计算机工程与应用2020，Vol.56Issue(1)：238-243,6.DOI:10.3778/j.issn.1002-8331.1809-0367
结合视点变换的三维地形无缝绘制算法
Seamless 3D Terrain Rendering Algorithm Combined with Changed Viewpoint
摘要
Abstract
A seamless terrain rendering algorithm combined with changed viewpoint is proposed to solve the problem that the conventional multi-resolution terrain rendering methods are time-consuming and having strong tile level constraint. Firstly, a rough LOD model based on precision is generated. Then fine mesh models are generated by using the texture mapping technique. Finally, it adjusts the vertex position dynamically according to the viewpoint to eliminate the T-shaped crack caused by the level detail transition. In addition, it uses CPU-GPU to work together to transfer the batch network and rendering work from CPU to GPU, which improves the processing speed of the whole system. The experi-mental results prove that the proposed method can effectively eliminate terrain cracks and ensure a smooth transition of the mesh.关键词
三维地形/裂缝消除/基于视点/纹理映射Key words
3D terrain/crack elimination/based on viewpoint/texture mapping分类
信息技术与安全科学引用本文复制引用
杨燕,王慧青,焦越..结合视点变换的三维地形无缝绘制算法[J].计算机工程与应用,2020,56(1):238-243,6.基金项目
国土资源公益性行业科研专项(No.201211023). （No.201211023）
