Internet环境下海量地形数据发布和三维显示

Massive Topographic Data Release and 3D Display on Internet

论述了在Internet环境下海量地形数据发布和三维显示的关键技术 ,包括平均插值小波建立金字塔数据结构的原理和方法、快速压缩解压缩技术、网络模型和基于视相关的二叉三角形简化地形的算法 .在此基础上 ,开发了基于Internet的全球三维可视化信息系统 .实验表明 ,所提出的技术方案是切实可行的 ,完全能够满足Internet环境下大规模数字高程模型和影像实时无缝漫游的要求 .

Using average interpolating wavelets to create pyramid data structure,compressed and decompressed technologies of massive data,network models and data simplification using binary triangle tree based on view-dependent are illustrated in this paper.The test proved that the technologies are practicable and satisfy the requirements of massive digital elevation model and image data real-timely displaying and roaming on the Internet.