Automatic Stair Recognition Method Based on Architectural Drawings

Abstract

The invention discloses a stair automatic identification method based on architectural drawings, which reads the information of the layer where the stair is located to find out the coordinate data of the end points of each stair segment and writes it into a stair segment point set; and finds out all The stair sections respectively represent the stair sections of the same stair; by reading the information of the layer where the column is located, the layer where the wall is located, and the layer where the door and window are located, the coordinate data of the end points of the stairwells that make up the staircase are found and written into a corresponding Stairway point set; determine the direction of the stairs according to the steps of the stairs and the staircase, obtain the elevation data of the steps, and find out the coordinate data of the end points of the N step platforms that make up the stairs and write them into the N step platforms respectively The point set and the elevation data of the step platform are obtained; the corresponding step triangle point set, the outline of the step and the step platform triangle point set are generated and output. The invention can improve the recognition efficiency and recognition precision of building object stairs.

Description

technical field [0001] The invention relates to the technical field of architectural object recognition in architectural drawings, in particular to an automatic stair 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, "Architectural Engineering Drawings" by Yuan Qingping Figure three Research on 3D Reconstruction Technology", Liu Chuan's "Urban 3D Modeling System Research Based on ObjectARX and Google Earth", and Liu Lijing's "Use of 2D Graphics Data to Construct 3D Scene Technology", 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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