3DGIS中建筑物三维建模技术综述

在3DGIS中,数据模型和数据结构是一个关键问题,数据获取和建模越来越重要。本文以城市建筑物作为研究对象,阐述建筑物三维建模面临的问题,并对三维建筑物数据获取、建模、纹理映射等方面进行探讨。最后,通过二维数字地图获取几何数据,数码相机拍摄的近景影像作为纹理数据,在OpenGL中建模及贴图得到建筑物的三维模型,取得了较好的效率和效果。

Three-dimensional modeling of building in 3DGIS

In 3DGIS,the data model and data structure is a key issue,data acquisition and modeling are more and more important.This paper regarded the urban buildings as research targets.In the paper,it not only outlined essential problems of three-dimensional modeling,but also made specification on the acquisition of data,modeling,texture mapping and so on.Finally,it regarded the close-range digital camera images as texture data,modeling and mapping in OpenGL to acquire three-dimensional model of building,and obtaine...