计算机工程与应用Issue(7)：1-4,4.DOI:10.3778/j.issn.1002-8331.1308-0381
三维地形场景局部高精度地形快速更新方法
Rapid updating method of local high-precision terrain data in 3D terrain scene
摘要
Abstract
In many applications, three dimensional terrain scene has to be updated in local area with high-precision data, in order to build a local high-precision scene. Aiming at the dynamic updating of local terrain data, this paper puts forward a GPU tessellation based“Mosaic”algorithm of local high precision terrain. Through the interpolation and subdivision on the terrain grid within the updating area in GPU to increase the number of triangles, as a result, the geometrical accuracy of the local terrain model is improved without increasing the bandwidth of the memory and video memory. The results show that the precision of updating area meets the demand and this algorithm is obviously better than the common method in execution efficiency.关键词
三维地形场景/局部地形更新/实时网格细分/GPU算法Key words
three dimensional terrain scene/local terrain updating/real-time grid tessellation/GPU algorithm分类
信息技术与安全科学引用本文复制引用
刘浩,曹巍..三维地形场景局部高精度地形快速更新方法[J].计算机工程与应用,2014,(7):1-4,4.基金项目
国家自然科学基金（No.41001300）。 （）
