Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

CAD drawing-based building indoor cross-floor space extraction method

An indoor space and extraction method technology, applied in geometric CAD, special data processing applications, instruments, etc., can solve the problems of no CAD cross-floor space extraction method, cross-floor space geometry extraction errors, etc., to improve algorithm efficiency and enhance accuracy. rate effect

Inactive Publication Date: 2017-08-25
NANJING NORMAL UNIVERSITY
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing indoor space extraction methods only consider the simple indoor situation of a single floor, which leads to errors in the geometric extraction of cross-floor spaces in complex buildings.
And in the current prior art, there is no CAD-based cross-floor space extraction method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • CAD drawing-based building indoor cross-floor space extraction method
  • CAD drawing-based building indoor cross-floor space extraction method
  • CAD drawing-based building indoor cross-floor space extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] The steps of this embodiment are as follows:

[0028] (1) Extract the components enclosing the indoor space of the building from the CAD drawings through methods such as constraint network and sample-driven symbol recognition. These building components that play an enclosed role are the boundary components of the indoor space; read in the boundary components of the indoor space The two-dimensional geometry set B={B i ,i∈[0,n)}, B i Indicates the geometry of the i-th boundary component, n indicates the number of boundary components, and then calculates the union U of the boundary components of the indoor space through the boundary component set B; find the convex hull C of the union U of the boundary components enclosing the indoor space of the building ;Use the convex hull C and the union U of the boundary components enclosing the indoor space of the building to do the Boolean difference operation to obtain the corresponding polygon, which includes the indoor space enc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a CAD drawing-based building indoor cross-floor space extraction method. The method comprises the following steps of: obtaining a building single-floor space extraction result; extracting a building cross-floor space identifier; judging a building cross-floor space communication relationship; and carrying building cross-floor space modeling. According to the method disclosed by the invention, cross-floor spaces in buildings can be directly extracted according to CAD drawings, so that the deficiency, caused by the traditional indoor space extraction algorithm, to the cross-floor spaces in the buildings is made up, the building cross-floor indoor space extraction problem can be effectively solved, the indoor space modeling errors caused by neglecting the cross-floor spaces are avoided, and the algorithm correctness and practicability of building indoor space extraction are improved.

Description

technical field [0001] The invention belongs to the technical fields of geographic information system, architecture and computer graphics, and in particular relates to a method for extracting indoor cross-floor space of a building based on CAD drawings. Background technique [0002] The indoor space of buildings is the main place for modern human life, work and entertainment. In the fields of digital city construction, building information management, and indoor environment simulation, architectural interior space is an important research object. Existing methods for extracting indoor space of buildings can be roughly divided into two categories: modeling methods based on human interaction and modeling methods based on CAD drawings. [0003] The modeling method based on human interaction can construct the three-dimensional entity of the interior space. For example, in modern architectural design software based on the IFC data model such as Revit, although there is an entity...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F17/50
CPCG06F30/13
Inventor 周良辰庞月勇林冰仙闾国年
Owner NANJING NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com