Architectural-drawing-based automatic identification method for column and wall

Abstract

The invention discloses an architectural-drawing-based automatic identification method for a column and a wall. Information of a layer at which each column is located and a layer at which each wall islocated is read, coordinate data of end points of column lines of all columns are found out according to a pixel of each expression column, and the coordinate data are written into a column point setcorrespondingly; according to all processed new wall lines, whether all closed polygonal wall lines are connected with columns is determined; if not, coordinate data of end points of the closed polygonal wall lines are found out and are written into wall point sets correspondingly; if so, coordinate data of end points of a wall-column pixel formed by connection of the closed polygonal wall linesand the columns are written into wall-column point sets correspondingly; and a corresponding column contour line is generated based on each column point set and the generated line is outputted, a wallcontour line is generated based on each wall point set and the generated line is outputted, and a wall-column contour line is generated based on each wall-column point set and the generated line is outputted. Therefore, the recognition efficiency and recognition accuracy of the column and wall of the building object can be improved.

Description

technical field [0001] The invention relates to the technical field of architectural object recognition in architectural drawings, in particular to an automatic identification method for columns and walls based on architectural drawings. Background technique [0002] With the rapid development of urban construction and computer technology, the use of computers to complete the design of buildings has become a common method, and the design of two-dimensional architectural drawings has gradually changed to the design of three-dimensional architectural models. [0003] Existing technologies such as "Reading-Recognition and 3D Reconstruction of AutoCAD Architectural Engineering Drawings" by Zhai Rui, "Research on 3D Reconstruction Technology of Architectural Drawings" by Yuan Qingping, "Research on Urban 3D Modeling System Based on ObjectARX and Google Earth" by Liu Chuan Similar to Liu Lijing's "Research on Construction of 3D Scene Technology Using 2D Graphic Data", etc., the te...

AI Technical Summary

Problems solved by technology

[0004] However, the existing technology fails to make full use of the information contained in the architectural drawings in the recognition process of architectural drawings, and the reco

Images