A dynamic seamless modeling method for the global multi-scale terrain based on DQG

In order to realize dynamic and seamless modeling of the global multi-scale terrain efficiently, a corresponding real-time, dynamic, and seamless modeling method is presented based on the spherical DQG (Degenerate Quadtree Grid) in this paper. By using the thoughts of the view-dependent and the LOD (Level of Details), the new method not only eliminates the grids cracks between the same level or the different levels completely, but avoids the phenomena of T connection and steep as well. In the end, the experiment is done by using c# programing language and DirectX graphics interface. The results show that this method realizes dynamic seamless expression of the global LOD terrain data, and the increased…