基于OSG五维气象可视化软件的设计及实现  

Design and implementation of 5D meteor visualization based on OSG

作　　者：华文元[1] 王家润[1] 康亮[1] 聂芸[1] 

机构地区：[1]华北计算技术研究所,北京100083

出　　处：《计算机工程与设计》2009年第5期1282-1284,共3页Computer Engineering and Design

摘　　要：以前主要以二维气象云图作为各级气象部门服务研究与预测的依据,而新兴的三维气象模拟具有形象、动态等突出优点,三维气象可视化技术已成为国际研究的热点。在基于OSG五维气象可视化软件中主要功能模块分为:风力场动态模拟、填色图、等值线、体绘制。为满足实时性的需求,在风力场、填色图的绘制中,采用在场景图直接建立几何节点,在几何节点增加回调自定义画法的方法,对等值线的绘制采用缓存、抽点、内插的方法,对体的绘制采用在场景图直接建立XYZ三方向切片集几何节点,通过"最正对"来控制某方向切片集出现的方法。同时给出了软件的功能及实验结果。The weather service, as an important part of weather bureau, has been using 2d-nephogram for a long time. However, compared with 2d-nephogram, the 3d weather simulation has the advantages of visualization and dynamic. So, this technique is a hot research now. Based on OSG graphic engine, the developing platform, the architecture and the functions are outlined. Key technologies of SD meteor visualization are real-time processes of filling color by heights, drawing of contour and drawing of volume. At last, the next task about 5D meteor visualization is introduced.

关 键 词：气象 可视化 等值线 体绘制 场景图 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]