Automatic floor recognition method based on building drawing

Abstract

The invention discloses an automatic floor recognition method based on a building drawing. The method includes: reading information of a graph layer where columns are located, a graph layer where walls are located, a graph layer where doors and windows are located, a graph layer where balconies are located, a graph layer where deformation seams are located and a graph layer where well identifiersare located, and thus acquiring attribute information of all graph elements in all the graph layers and coordinate data of endpoints; finding out all line segments which are in line segments in the graph layer where the well identifiers are located and present the same well identifier; finding out coordinate data of endpoints, which are in the endpoints of all the graph elements and form a well according to each well identifier, and correspondingly writing the same into a well point set; finding out coordinate data of endpoints which are in the endpoints of all the graph elements and form outer contours of a floor, and writing the same into an outer-contour point set; and sequentially connecting all the endpoints in each well point set according to an order to generate a floor inner-contour line, outputting the same, sequentially connecting all the endpoints in the outer-contour point set according to an order to generate a floor outer-contour line, and outputting the same. The methodcan improve recognition efficiency and recognition precision of the floor of a building object.

Description

technical field [0001] The invention relates to the technical field of architectural object recognition in architectural drawings, in particular to an automatic floor recognition method 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 technical solutions u...

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 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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