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System and method for generating doors and windows in CAD wall map layer during map construction

A technology for doors, windows and maps, applied in geometric CAD, 3D modeling, image data processing, etc., can solve the problems of low redrawing efficiency, low map drawing efficiency, affecting user experience, etc., to reduce labor costs and time, improve Drawing efficiency, time-saving effect

Pending Publication Date: 2022-02-15
北京蜂鸟视图科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the efficiency of this kind of map drawing is low, and the existing graphics need to be drawn twice, and the redrawing efficiency of more complex CAD drawings is low, which affects the user experience

Method used

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  • System and method for generating doors and windows in CAD wall map layer during map construction
  • System and method for generating doors and windows in CAD wall map layer during map construction

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Embodiment Construction

[0023]Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0024] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood t...

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Abstract

The invention relates to a system and a method for generating doors and windows in a CAD wall map layer during map construction. The method comprises the steps: acquiring a CAD electronic drawing, and confirming whether the acquired CAD electronic drawing can be analyzed or not; analyzing the analyzable CAD electronic drawing to obtain a plurality of CAD layers; screening a wall graph layer containing wall surface elements from the plurality of CAD graph layers; identifying the wall surface elements based on the features of the wall surface elements in the wall map layer; based on the wall surface paired lines and the wall end lines in the wall surface elements, identifying a door and window line from a parallel line segment between the two parallel wall end lines, identifying a door and window line from a parallel line segment between the parallel wall end lines and the wall surface lines, and generating a door and window in the constructed map based on the identified door and window lines.

Description

technical field [0001] The invention relates to the field of map construction, in particular to a system and method for generating doors and windows in a CAD wall layer when constructing a map. Background technique [0002] In the 21st century, indoor positioning and navigation have entered a period of rapid development. The positioning and navigation of large buildings such as airports, shopping malls, and hospitals are based on indoor maps. The automatic generation of indoor maps has become an urgent need. However, the existing indoor map modeling is not highly automated. There are four main modeling methods: [0003] Use 3D laser scanning to obtain indoor spatial data, and then manually process the acquired data to obtain indoor maps. This technology requires drafters to carry equipment into the room, and the economic cost is too high; using modeling software to manually draw indoor maps, due to automation Low level, not suitable for drawing large-scale indoor maps; use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06T17/05
CPCG06F30/13G06T17/05
Inventor 姜言言付小娣陈文姬
Owner 北京蜂鸟视图科技有限公司