Point-Based Rendering uses discrete and crowded point cloud to represent the surface of model, and it's goal is to reconstruct a continuous and equivalent surface from the point cloud.

This paper proposes a dynamic simplification algorithm for the terrain model based on the Triangle Subdivision Bi tree to realize continuous view dependent multi resolution rendering of terrain mesh.

The algorithm adopted continuous level of detail for fast rendering, and dynamically generated terrain meshes according to the roughness of terrain and information of the viewpoint.