大比例尺地形仿真中地形建模与实时绘制技术的研究  

Research on Terrain Model Construction and Manifestation in Real Time of Large Scale Terrain Simulation

作　　者：焦志勇[1] 殷小龙[2] 王旭辉[1] 

机构地区：[1]信息工程大学理学院,河南郑州450001 [2]信息工程大学科研部,河南郑州450002

出　　处：《信息工程大学学报》2008年第4期505-508,512,共5页Journal of Information Engineering University

摘　　要：大比例尺地形环境仿真以TIN DEM为基础,可精细描述复杂的地形环境,但是在建模、实时绘制以及应用等方面都较以Grid DEM为基础的中小比例尺地形环境仿真更为复杂。文章研究了大比例尺地形环境仿真在建模过程中模型与场景的融合问题及实时绘制中TIN DEM的分块问题最后以实践为基础给出优化设计的实例。While the large scale terrain simulation which is based on TIN DEM can describe complex terrain environment in detail, it is more difficult for it to construct models, render scenes in real time than the small scale terrain simulation which is based on Grid DEM. This thesis researches on the syncromesh of the models and the terrian when using large scale terrain simulation to construct models and the division problem of the TIN DEM when rendering scenes in real time. In the end, the paper gives the advanced designing method based on practice.

关 键 词：大比例尺地形环境仿真 TIN DELAUNAY三角网 建模 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] P208[自动化与计算机技术—计算机科学与技术]