Abstract: Characteristics of the title panel and title block forms is analyzed in the engineering drawing files. Reasoning and judging can be realized according to certain logic rules, thus it can divide the frame into different region son block forms. Based on characteristics of forms, new methods are proposed to search sub table and recognize corner points of the title panel and title block region. Utilizing methods of sub table searching and words matching, region division and width recognition of the title panel and title block are realized. The application instance shows the validity of the method.

Key words: engineering drawing, Computer Aided Design(CAD), information extraction, frame graphic recognition

摘要： 分析工程图形文件中明细表和标题栏线框图形特征，按一定规则对图形特征进行推理判断，从而将线框图形划分为不同区域的子表。提出基于线框特征的子表搜索与明细表标题栏区域角点识别方法，利用子表搜索与文字匹配的方法实现明细表和标题栏区域的划分，并识别明细表和标题栏宽度。应用实例证明了该方法的有效性。

关键词: 工程图, 计算机辅助设计, 信息提取, 线框图形识别

CLC Number: 

• TP301.6