Research on the Pretreatment Technology of Three-Dimensional Solid Reconstruction Based on Two-Dimensional Piping Layout

Two-dimensional piping layout is widely used in chemical, petroleum, power, environmental protection, municipal works and other engineering constructions. Due to the lack of visualized expression and ambiguity, two dimensional piping layout is not beneficial to carrying out rapid analysis and correct comprehension. It is of great significance to make it automatically recognized and converted into three-dimensional solid. In this thesis, we take AutoCAD software as platform and carry out research on analysis, recognition, classification, storage and engineering semantics matching with regard to the complicated and diversified graphic information of two-dimensional piping layout in DWG format, meanwhile, we set up the expression standardization of two-dimensional piping layout as well as the pretreatment method and system of its graphic data information. This lays an important material foundation for the automation and intellectualization of the succeeding three-dimensional solid reconstruction.