一种多控制因子LOD大规模地形绘制算法  

A LOD Large-Scale Terrain Rendering Algorithm with Multiple Control Factors

作　　者：汤延辰 郭星[1] 张功营 丁全 姚振 TANG Yan-chen;GUO Xing;ZHANG Gong-ying;DING Quan;YAO Zheng(School of Computer Science and Technology, Anhui University, Hefei 230601. China;Suzhou power supply company,State grid Anhui electric power co. LTD,Suzhou 234000, China;Power science research institute of state grid Anhui electric power co. LTD, Hefei 230601, China;Information communication branch,State grid Anhui electric power co. LTD, Hefei 230061. China)

机构地区：[1]安徽大学计算机科学与技术学院,安徽合肥230601 [2]国网安徽省电力有限公司宿州供电公司,安徽宿州234000 [3]国网安徽省电力有限公司电力科学研究院,安徽合肥230601 [4]国网安徽省电力有限公司信息通信分公司,安徽合肥230061

出　　处：《微电子学与计算机》2019年第4期99-104,共6页Microelectronics & Computer

基　　金：国家科技支撑计划项目(2015BAK24B00)

摘　　要：提出一种基于动态LOD(level-of-detail,层次细节)的多控制因子三维地形渲染算法,该算法改进传统LOD地形绘制算法,提出一种多控制因子算法来构建LOD模型.首先依据视距以及表面粗糙度,以及视点速度构建节点评价系统,同时利用四点视域剔除方法以及运用加边法来进行裂缝消除.实验结果表明,该算法相对传统四叉树算法,有效减少无用顶点的绘制,显著地提高渲染效率.This paper proposes a kind of based on dynamic LOD(level-of-the detail) multi-control factors of the three-dimensional terrain rendering algorithm, this algorithm improved the traditional LOD terrain rendering algorithm. Firstly, the nodal evaluation system is constructed according to the horizon, surface roughness, and the point of view velocity, at the same time, the four-point view elimination method and the edge addition method are used to eliminate cracks. The experimental results show that compared with the traditional quadtree algorithm, this algorithm can effectively reduce the rendering of useless vertices and significantly improve the rendering efficiency.

关 键 词：LOD 多控制因子 视域剔除 裂缝消除 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]