摘要
工程图纸的计算机输入识别和理解是当今CAD／CAM领域中一个亟待解决的重要课题．本文系统分析了此类系统中常见的一些处理方法，剖析了各自的优劣之处，介绍了基于图段结构的整体识别方法的主要思想、涉及到的基本概念及核心数据结构——图段结构．在此基础上提出了几个主要算法，并分析了整体识别方法的特点．最后给出了一个实例，结果表明该方法较好地解决了其它方法所面临的一些困难，不失为一种值得进一步探索的有效手段．
The EDRUS(Engineering Drawing Recognizing and Understanding System) which automatically converts image drawings into graphics drawings is an important problem solved urgently in the research field of CAD/CAM nowadays. In this paper,some commonly used methods of automatically recognizing and understanding engineering drawings by using computers are systematically analyzed. Advantages and disadvantages of these methods are respectively discussed. The main idea of the global recognition method (GRM),which is based on patch structure and is a newly developed technique,is introduced. Some basic concepts relating to the GRM are given in detail. The kernel data structure,patch structure,is presented. On the base of them,some key algorithms of recognizing graphic elements are described,and the primary characteristics of the GRM are put forward. In the end of this paper,an experimental example is given. The c0nversion result of the example shows that the GRM is exactly an efficient way to solve some problems which can't be solved by other methods and is an available means which is worth studying further more.
出处
《计算机学报》
EI
CSCD
北大核心
1998年第8期753-758,共6页
Chinese Journal of Computers
关键词
整体识别
工程图纸
图段结构
工程设计
Global recognition method, vectorization, thinning, engineering drawing
