摘要
3维模型的构建是城市3维地理信息系统建设的核心。介绍了基于现有数据资料制作城市3维模型的工艺流程,重点研究了利用城市大比例尺3维DLG数据批量获取建筑物高度的新方法和贴图制作过程。按照上述制作工艺和方法较好地解决了大面积城市3维建模这一问题,生成的模型具有很高的精度,完全满足城市3维建模的精度要求。
The construction of 3D model is the core of three -dimensional urban geographic information system. In this paper, the process flow of three - dimensional modeling based on existing data is introduced, and the new method of acquiring building height based on large -scale 3D DLG is studied. According to the process flow above, large -area construction of 3D urban model is solved properly, and the 3D model has high precision to satisfy the precision requirements of 3D model totally.
出处
《测绘与空间地理信息》
2012年第9期77-79,82,共4页
Geomatics & Spatial Information Technology
关键词
3维模型
工艺流程
3维DLG
纹理
精度
three - dimensional model
process flow
three - dimensional DLG
texture
precision
