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Indoor navigation map conversion method and system based on building CAD drawing

A technology of indoor navigation and conversion method, applied in the field of indoor navigation map conversion, to achieve the effect of improving navigation accuracy, improving efficiency and reducing manual intervention

Inactive Publication Date: 2020-10-30
湖北枫丹白露智慧标识科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method and system for converting indoor navigation maps based on building CAD drawings, for solving the problem of data conversion from DXF files to SVG files under the PATH label

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  • Indoor navigation map conversion method and system based on building CAD drawing
  • Indoor navigation map conversion method and system based on building CAD drawing
  • Indoor navigation map conversion method and system based on building CAD drawing

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Embodiment Construction

[0049] The present invention extracts necessary initial room outline information from the perspective of semantic analysis by analyzing the format file DXF corresponding to the original CAD architectural drawing; , first repair the defect in the breakpoint connection in the previous step, then obtain the complete independent individual data through skeleton extraction and contour detection, and finally construct the SVG navigation map under the PATH label.

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present inv...

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Abstract

The invention provides an indoor navigation map conversion method and system based on a building CAD drawing. The method comprises the steps: carrying out the semantic analysis of an original CAD file, building an extraction model, and carrying out the layered extraction to obtain initial room data; performing center line extraction and near point connection on the initial room data to obtain simplified image data; opening and closing the simplified image data to repair loopholes or breakpoints, and refining the loopholes or breakpoints through skeleton extraction; and acquiring independent room data through contour detection, and acquiring SVG map data under the PATH label through construction. According to the method, automatic data conversion from the DXF file to the PATH label under the SVG file is achieved, the manual intervention degree in the existing stage is reduced, and the development efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of navigation maps for indoor scenes, and in particular relates to an indoor navigation map conversion method and system based on building CAD drawings. Background technique [0002] Indoor navigation has become a hot research topic since 2010, and the acquisition and production of navigation maps closely related to it has become a key step in the research. Indoor navigation refers to a process of helping the navigator move from the starting position to the final target position by finding a planned path by determining its current position. In general, indoor or outdoor route navigation planning is realized by calculating the distance and direction between the user's current location and the corresponding multiple landmark points, and the final route can be planned by repeatedly repeating the process of determining the information. the corresponding path. At present, there are two ways to navigate with map...

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Application Information

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IPC IPC(8): G01C21/20G01B11/24G06F16/11
CPCG01B11/24G01C21/206G06F16/116
Inventor 林小龙冯胜平徐敬东
Owner 湖北枫丹白露智慧标识科技有限公司