Method and device for reconstructing three-dimensional scene based on CAD drawing
A technology of three-dimensional reconstruction and drawings, applied in the field of building information model, can solve the problems of complex BIM model production, inability to apply building operation and maintenance, commercial operation, etc.
Pending Publication Date: 2021-03-19
SHENZHEN XUMI YUNTU SPACE TECH CO LTD
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Problems solved by technology
[0003] However, because the production of BIM models is very complicated, CAD (English full name: Computer Aided Design, Chinese full name: Computer Aided Design) software drawing is still widely used in the construction industry.
However, most CAD drawings are only used during building construction and cannot be applied to subsequent building operation and maintenance and commercial operations.
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[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0068] refer to figure 1 , which shows a schematic flowchart of a method for performing three-dimensional reconstruction based on CAD drawings provided by an embodiment of the present invention. In this embodiment, the method includes:
[0069] S101: Receive a CAD drawing to be reconstructed, and detect whether the CAD drawing conforms to a preset format;
[0070] In this embodiment, the preset format is a CAD format that is universal and easy to identify CAD...
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The invention discloses a three-dimensional reconstruction method based on a CAD drawing, and the method comprises the steps: detecting whether a to-be-reconstructed CAD drawing accords with a presetformat or not, reading the CAD drawing under the condition that the CAD drawing accords with the preset format, and determining the building element type of each layer according to a layer placement rule; traversing each type of building elements, and storing the information of the building elements meeting a preset rule; determining an association relationship between the building contour line and the text description according to pre-stored building contour and text description information; and analyzing each type of stored building elements according to the types to generate a three-dimensional model of the building. Therefore, before the CAD drawing is read or before each type of building elements is read, the file format and the formats of the building elements are detected in advance, the data processing efficiency is improved, and the accuracy of the read building elements is improved.
Description
technical field [0001] The invention relates to the field of building information models, in particular to a method and device for reconstructing a three-dimensional scene based on CAD drawings. Background technique [0002] In the construction engineering industry, building information modeling and management (full English name: Building Information Modeling, English abbreviation: BIM) is widely regarded as a new tool that can improve production efficiency and delivery quality. The core of BIM is to establish a virtual three-dimensional model of construction engineering. , using digital technology to provide this model with a complete architectural engineering information base that is consistent with the actual situation. [0003] However, because the production of BIM models is very complicated, CAD (English full name: Computer Aided Design, Chinese full name: Computer Aided Design) software drawing is still widely used in the construction industry. However, most CAD draw...
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IPC IPC(8): G06F30/12G06F30/13G06F30/20G06T17/00
CPCG06F30/12G06F30/13G06F30/20G06T17/00
Inventor 徐子安赵磊田野翟铭王旭
Owner SHENZHEN XUMI YUNTU SPACE TECH CO LTD