基于DXF文件的工程图中多视图的视图分离方法  

An Orthographic Views Separation Method of Multi-views in Engineering Drawings Based on DXF files

作　　者：武丹[1] 王琰[1] 祁燕[1] 

机构地区：[1]沈阳理工大学信息科学与工程学院,辽宁沈阳110168

出　　处：《沈阳理工大学学报》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]

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.

关 键 词：工程图 视图分离 坐标转换 DXF文件 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]