LOD算法在3D地表模拟中的应用研究

Research of Application of LOD Algorithm to 3D Terrain Simulation

在大型可视化系统中需要对3D场景进行简化以获得理想的视觉效果和处理速度,层次细节技术是其中较为有效的算法之一,它能在保持较好的视觉效果的同时,减少数据量,提高系统的运行速度。通过介绍一个三维仿真系统中地表的生成过程,描述了层次细节技术中四叉树算法的实现方法,分析和验证了它的简化效果。

Level of Details technology is applied in real-time 3D graphics frequently. Complexity of scenes can be reduced by it preferably. Therefore the distortion is lessened and the request of real time is met. An animation system was introduced. Some LOD technology based on Quadtree algorithm was used in the system to simplify its terrain and an achievement of Quadtree LOD algorithm was introduced. Better effects on scenes simplification are shown by the experiment results.