一种多视图的视图分离和视图关系确立方法

View Segmentation and View adjacencies Identification

提出一种多视图分离和视图关系确立方法 ,在分析线条连通集合以及线条连通集合之间包容关系的基础上 ,进行视图分离 ;根据制图规则以及图形标注信息建立视图之间的毗邻关系 ;较好地解决了包括位置任意分布的斜视图、局部视图在内的机械零件图多视图的视图分割和视图关系确立问题 。

A method is presented for segmenting mechanical engineering drawings in 2D orthographic vector data form into views using connectivity analysis and identifying the corresponding adjacent relationships between the views using rules from the draught-standard. The method is the first one that can accommodate auxiliary views including partial views in addition to the standard orthogonal set, the number of views and their layout in the drawings need not to be known a priori. The method has been successfully implemented as part of a system for feature recognition and 3D reconstruction from 2D engineering drawings.