| 基于地形的自适应压缩和实时可视化 |
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| 引用本文： | 郑新,王钰,王晓东.基于地形的自适应压缩和实时可视化[J].中国传媒大学学报,2011(2). |
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| 作者姓名： | 郑新 王钰 王晓东 |
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| 作者单位： | 北京师范大学图像处理和模式识别实验室; |
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| 基金项目： | 国家自然科学基金(项目No.6037300) |
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| 摘 要： | 提出了一种具有高压缩比的海量地形自适应压缩算法,此算法基于地形变化的特征将整数小波变换和限制四叉树三角化方法相结合。高效的计算速度和多分辨率分析的优良特性使得它能够在任何视点下有效地降低小波系数,并且能使用快速更新策略对地形进行实时渲染,小波系数表明了多分辨率的地形变化。模拟结果表明此算法能有效压缩数据,实时连续地渲染海量地形。
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| 关 键 词： | 整数小波变换 限制四叉树三角化 地形压缩 实时可视化 |
Terrain-based Adaptive Compression and Real-time Visualization |
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| ZHENG Xin,WANG Yu,WANG Xiao-dong.Terrain-based Adaptive Compression and Real-time Visualization[J].Journal of Communication University of China Science and TEchnology,2011(2). |
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| Authors: | ZHENG Xin WANG Yu WANG Xiao-dong |
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| Institution: | ZHENG Xin,WANG Yu,WANG Xiao-dong(Image Processing and Pattern Recognition Laboratory,Beijing Normal University,Beijing 100875,China) |
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| Abstract: | A large scale terrain adaptive compression method with high compression rate is proposed in this paper.It combines integer wavelet transform and restricted quadtree triangulation based on the terrain variation characteristic.Having efficient computing and multi-resolution attributes,it can decompress the wavelet coefficients at any viewpoint and render the terrain in real time by fast updating strategy.The wavelet coefficients indicate multi-resolution terrain variation.Simulation results demonstrate that t... |
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| Keywords: | integer wavelet transform restricted quadtree triangulation terrain compression real-time visualization |
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