数字海洋系统的向量场可视化  

Vector Field Visualization of Digital Ocean System

作　　者：王少荣[1,2] 陈毅松[2,3] 汪国平[2,3] Wang Shaorong Chen Yisong Wang Guoping(School of Information Science and Technology, Beijing Forestry University, Beijing 100083 Beijing Research Center of Virtual Simulation and Visualization, Beijing 100871 Graphics and Interactive Technology Laboratory, Peking University, Beijing 100871)

机构地区：[1]北京林业大学信息学院,北京100083 [2]北京市虚拟仿真与可视化工程技术研究中心,北京100871 [3]北京大学图形与交互技术实验室,北京100871

出　　处：《计算机辅助设计与图形学学报》2016年第12期2114-2119,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：中央高校基本科研业务费专项资金(2015ZCQ-XX);国家自然科学基金(61232014;61421062)

摘　　要：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 visualizationunder 3D globe environment is an important task of digital ocean system. To integrate the vector fieldvisualization results into the 3D environment with geography information, a clustering based approach is proposedin this paper. First, a set of streamlines are generated to cover the vector field domain. Then the streamlinesare clustered into different group. Different post processions are adopted according to different visualizationapplications. A simple streamline representation of vector field is realized by extracting typical streamlinefrom 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 basedvisualization method is introduced by introducing the weighted matrix. Experiments show that the results of thealgorithm are satisfactory and efficient.

关 键 词：向量场可视化 流线聚类 向量场简化 数字海洋系统 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]