摘要
采用包含建筑物高程信息的DEM数据进行地形建模时,依次连结相邻网格点为多边形的绘制方式会带来建筑物墙面倾斜,建筑物与地形混淆的情况。针对这一问题,利用建筑物顶点与地形顶点之间具有较大高度差的特点,结合建筑物的几何特征,提出一种在DEM数据中提取建筑物的算法。实验结果证明,利用该算法重建出的城区三维景观具有更为逼真的显示效果。
This paper presented a method of extracting buildings from digital elevation model data by utilizing the great altitude difference between building and terrain vertices, and the geometry characteristics of buildings. The experimental results showed that this approach made the reconstructed three-dimensional scene vivid.
出处
《交通科技与经济》
2009年第2期49-50,共2页
Technology & Economy in Areas of Communications
关键词
三维景观
数字高程模型
建筑物提取
three-dimensional scene
digital elevation model
building extraction
