An information extraction of title panel in engineering drawings and automatic generation system of three statistical tables

The title panel information in engineering drawings is the important data source for product data management (PDM). Firstly, the data structure of title panel and bill of material (BOM) information in engineering drawing was analyzed, and the collected concourse based on the describing information cell was put forward. Then the text-objects and line-objects within the collection concourse were handled to get the information of the text objects and its position by information cell recognition and format recognition. And also, the data concerning the extracted information was written into the database. Finally, the development and implement of the TST compilation and the generation system automatically based on the bill of material (BOM), bills of standard (BOS) and bills of purchase (BOP) (i.e. TST) was accomplished. The info consistency between the engineering drafting and the compilation of TST was assured by using the software package based on this method in practical project, and the designing efficiency was enhanced in favor of the implement of CAPP.