【摘要】 分析了建筑工程图中符号的表示特点 ,讨论了符号的视觉特征提取和组织方法 ,给出了基于必要-充分条件、按序特征匹配的建筑工程图符号识别方法及其加速措施更多还原

【Abstract】 Symbol Recognition in machine reading of engineering drawings plays the key role of integrating the processes of architecture design, drawing verification, budget making and construction planning. A method to extract visual features and organize feature templates for recognizing architecture engineering symbols is presented. The recognition process is based on verifying the necessary and sufficient conditions of each kind of symbol according to a predefined order of precedence. Besides these, several useful techniques are used to accelerate recognition.更多还原