基于结构化粒子模型的云可视化应用

云数据的三维可视化模拟一直是计算机图形学和气象科学领域的研究热点。提出了基于WRF模式数据的建模与渲染技术，以实现真实云数据三维可视化模拟。针对粒子系统建模复杂、实时性差的问题，首先通过计算云粒子之间的相互关系建立结构化粒子模型，实现WRF云数据的建模；然后利用光照模型和公告牌技术对建模粒子进行光照渲染和三维模拟，同时结合Imposter技术提高纹理绘制速度和效果。实验仿真结果验证了该方法在提高云数据的建模与渲染速度，提高云三维可视化的逼真度方面的有效性。

Application on cloud visualization based on structured particle model

The 3D virtualization of cloud data has always been the hotspot of computational graphics and meteorology. A method for data modeling and rendering based on Weather Research and Forecasting (WRF) was proposed to realize the 3D virtual simulation of real-world cloud data. Due to the complexity of particle system modeling and its poor real-time performance, a WRF cloud model was first set up, regarding the relationship between particles in the cloud system; further illumination rendering and 3D simulation were completed based on the illumination model and billboard technique; meanwhile, Imposter technique was introduced to speed up the texture mapping and improve the performance. The simulation results show that the proposed method owns the benefits of fast modeling and rendering of cloud data as well as good fidelity of the 3D virtualization model.