工程图扫描图象中剖面区域的整体识别  

A GLOBAL APPROACH TO THE RECOGNITION OF SECTION AREAS OF ENGINEERING DRAWINGS

作　　者：李宾[1] 谭建荣[1] 彭群生[1] 

机构地区：[1]浙江大学CAD&CG国家重点实验室

出　　处：《工程图学学报》1996年第2期75-82,共8页Journal of Engineering Graphics

基　　金：国家杰出青年科学基金;国家自然科学基金;浙江省自然科学基金

摘　　要：工程图的识别一直是ＣＡＤ研究领域的难点和热点问题。传统的基于细化的算法本质上是一种局部算法，在细化得到骨架的同时，在分叉点产生变形，并且得不到工程图的整体信息，因此难以满足人们的需要。本文在充分利用工程图整体算法优越性的基础上，提出用最大优先度原则及三个辅助原则来提取剖面线和剖面区域，以减少对后续步骤的干扰，并获得剖面区域的整体信息。本文提出的算法已经实现，在浙江大学ＣＡＤ＆ＣＧ国家重点实验室开发的工程图纸扫描识别系统中得到检验。The recognition of engineering drawings has long been a focus in the field of CAD.The traditional algorithm based thinning is essentially a local algorithm, which generates deformations at branch points. We can't obtain the global information of an engineering drawing while getting the skeleton by thinning. By fully taking advantage of global recognition, the paper proposes a biggest priority principle and three subordinate principles to pick up section lines and to recognize the outline of section areas The new algorithm can reduce the affection of disturbance to the consecutive operations while obtaining the global information of the engineering drawing. The new algorithm has been implemented in the Engineering Drawingings Scanning Recognition System, which is developped by the State Key Lab. of CAD&CG at Zhejiang University.

关 键 词：工程图 图象扫描 剖面区域 模式识别 

分 类 号：TB23[一般工业技术—工程设计测绘] TU204[建筑科学—建筑设计及理论]