基于数据融合的DEM插值与可视化  

Research on DEM Interpolation and Visualization Based on Data Fusion

作　　者：赵凯[1] 胡大斌[1] 肖剑波[1] 

机构地区：[1]海军工程大学船舶与动力学院,湖北武汉430033

出　　处：《计算机仿真》2012年第7期144-146,213,共4页Computer Simulation

摘　　要：针对某航海训练仿真系统对三维地形实时性及逼真性的需要,提出了对DEM数据进行插值以提高数据的精度。在概略介绍空间插值原理及分类的基础上,分别着重介绍了克里金插值算法及改进谢别德插值算法的原理和特点。为了兼顾这两种插值算法的优点,克服单一插值方法的不足,提出了基于数据融合的插值方法。详细阐述了DEM插值的过程,并结合实例,利用SRTM3数据进行了测试,实现了DEM的可视化。仿真结果表明,与单独采用两种插值算法相比,基于数据融合所得数据插值效果较好,插值精度得到了明显的提升。With the rapid development of computer technology, the DEM data used by the simulation of three-di- mensional terrain require more precision in order to achieve better results. In this paper, the DEM interpolation based on data fusion was discussed. First, the concepts of spatial interpolation were introduced. Then the interpolation methods including Kriging and modified Shepard＇ s method were especially presented. And the interpolation method based on data fusion was proposed. At last, SRTM3 data were used as test data. The results show that the interpola- tion methods based on data fusion can improve the precision.

关 键 词：空间插值 克里金 改进谢别德法 可视化 融合 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]