城市三维空间模型快速构建方法研究

对城市三维空间模型建立方法的研究现状进行总结,提出城市三维空间模型的快速重建方案:采用一次性生成约束TIN构建地形模型,利用数字影像提取建筑物模型,通过CSG体素生长法对建筑物实施建模。在模型的建立过程中,首次将3种方法综合使用,实现了城市三维空间模型快速显示。

Research on Rapid Construction Method of Urban 3D Models

After a summary of the research status of construction methods of urban 3D models,this paper proposes a scheme for the rapid reconstruction of 3D spatial models in urban areas,which involves building terrain models through Triangulation Irregular Net(TIN)for once,extracting building models through digital images and constructing building models through voxel growth method of Constructive Solid Geometry(CSG).In the process,the three methods have been integrated for the first time so the rapid construction of urban 3D models can be finally achieved.