Vertical graph identification method for converting architectural drawing into three-dimensional BIM model

A technology of architectural drawings and recognition methods, applied in the field of building information modeling, can solve problems such as recognition accuracy, information integrity and lack of automation, difficult and complex component recognition and semantic analysis

Active Publication Date: 2019-07-09
宁波睿峰信息科技有限公司
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Problems solved by technology

[0005] To sum up, at this stage, whether it is theoretical research or commercial software, the technology for converting CAD drawings into BIM models is lacking in recognition accuracy, information integrity, and automation, especially in the difficulty of building facades. Recognition and semantic analysis of complex components in the graph

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  • Vertical graph identification method for converting architectural drawing into three-dimensional BIM model
  • Vertical graph identification method for converting architectural drawing into three-dimensional BIM model
  • Vertical graph identification method for converting architectural drawing into three-dimensional BIM model

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Embodiment Construction

[0082] Such as figure 1 As shown, the present invention provides an elevation view recognition method that converts architectural drawings into three-dimensional BIM models. Since the method of the present invention relates to the construction field, for the convenience of understanding, first of all, several professional terms in the construction field involved in the present invention Be explained:

[0083] Layer: It is a basic function supported by a vector-based CAD system, which can manage design information in a systematic way. This function assigns the same type of image elements to the same layer, and meets the visual requirements by turning these layers on or off. and drawing requirements.

[0084] Axis symbol: the axis symbol used for alignment and positioning in CAD construction drawings, in figure 2 An example of axis symbols is given in , where there are two aligned axis symbols "1" at both ends of the axis.

[0085] Axis network: a network composed of buildin...

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Abstract

The invention discloses a vertical graph recognition method for converting a building drawing into a three-dimensional BIM model, and the method comprises the following steps: a, obtaining a target graph layer of the CAD building drawing, and obtaining a wall graph layer, a door and window graph layer, an elevation graph layer, an axis symbol graph layer, and an axis network graph layer; b, performing direction identification, elevation symbol identification and story height acquisition on each vertical drawing of the CAD building drawings; c, performing building component recognition, visibility analysis and three-dimensional positioning on each layer of plane drawing of the CAD building drawing; d, carrying out bounding box construction on the elevation drawing paper in each direction ofthe CAD building drawing paper, and carrying out search and size measurement on the elevation drawing component; according to the method, when the CAD building drawing is converted into the three-dimensional BIM model, the components of the elevation map of the CAD building drawing are recognized, the size numerical value of the components is obtained, and the CAD building drawing recognition andthree-dimensional BIM model reconstruction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of building information models, in particular to an elevation view recognition method for converting architectural drawings into three-dimensional BIM models. Background technique [0002] In the construction industry, building information modeling and management (BIM) is widely recognized as a new tool that can improve production efficiency and delivery quality. At present, domestic BIM technology has just started, and the country has not issued a complete BIM delivery standard. Most projects still use traditional construction drawings as design delivery; on the other hand, the complexity of BIM software operation prevents many construction units from Internal adaptation, making a BIM model often takes more time and manpower than drawing a set of CAD drawings, and these units tend to work with traditional CAD software. Therefore, when BIM technology has not yet been popularized and relevant policies have n...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T15/00G06F17/50
CPCG06T17/00G06T15/005G06F30/13
Inventor 尹梦天邓进明许若寒周彤宇刘宁闻雅邓武金若愚
Owner 宁波睿峰信息科技有限公司
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