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一种基于数据分块的海量地形快速漫游方法 被引量：30

A Fast Walkthrough Method for Massive Terrain Based on Data Block Partition
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摘要 大范围、海量地形数据的快速漫游是GIS、虚拟现实、游戏、仿真等领域的关键技术与难点之一。在目前地形数据简化算法的基础上 ,结合计算机硬件技术的发展 ,采用基于数据分块、部分数据常驻内存以及与视点相关的静态LOD模型实现了对任意格网大小海量地形数据的快速漫游。基于块节点的视景体裁剪、三角形条带组织以及边界裂缝消除、视觉光滑处理等手段的运用 。 Walkthrough in massive terrain data is a key technology and difficult problem of GIS, VR, game and simulation, etc. Based on current LOD algorithms and GPU technology of the computer, a fast walkthrough method with data block partition, out of core and static LODs is implemented. With view frustum culling based on nodes of block, triangle strip optimizing, cracks elimination and geomorphing, the efficiency and effect of the method are greatly increased.
作者 马照亭 潘懋 胡金星 吴焕萍 王占刚
机构地区 北京大学地球与空间科学学院
出处 《北京大学学报（自然科学版）》 CAS CSCD 北大核心 2004年第4期619-625,共7页 Acta Scientiarum Naturalium Universitatis Pekinensis
基金 国家 8 6 3计划资助项目 (2 0 0 1AA1 35 1 80 )
关键词 海量数据 地形漫游 数据分块 视景体裁剪 静态层次细节 massive data terrain walkthrough data block partition view frustum culling static level of detail
分类号 P208 [天文地球—地图制图学与地理信息工程] TP391 [自动化与计算机技术—计算机应用技术]
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参考文献10

  • 1赵友兵,石教英,周骥,潘志庚.一种大规模地形的快速漫游算法[J].计算机辅助设计与图形学学报,2002,14(7):624-628. 被引量：60
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二级参考文献8

  • 1[1]U S Geological Survey National Mapping Division. Standards for Digital Elevation Models[OL]. http://rockyweb.cr.usgs.gov/nmpstds/acrodocs/dem/2DEMO198.PDF, 1998
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共引文献59

同被引文献254

引证文献30

二级引证文献127

北京大学学报（自然科学版）
2004年 第4期

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