面向虚拟地球的三维气象场可视化方法  

A Virtual Globe-oriented Visualization Method for 3D Meteorological Fields

作　　者：陈静[1] 邹成[1] 黄吴蒙[1] 刘博洋[2] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 [2]武汉大学遥感信息工程学院,湖北武汉430079

出　　处：《武汉大学学报（信息科学版）》2016年第12期1563-1569,共7页Geomatics and Information Science of Wuhan University

基　　金：测绘遥感信息工程国家重点实验室专项;四川省测绘地理信息局科技计划项目(J2015ZC03)~~

摘　　要：三维气象场是一个多维变化的环境,可视化是研究其内在规律的重要方法。针对三维气象场的全球范围、多维多尺度、海量数据等特征,提出了基于体元对象的数据模型和多级体元索引机制,并在此基础上设计了面向三维气象场的可视化方法,包括基于箭头模型的矢量场可视化方法和改进后的基于三维纹理映射体绘制的标量场可视化方法。最后基于虚拟地球平台进行了可视化和时空检索分析实验。实验验证了该方法的可行性和有效性。Meteorological fields represent a multidimensional dynamic environment;therefore visualization is a means study inherent regularities in these phenomena.In this paper,aiming to visualize the worldwide,multi-dimensional,multi-scale,massive characteristics of meteorological field data,a voxel object-oriented data model and a voxel based multi-level indexing mechanism were designed.A visualization method for 3D meteorological fields is proposed,including an arrow model based visualization method for vector fields and improved 3Dtexture-mapping based volume rendering method for scalar fields.Visualization and spatio-temporal retrieval experiments on a Virtual Globe platform were carried out to demonstrate the feasibility and effectiveness of the proposed methods.

关 键 词：虚拟地球 三维气象场 数据组织 可视化 时空检索 

分 类 号：P231.5[天文地球—摄影测量与遥感] P237[天文地球—测绘科学与技术]