Door and window automatic identification method based on architectural drawing

Abstract

The present invention discloses a door and window automatic identification method based on an architectural drawing. The method comprises the steps of: reading information of layers where doors and windows are located to find out components showing the doors or the windows; reading the information of layers where walls are located to find out door lines of all the doors according to the componentshowing each door, find out coordinate data of end points of the door walls forming the doors, correspondingly write the coordinate data into door wall point sets, find out window lines of all the windows according to the component showing each window, find out coordinate data of end points of window walls forming the windows and correspondingly write the coordinate data into window wall point sets; and correspondingly generating one door wall contour line according to each door wall point set, outputting the door wall contour lines, generating one window wall contour line according to each window wall point set, and outputting the window wall contour lines. According to the technical scheme, the identification efficiency and the identification precision of doors and windows of a buildingobject 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 doors and windows 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...

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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 recognition objects are too few, and the details of the architectural drawings are not recognized, resulting in low recognition efficiency and low recognition accuracy of architectural objects.

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