中文摘要：

三维可视化技术的发展日益成熟,本文以ERDAS IMAGINE软件为基础,利用Arc GIS软件将该地形图的高程数据转换为高精度的数字高程模型,通过影像的几何校正后,将DEM影像与该区域的多光谱影像图进行叠加,从而实现了三维地形的可视化。几何校正后的三维地形真实感更强,并在此基础上分析了三维地形可视化的应用,对于虚拟现实技术的迅速发展有着重要的意义。

英文摘要：

The development of 3D visualization technology is becoming more and more mature, this paper is based on ERD AS IMAG-INE software, using ArcGIS software converts the topographic elevation data to high precision digital elevation model, through the geo-metric correction of image, DEM images and the multi spectral images of region were superimposed, so as to realize the visualization of 3D terrain. Three dimensional terrain after geometric correction is more realistic. On the basis of this, the application of 3D terrain vi-sualization is analyzed, which is of great significance for the rapid development of virtual reality technology.