A method and device for extracting door and window information
A technology for information extraction, doors and windows, applied in image analysis, image enhancement, instruments, etc., can solve the problems of large errors, dangers, errors and other related information related to doors and windows, and achieve the effect of safe, convenient and fast extraction process.
Active Publication Date: 2020-10-13
QIAODUOTIANGONG SHENZHEN TECH CO LTD
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Problems solved by technology
[0006] In the process of realizing the present invention, the inventor found that the related technology has the following problems: in the process of contact measurement, due to the existence of manual participation in calculation or derivation, the uncertainty and error of the measurement data results
Especially in the process of measuring door and window information, the error of door and window related information obtained by contact measurement is relatively large, and the measurement of doors and windows is difficult and has certain risks.
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[0026] 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 those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0027] In interior design projects, it is necessary to design according to the size information of doors and windows, and add design elements such as curtains and glass windows. In the 3D visualization model of the target room, the doors and windows therein can be regarded as vacancies or holes provided on the wall, for example, the doors provided on the wall are corresponding vacancies on the surface of the 3D visualization model. By applying the door and window information m...
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An embodiment of the present invention discloses a door-and-window information extracting method and an apparatus for extracting the same. The method includes: acquiring the three-dimensional point cloud data of an indoor building; extracting one or more facets of the indoor building from the three-dimensional point cloud data, wherein the facet(s) is / are provided with holes corresponding to the door and window; extracting the boundary points of the holes on the facet(s); fitting the boundary points to obtain a fit boundary curve; fitting and obtaining the boundary straight lines for the holes according to the boundary curve; and according to the boundary straight lines, determining the size information of the door and window corresponding to the holes. The embodiment of the present invention achieves the non-contact measurement, which can provide accurate door and window related information and realizes the construction of a BIM model. The extraction process of the entire door and window information is safe, fast and easy to carry out.
Description
technical field [0001] The invention relates to the technical field of building information models, in particular to a method and device for extracting door and window information. Background technique [0002] Building Information Modeling (Building Information Modeling, BIM) is a direct expression of digital technology in the construction industry. It uses various information related to the building as a basis to construct a corresponding three-dimensional building model. With its huge advantages, the three-dimensional information model has gradually been applied in various fields, such as interior design. [0003] The traditional 2D drawing instructions will cause errors in reading and understanding for all parties involved in the project. In reading, subject to personal professional limitations, personal spatial imagination, work experience, etc., will lead to omissions or errors in information transmission. [0004] However, BIM software can quickly create 3D visualiz...
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IPC IPC(8): G06T7/70G06T7/62
CPCG06T7/62G06T7/70G06T2207/10028
Inventor 陈成华
Owner QIAODUOTIANGONG SHENZHEN TECH CO LTD