一种高清晰度三维地形景观图的制作方法

Method for generating fine-grained 3D terrain maps

给出了一种静态三维地形景观图的制作方法,采用DEM内插建立地形的几何模型,使得DEM的采样密度和DOM的分辨率一致,并将DEM和DOM在像素级对准,直接进行逐像素透视投影和DOM纹理映射.该方法所使用的工具为常用的图像处理软件,主要针对小规模的三维地形景观图,对于非实时交互的应用,简单易行,且容易控制纹理映射,充分利用纹理信息,比较好地再现了地表的纹理细节.

A method is introduced for creating static 3D terrain maps.With this method, the DEM is resampled according to resolution of DOM via interpolation and aligned to the DOM image at pixel level. Terrain map can be created by perspective project and texture map directly at pixel level.Generally software is applied for image processing,for non-interactive and non-realtime application.It is easy and practicable,and provides good texture details.