| NASA World Wind海量离散地形显示技术研究 |
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| 引用本文： | 胡庆武,余飞. NASA World Wind海量离散地形显示技术研究[J]. 测绘科学, 2011, 36(5): 52-54 |
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| 作者姓名： | 胡庆武 余飞 |
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| 作者单位： | 武汉大学遥感信息工程学院,武汉,430079 |
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| 基金项目： | 国家高技术研究发展计划“863计划”(2008AA121305); 国家自然科学基金(40901164) |
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| 摘 要： | 虚拟数字地球需要解决大范围海量地形快速显示问题。本文在对World Wind海量地形显示机理和地形数据LOD分层组织深入研究基础上,提出了基于ArcMap的离散地形分层切割流程,开发了与World Wind三维地形显示数据模型匹配的分层切割软件,对海量离散地形按不同分块大小和层次切割后的显示效率和效果进行了分析,结果表明World Wind能实现不同尺度地形数据的快速三维可视化。
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| 关 键 词： | NASA World Wind 海量地形数据 分层 地形显示 |
Display of massive discrete terrain based on NASA World Wind |
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| HU Qing-wu,YU Fei. Display of massive discrete terrain based on NASA World Wind[J]. Science of Surveying and Mapping, 2011, 36(5): 52-54 |
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| Authors: | HU Qing-wu YU Fei |
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| Affiliation: | HU Qing-wu,YU Fei(School of Remote Sensing and Information Engineering,Wuhan University,Wuhan 430079,China) |
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| Abstract: | Virtual Digital Earth needs to solve the problem of a wide range of massive terrain dataset viewing and management.A pyramid cutting flowchart of discrete terrain data based on ArcMap was presented as the LOD ruler of mass terrain data organization and display in the paper.A mass and discrete terrain data pyramid cutting software was developed which could directly match the World Wind data model.Mass and discrete terrain data display efficiency and viewing effect with different grid size and different layer... |
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| Keywords: | NASA World Wind massive terrain data pyramid layer terrain display |
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