Study On The Simulation Of Realistic Terrain Scene

The third dimension is an important guideline to measure simulation effect in scene simulation, which is more and more regarded with the continuous development of software and hardware. This paper discusses that how to enhance the third dimension of scene simulation from the two aspects of terrain algorithm and texture mappings technique.On the facet of terrain modeling, a new metric is established to restrict the building of LOD(level of detail )terrain structure which is based on improved restricted quad-trees on the foundation of predecessors'work. Simultaneity, relevant data-structures and detailed algorithms for generating 3D terrain were presented. Three factors affecting the terrain details were considered, which are the view dependence, terrain precision and terrain roughness.On the facet of texture mapping, how to lower or eliminate the problems existing in small-texture mappings technique is discussed, such as the abrupt sense coming from the marginal transition between different texture, the repetition brought by the small texture mapped in the large scale area, the mosaic effect or flicker of texture brought by the change of viewing distance and so on. The physiognomy texture data of all the terrain are blended by the texture mixable factor through treating with terrain data, which improves the third dimension of terrain scene simulation.Finally, the scene simulation are carried out by OpenGL(Open Graphics Library), which validate that the method proposed in this paper enhance the third dimension of simulation and meet the rendering speed.