数字海洋系统是海洋相关应用和研究中的有效工具，三维球体环境下的向量场可视化是数字海洋系统中的一项重要工作。文中将向量场可视化结果实时地融合在具有地理位置信息的三维环境中。首先生成覆盖向量场的流线集合。然后对流线集合进行聚类。最后对每一类流线按空间位置进行排序，选取代表性流线进行向量场简化；在每一类的起始位置处放置粒子，实现三维风场实时可视化；生成权值矩阵，对基于纹理可视化结果进行后续处理实现增强效果。实验结果表明，在三维球体环境下，文中算法效率高、绘制效果良好。%Digital ocean system is a useful tool for ocean application and research, and vector field visualiza-tion under 3D globe environment is an important task of digital ocean system. To integrate the vector field visualization results into the 3D environment with geography information, a clustering based approach is pro-posed in this paper. First, a set of streamlines are generated to cover the vector field domain. Then the stream-lines are clustered into different group. Different post processions are adopted according to different visualiza-tion applications. A simple streamline representation of vector field is realized by extracting typical streamline from the sorted streamlines of each group; By generating the particles from the start positions of each group, a real-time particle based visualization method is used to expose the wind feature; An enhanced texture based visualization method is introduced by introducing the weighted matrix. Experiments show that the results of the algorithm are satisfactory and efficient.
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