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三维地形建模及可视化是GIS、计算机图形学、虚拟现实、数字摄影测量等领域的研究热点。在分析第四代交互可视化数据语言IDL的基础上,应用组件编程技术实现了高程数据和遥感图像进行地形三维合成的可视化实验系统,与传统方法相比,运用IDL进行地形建模及可视化具有较高的程序开发效率和较强的地形可视化效果。

3D terrain modeling and visualization are hot research topics in GIS,computer graphics,virtual reality,digital photogrammetry and other associated fields.Based on analysis of fourth generation interactive data visualization language,a 3D terrain visualization experiment software system combined with elevation data and RS image were designed with IDL using component techniques.Compared with traditional ways,this method can obtain higher programming efficiency and gain more real effect terrain.