基于包容矩形融合的机械零件图视图划分与识别技术

On the Mechanical Drawing Views Dividing and Recognizing Technique Based on Circumscribed Rectangle Merging Method

给出一种用于机械零件图的视图划分和识别方法,包括两部分:①提取图形元素的外接矩形,利用矩形的融合算法进行绘图区域划分;②采用基于非绘图特征的竞争识别方法,判别划分好的绘图区域属于基本视图或断面图中的哪一类。在划分视图时,将不同图形实体的判断都转换成统一的矩形数据结构来判断,简化了判断和处理过程。以轴套类零件图为例,用伪代码的形式给出了算法。

We present a method to divide and recognize views in mechanical part drawings. It has two parts: one is to extract graphic entities’ circumscribed rectangle and to divide each view from others by rectangle merging, the other is to determine which kind of view the divided area is. Using a unified rectangle data structure simplified the dividing process. Example on shaft part drawing is given. In the final adaptivity of the method is debated.