工程图中线状图形的自动分类与识别算法

AN ALGORITHM FOR CLASSIFYING AND RECOGNIZING THE GRAPHIC ELEMENTS IN THE ENGINEERING DRAWINGS

描述了工程图中图形分类、识别和自动计算的方法及其理论依据．对线状图形的几何属性及其表示作了理论分析，为计算机自动识别工程图形提供了一种依据．提出采用模糊逻辑的方法对工程图中常见的闭合图形进行分析、归类和识别，并结合建筑结构图中钢筋的分类、识别和自动计算进行了实验．

This paper describes the method and theory basis for the classification, recognition and automatic calculation of the engineering drawing graphic elements. The geometry attribution and its representation are also analyzed theoretically which has set up the foundation of automatic classification and recognition. We make the classification for the general polyline and close polyline elements in the engineering drawing by using the blur logic method. The application experiments for the classification, recognition as well as automatic calculation for the bar in the architecture structure graph are also shown.