機械製図図面の認識(第3報) : 図面構造モデルに基づくトップダウン処理

概要

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This paper presents a 2-D structural model for mechanical drawings and top-down recognition processing based on it. The structural model is composed of an attribute representation model which represents geometrical attributes of drawing elements and a relationship representaion model which represents latent relations between them. Both play important roles not only in top-down processing but also later in a highly-functional 2-D CAD system, which the recognition system is focusing on as a target of its application. The authors first propose the configuration of this model and then the method of top-down processing, which includes the modification of misrecognition, the fixation of unseparated elements in bottom-up processing and the method of automatically generating the relationship representation model from the input attribute representation model. All these processing are done based on the production rules which is composed of both JIS drawing rules and tacit understandings. Some examples are finally shown.
公益社団法人精密工学会の論文
1992-10-05