Abstract: Chemical pipeline figure usually contains a large number of valves and fittings, which are the difficult part of 3D reconstruction. Based on the study of simply connected chemical pipeline reconstruction, a method that replaced different valves or fittings with different color segments was proposed. This method helped identify and match pipelines more quickly and accurately, and completed the 3D reconstruction. The main content consisted of the information recognition and matched with the front view and a top view of the pipeline diagram, the storage and access of 3D information, and the study of application examples. The implementation was mainly conducted by using AutoLISP, which was the secondary development language of AutoCAD.

Key words: Valves and fittings, 3D reconstruction, Recognition and match, AutoLISP, 3D data 

摘要： 化工管道图中常常包含大量的阀门和管件, 而这些阀门和管件是实现化工管道图三维重建的难点。
在研究单连通化工管道三维重建的基础上, 提出了一种用不同颜色及不同含义的置换图例表示不同阀门和管件的
方法。利用 A u t o CAD二次开发语言 A u t o L I S P, 实现了对管道图的主视图和俯视图进行信息识别与匹配、 三维数据
的存储及读取。实例研究结果表明, 利用本文的方法可以快速、 准确的对管道图进行识别与匹配并完成其三维重
建。

关键词: 阀门和管件, 三维重建, 识别与匹配, A u t o L I S P, 三维数据