| 地形模型的多分辨率简化与压缩 |
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| 引用本文： | 赵占杰,张军,蒋涛.地形模型的多分辨率简化与压缩[J].测绘科学,2005,30(2):73-75. |
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| 作者姓名： | 赵占杰 张军 蒋涛 |
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| 作者单位： | 1. 辽宁工程技术大学,辽宁,阜新,123000;中国测绘科学研究院,北京,100039
2. 中国测绘科学研究院,北京,100039 |
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| 摘 要： | 在地形的三维表达中 ,海量的三维数据在显示、存储、传输等方面存在着很多困难。为了解决这些困难 ,本文提出了一种基于渐进简化的多分辨率几何简化与压缩方法。通过该种方法 ,复杂的地形模型能够很好的被简化成适于LOD连续表达的方式 ,并且在简化基础上的数据压缩可使地形模型的存储量减少、绘制速度增加、网络传输效率提高 ,其结果能够胜任地形模型在网络上的渐进传输
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| 关 键 词： | 网格简化 细节层次(LOD) 渐进网格 几何压缩 渐进传输 |
| 文章编号： | 1009-2307(2005)02-0073-03 |
| 修稿时间： | 2004年10月19日 |
Multiresolution simplification and compression of terrain model |
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| ZHAO Zhan-Jie.Multiresolution simplification and compression of terrain model[J].Science of Surveying and Mapping,2005,30(2):73-75. |
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| Authors: | ZHAO Zhan-Jie |
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| Institution: | ZHAO Zhan-Jie~ |
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| Abstract: | In the course of the terrain 3D visualization,there are much difficulty including display,storage and transmission of the mass 3D data.To resolve these difficulty,this paper proposes a multiresolution simplification and compression method which based on progressing mesh simplification.Through this method,complex terrain models can be well simplified to a result that adapt to level of detail (LOD) expression,and the data compression based on above simplification can greatly decrease terrain model storage,increase rendering speed and enhance network transmission efficiency.The simplification and compression result can be competent for progressing transmission on network. |
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| Keywords: | mesh simplification level of detail progressive meshes geometry compression progressive transmission |
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