关键词: 小波变换, 累进传输, 分形地形, 层次细节, 多分辨率

Abstract: In order to realize the dynamic multiresolution and progressive transmission for a 3D terrain, the wavelettechnique was used to sample and rebuild the high field. The fractal technique was used to increase artificial details.ROAM (Real-time Optimally Adapting Meshes)-based improved algorithm was used to create the dynamic multiresolution DEM (Digital Elevation Model) . The realizing of the whole algorithm indicates that a better effect has already been acquired.

Key words: wavelet transform, progressive transmission, fractal terrain, level of detail, multiresolution