摘要
提出了一种基于DXF文件的面向三维重建的多视图的视图分离方法.该方法结合DXF文件的结构,分析视图分离中用到的图元数据结构,通过建立图元链表以及设置遍历标志位,提高了寻找各视图的最小外接矩形的效率,实现了多视图的分离,并在此基础上实现了视图关系确定、投影原点的确立以及坐标系的转换,为后续的三维重建工作提供了有效的数据信息.
In this paper, an orthographic views separation method of multi-views based on DXF files for 3D reconstruction is presented. Combining the structural characteristic of DXF files with analyzing metadata structure , through, establishing the chain list and ergodic tag of the drawing element, the efficiency of searching the smallest external rectangle is increased, and the multi-views are separated. On this basis, the relation of various views is determined, projection origin set-up and the coordinate transformation are implemented, which provides the effective data information in subsequent 3D reconstruction.
出处
《沈阳理工大学学报》
CAS
2007年第6期8-10,73,共4页
Journal of Shenyang Ligong University
基金
辽宁省科技厅攻关项目[2004220005]
关键词
工程图
视图分离
坐标转换
DXF文件
engineering drawings
views separation
coordinate transformation
DXF files
