【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更多还原

【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.更多还原