Research and implementation of multiscale dynamic terrain

Abstract

In the real-time rendering phase of terrain, there is the possibility of dynamic deformation of terrain, such as dynamic of surface elevation and color texture. In order to better effect the surface appearance, we use higher resolution to reflect the terrain deformation. This results in multiscale dynamic deformation in the terrain. In view of this situation, the maximum change region, namely the deformation region, is determined after the accuracy is improved. Then, we establish our own binary tree and DAG structure in the deformation region. Furthermore, the nested sphere of error metric is used to avoid the generation of crack and T-connection. Finally, in order to give priority to the deformation region, the radius of nested sphere of error metric is used to constrain the error radius. The experiment proves that the algorithm can well reflect the deformation effect of the deformation area and meet the requirements of real-time terrain rendering after the local region has multiscale dynamic deformation.