Abstract: Based on analyzing the pollution diffusing model, aiming at the large-scale data is difficult to visualize, this paper puts forward key technologies of the water pollution diffusing 3D visualization, including the organization and management of 3D terrain, the river data pre-processing, grading the concentration of pollutants, temporal and spatial distribution of pollutants. Experimental result indicates that the system has a lower time and spatial expense. It is suitable for the water pollution diffusing 3D visualization.

Key words: large-scale, 3D visualization, organization and management, temporal and spatial distribution

摘要： 在分析污染物扩散模型的基础上，针对模型的大规模数据难以可视化的缺点，提出水污染物扩散模型三维可视化的关键技术，其中包括三维地形组织与管理、河道数据预处理、污染物浓度等级划分、污染物时空分布等关键技术。实验测试结果证明，该系统具有较低的时间、空间开销，适合水污染物模型真三维的可视化。

关键词: 大规模, 三维可视化, 组织与管理, 时空分布

CLC Number: 

• TP311.5