基于摄像机及线划图的网上三维场景

Interactive Web 3-D Scene from Video & DLG

文章对数字线划图和摄像机影像进行了结合,利用线划图内的水平几何信息和影像上的建筑物水平与铅直方向的比例关系,获取了建筑物的高度信息,同时建立了建筑物目标的组件模型库与三维场景关系;对于三维场景建立了符合国际Web3D标准的VRML/X3D数据格式,既保证了逼真度,又将数据量控制在最小,三维场景可以嵌入网页供自由浏览,实时交互旋转、缩放和漫游;在开发基于本地数据的建模和可视化软件的基础上,还对于远程网络浏览器的开发进行了讨论。

This paper has combined Digital Line Graph （DLG） with digital image from video, computed the height and 3D model of buildings from its 2D coordinates of DLG and relationship with height and level of digital image. The 3D scene consisting of these 3D models are converted to VRML/X3D format files consistent with Web3D standard, is embedded in homepage, and can be interactively rotated, zoom in/out and pan. This paper also dis- cussed 3 D browsers on Web.