HLODs模型在场景快速绘制中的应用  

HLODs for fast rendering of large-scale environments

作　　者：智明[1] 郑姨婷[1] 

机构地区：[1]同济大学CAD研究中心,上海200092

出　　处：《计算机应用》2007年第9期2126-2128,共3页journal of Computer Applications

摘　　要：论述了一种基于视相关分级细节层次的场景简化的算法,加速场景绘制速度。预处理阶段利用八叉树构造场景的分层次结构;实时渲染阶段,采用多线程进行场景的实时绘制:根据视点进行可见性剔除,根据屏幕误差选择合理的分级细节层次,利用数据管理调度进行数据的实时更新。在保持图像的保真度条件下,可实现场景的快速绘制。Discuss an algorithm based on view-dependent Hierarchical Levels Of Detail （HLODs） in order to accelerate the rendering speed. During prcprocessing phase, build a hierarchical decomposition of the environment using an octree and create HLODs. At run time, use multiple threads to render the environment： use visibility culling to cull those invisible blocks, choose HLOD according to screen error, and also use data management and attemperation to update the data in main memory. Try to find the optimal acceleration method while still maintaining the image fidelity.

关 键 词：多级细节层次 八叉树 可见性剔除 屏幕误差 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]