一种大数据量实时交互地形模型算法的研究

The Research on an Algorithm for eal-Time Interacting Mass Dataset Terrain Model

介绍了一种基于任意网格数ＤＥＭ建立大数据量实时交互地形场景建模算法。该算法基于等腰直角三角形网，采用视觉参数相关ＬＯＤ控制，自适应选择对应的地形ＬＯＤ，利用基于局部误差计算的全局误差控制方法，控制地形曲面的变化，并结合良好的交互方式实现了大数据量地形场景连续ＬＯＤ的绘制。

In this paper, an algorithm for real-time interacting mass dataset terrain model is introduced. The algorithm is based on RTIN (Right-Triangle Irregular Network), and terrain LOD is selected adaptively using view-dependent LOD control method. The global error is bounded by computing the local error, and a friendly interactive manner is provided for continuous LOD.