大规模地形动态快速绘制技术研究  

Study on Dynamic Rapid Rendering Technique of Large Scale Terrain

作　　者：冷志光[1] 汤晓安[1] 郝建新[1] 陈敏[1] 胡昆明[1] 

机构地区：[1]国防科技大学四院信息工程教研室,长沙410073

出　　处：《系统仿真学报》2006年第10期2832-2835,共4页Journal of System Simulation

基　　金：国家863高技术计划资助(2003AA134010)

摘　　要：大规模地形的快速绘制是目前的研究热点,如何有效地进行地形数据组织及模型简化,关系到渲染的速度和效果。为解决这个问题,结合现有算法提出了一种基于灵活简化准则的分块连续LOD模型构造算法,以及相应的模型预裁减调度绘制算法,将大规模地形转换为小块地形进行处理,并利用视点运动的连续性和前后帧的相关性,管理调度细节层次模型。实验结果表明,该算法有效地解决了绘制速度与质量之间的矛盾,较好地实现了大规模地形场景的实时快速漫游。Rapid rendering of large scale terrain is a research hotspot at present, How to organize the terrain data and how to predigest rendered models effect on the rendering rate and quality. In order to solve these questions, integrating the previous algorithm, a block-CLOD model algorithm was declared based on flexible predigestion rules, and accordingly a rendering algorithm pre-culling and managing LOD models. The algorithm effectively changes large scale terrain into small ones to handle. The continuity of the viewpoint movement and the relativity of fore-and-aft frames are used. These algorithms solve the conflict between the rendering rate and the quality in an effect way and realize rapid the real-time ramble in large scale terrain scenes.

关 键 词：地形绘制 分块连续LOD模型 数据调度 数据预裁减 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]