基于体绘制的全球云层数据可视化方法

Visualization of Global Cloud Data Based on Volume Rendering

云层数据的模拟研究是气象环境要素模拟中非常重要的一部分,对全球云层数据的三维可视化模拟也成为目前研究的一个热点和难点。为了更好地模拟风云三号卫星获取的全球云层数据,实现不同位置、不同角度、不同分辨率对全球云层数据进行观测,并提供对选定区域内大气要素的垂直三维剖面模拟,需要设计一种多数据叠加的三维全球云层数据可视化方法。基于实时获取的卫星观测资料,建立大气要素虚拟三维模型,使用类似光线投影法对云层进行体绘制,从而实现全球云层数据的三维可视化。实验结果表明,文中方法有理想的可视化效果,且渲染速度较快。

The simulation of cloud data is a very important part of meteorological environment simulation, and the 3D visual simulation of global cloud data is a hot and difficult topic in the current research. In order to better simulate the global cloud data acquired by FY-3 satellite, and observe the global cloud data at different angles and different resolutions, and provide a vertical 3D profile simulation of the atmospheric elements in the selected area, we need to design a 3D global cloud visualization method that multi-data superimposed. Based on the real-time satellite observa- tion data, we established the virtual 3D model of atmospheric elements, and drew the cloud by similar light projection method to realize the 3D visualization of global cloud data. The experimental results show that the method has theideal visual effect and the rendering speed is faster.