摘要
本文通过对现有的点、线要素三维建模机制进行分析,提出了线状要素三维建模的点符号化方法:首先对线要素离散化,将线要素组成单元的三维模型用作点符号对离散点进行符号化处理,通过调整每个点符号的大小及旋转角度,实现所有模型的拼接。实验证明,该方法能在一定程度上实现线状要素的精细三维建模,为三维GIS中线要素的快速低成本精细三维建模提供了一种可行的途径。
This paper described the point symbolization method of line teature 3D modeling. Firstly, the line teature was dis- crtized into several points, then the 3D model of the unit of the line feature was used as point symbol to represent each point. When the size and the rotation of each point symbol were adjusted correctly, and the point models were connected as a whole. The experi- ments proved that this method could achieve the precise 3D modeling of the line features in some degree, and would provide a viable aDoroach for the ouick and low-cost 3D modeline of the line featl]ra~.
出处
《测绘科学》
CSCD
北大核心
2013年第3期143-144,156,共3页
Science of Surveying and Mapping
基金
西南交通大学专题研究项目(SWJTU10ZT02)
关键词
三维建模
线要素
点符号化方法
3D modeling
line feature
point symbolization method
