地形可视化系统关键技术研究与实现  

Study on the key technology of terrain visualizing system and it's realization

作　　者：宋科宁[1] 张国栋[1] 徐蕾[1] 

机构地区：[1]沈阳航空工业学院计算机学院,辽宁沈阳110034

出　　处：《沈阳航空工业学院学报》2008年第1期60-63,共4页Journal of Shenyang Institute of Aeronautical Engineering

摘　　要：研究了地形可视化领域的关键技术,并将其应用于地形可视化系统的开发。系统使用四叉树结构对地形数据进行组织和管理,基于LOD思想,生成了连续多分辨率地形网格模型。在此基础上,综合应用了裂缝消除改进算法和视景体裁剪技术,实现了视点相关的地形可视化系统,在保证较高视觉效果的同时,提高了渲染速度。This paper discussed the key technology of terrain visualizing domain, and applied them to the terrain visualizing and emulating system. Using quadtree data structure to organize and manage the terrain data, building a continuous multi-resolution terrain grid model based on LOD,using the improved algorithms to eliminate cracks and the frustum-culling technique, the system achieved view-dependent terrain visualizing, not only have higher quality of visual effect, but also boost the speed of real-time rendering.

关 键 词：地形可视化 四叉树 多层次细节模型 视景体裁剪 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]