3D Vector-Raster Data Integration Model Based on View Dependent Quadtree and GPU Friendly Rendering Algorithm

摘要：

In this paper, a 3D spatial data model based on vector and raster integration is presented, which encompasses both very large terrains and very detailed features, and a GPU friendly scheme to generate not only texture, but also the shape of the terrain. We rely on a view dependent quadtree refinement scheme. New quads are generated when needed and cached on the GPU. For each quad we produce on the GPU an appearance texture, based on the features vector description and their associated shaders. Adaptive refinement, procedural vector features and a mipmap pyramid provide three LOD mechanisms for small, medium and large scale quads. Our results show high performance with high visual quality.

作者: Xuefeng Cao Gang Wan Feng Li

作者单位: Institute of Surveying and Mapping Information Engineering University Zhengzhou 450052

会议类型: 国际会议

会议名称: The Second International Joint Conference on Computational Science and Optimization(CSO 2009)(2009 国际计算科学与优化会议)

会议地点: 三亚

会议语种:英文

页码: 1294-1297

在线出版日期: 2009-04-24（万方平台首次上网日期，不代表论文的发表时间）