LOD在大范围复杂场景简化中的应用  

The Application of LOD in Large-scale Complex Scene Simplification

作　　者：李长春[1] 何荣[1] 王宝山[1] 

机构地区：[1]河南理工大学测绘与国土信息工程学院,河南焦作454003

出　　处：《河南理工大学学报（自然科学版）》2007年第2期181-186,共6页Journal of Henan Polytechnic University（Natural Science）

基　　金：河南省重点科技攻关项目(0323032700);河南理工大学青年科学基金资助项目(Q2006-25)

摘　　要：为了降低场景的复杂度、提高场景中的漫游速度及满足实时显示的要求,提出了利用LOD进行复杂场景模型简化的方法.在介绍LOD分类的基础上,论述了LOD的基本原理,讨论了利用LOD进行模型简化的不同方法,并结合实例论述了共面简化法的基本过程和操作方法;针对模型简化过程中出现的突跳现象,提出了平滑混合的解决办法,达到了很好的视觉效果;最后说明不同细节层次LOD模型的选择方法.对大范围、具有复杂几何结构和形态描述的复杂场景起到了很好的简化效果.In order to reduce scene complication, the demand of real. time showing, the method of improve the speed of loaning in complex scene to meet LOD model simplification was discussed. Based on the LOD classification, different LOD model simplification methods were mainly discussed. Then the paper discussed the basic process and operate method of same-faces simplification with an example. For the sudden interval during models transition, the solve method of smooth amalgamation was discussed, and the vision effect is very good. In the end, how to choose the different LOD was mentioned. For the large scale scene, which has complex geometry structure and depiction, the simplification result is very good.

关 键 词：LOD 模型构建 场景简化 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]