LOD模型生成算法研究

细节层次模型(LOD)是指对同一个场景或场景中的物体，使用具有不同细节的方法得到一组模型，供绘制时使用。建立LOD模型能很有效地降低数据量和复杂度，实现三维场景的实时处理。文中通过对LOD模型生成算法进行分析，研究了基于点删除算法的多分辨率模型生成方法、递进网格的简化算法、基于二次误差度量的几何简化算法等三种算法的实现步骤和误差计算方法。为以后在地形可视化、虚拟现实等领域的应用提供了理论依据。

Research on Algorithm of LOD Creation

Level of Model(LOD) means to create models with different details in the same scene, and uses them while drawing.Creating models at multiple level of detail can effectively reduce data amount and complexity and realize real-time processing of the three-dimensional scene.In this paper,mainly research the steps of realizing and error computing technology of deleting vertics algorithm,progressive meshs algorithm,and algorithm based on quadric error metrics through analyzing the exist algorithms.This will offer the theoretical foundation to the future studies.