基于OSG的大规模地形动态绘制应用研究

Application Research of Large-scale Terrain Dynamic Rendering Based on OSG

大规模地形的动态实时绘制技术是虚拟现实应用的核心,论文在分析金字塔模型和四叉树结构的基础上,研究了OSG的地形绘制原理,给出了OSG的地形分块方法;同时给出了高程数据、纹理数据的采集、处理和缓存方法,实现了大规模三维地形的实时绘制和动态漫游,具有一定的实用性及创新性。

The real-time rendering technology of large-scale terrain is the core of virtual reality application. Based on the pyramid model and quadtree structure,this paper studies the principle of terrain rendering of OSG,gives the terrain block method of OSG,and gives the method of terrain block of OSG. At the same time,this paper introduces the method of data acquisition,processing and caching of elevation data and texture data,realizes the real-time rendering and dynamic roaming of large-scale three-dimensional terrain. The research has certain practicability and innovation.