上,对多年的长江口北槽深泓线进行对比分析,讨论北槽两岸沙岛的变迁过程。Taking the north passage of the Yangtze estuary as a study area,a 3D terrain model of the area is established with data digitized from 12 sea charts from 1965 to 2003 and aided by Multigen Creator,a professional tool for terrain modeling.A virtual representation of the 3D terrain model is achieved with VRML and browser package Cortona.Based on the modeling,spatial variations of the north passage thalweg from 1965 to 2003 are analyzed.And the evolving process of islands in both sides of the passage is discussed thoroughly.

关 键 词：长江口北槽 三维地形 虚拟现实建模语言 虚拟表达 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]