摘要
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。
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-dimensiollal model of building, and obtained a better efficiency and effect.
出处
《测绘科学》
CSCD
北大核心
2011年第1期70-72,共3页
Science of Surveying and Mapping
