CN107506391B - Method for extracting CAD drawing information to indoor map - Google Patents
Method for extracting CAD drawing information to indoor map Download PDFInfo
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Abstract
The invention relates to the technical field of indoor maps, and provides a method for extracting CAD drawing information to an indoor map, which is used for establishing and updating a building entity information database and a building floor contour information database; extracting the characteristic information of the to-be-processed building CAD drawing, matching the building entity of the building entity information database according to the characteristic information, and quickly and accurately constructing the indoor map. By means of technologies such as CAD, indoor maps, feature matching and deep learning, extraction of feature elements such as points and edges of the CAD is achieved, corresponding relations with elements such as rooms, passageways, stairs, doors or windows of the indoor maps are established, conversion from CAD drawing information to indoor map information is achieved, and the requirement of rapid indoor map construction corresponding to large-scale shopping malls and complex buildings is met; the generated indoor map information is stored in the cloud end, so that real-time calling and use are facilitated; the novel indoor map drawing method is simple, efficient, scientific and accurate, and can be used for really realizing rapid drawing and presenting various novel indoor map drawing modes.
Description
Technical Field
The invention relates to the technical field of indoor maps, in particular to a method for extracting CAD drawing information from an indoor map.
Background
In recent years, with the continuous progress of society, the national economy is continuously developed, the city progress is continuously accelerated, large-scale shopping malls and complex buildings are continuously emerged, the indoor activity frequency of people is greatly increased, the demand degree of indoor position service is more and more strong, and the combination of the indoor position service and an indoor map is the trend of future development. The method is characterized in that the method is used for pushing relevant real-time advertisement information or discount propaganda for customers of superstores and complex buildings, because CAD drawing information of the superstores and the complex buildings is relatively complete, indoor map information is quickly constructed by relying on the CAD drawing information, the customers can conveniently know the construction patterns of the superstores and the complex buildings, meanwhile, the customers can conveniently select indoor arrangement related equipment facility points of the superstores, the realization of related services such as position information is ensured, cost saving and efficiency improvement are provided for merchants, and high-quality life experience is provided for the customers.
The method for acquiring the indoor space map data is multiple, the indoor space map information on the CAD drawing is judged by human eyes in the prior art and is expressed in a manual drawing mode, and the mode is not only low in efficiency but also insufficient in accuracy; with the continuous development of information technology, at present, a method and a system for converting CAD data into GIS data are proposed, that is, a corresponding relation table between a terrain data model in a GIS system and feature information of a terrain data symbol in a CAD software system is established, CAD data information is imported, relevant feature information is extracted, and GIS data conversion is realized; the method and the system for converting the spatial data are also provided, the conversion from the CAD data to the GIS spatial data is realized, meanwhile, the GIS can be edited in batch, the heterogeneous aggregation of the CAD and GIS spatial data is guaranteed to a certain extent, but the method and the system are only used for constructing the map geographic information outdoors, a corresponding method is not provided for converting the indoor spatial map data, and a high-quality CAD graph is required to be relied on, so that certain limitations exist.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a method for extracting CAD drawing information to an indoor map, and overcomes the limitations of low efficiency and low accuracy of human eye identification and manual single drawing.
The invention relates to a method for extracting CAD drawing information to an indoor map, which comprises the steps of establishing and updating a building entity information database and a building floor contour information database; extracting the characteristic information of the to-be-processed building CAD drawing, matching the building entity of the building entity information database according to the characteristic information, and quickly and accurately constructing the indoor map.
Further, the building entity information includes position and size information of stairs, elevators, escalators, rooms, doors, walls.
Further, the building entity information database establishment and update specifically comprises the following steps:
step 1.1, building entity information database is established;
step 1.2, extracting characteristic information of various CAD drawings, establishing a matching relation between the characteristic information and building entity information, and storing the matching information;
and step three, continuously expanding the building entity information database in the step one, and correcting the matching information in the step two according to a new CAD drawing.
Further, extracting the characteristic information of the building CAD drawing to be processed, matching the building entity of the building entity information database according to the characteristic information, and quickly and accurately constructing the indoor map by the specific steps as follows:
step 2.1, storing the CAD drawings of the buildings to be processed according to floors respectively, and establishing a building floor information base;
2.2, calculating the size and the coordinate position of the contour of the building floor of each floor in the CAD drawing of the building to be processed, matching the building floor contour information base according to the characteristic information of the contour of the building floor of each floor, constructing a building structure main body of an indoor map, and aligning the building contour of an outdoor building;
step 2.3, extracting the characteristic information of the to-be-processed building CAD drawing, extracting a corresponding building entity from the building entity information database according to matching information, and filling the building entity to a corresponding position of an indoor map;
step 2.4, intelligently filling names of the building entities in the drawing on the indoor map according to the one-to-one correspondence of the characteristic information of the to-be-processed building CAD drawing and the building entities in the indoor map; the room type is filled.
Further, the method also comprises the following steps:
and 2.5, calculating a traveling route and a pedestrian path according to the building floor and room outline and the building entity layout, so that the indoor map information is more specific and abundant.
Further, for the same or similar room layout, the whole information extraction is realized, indoor maps are drawn in batches, and corresponding indoor map entity information is generated, so that the limitations of low efficiency and low accuracy of the conventional human eye identification and manual single drawing are avoided; the same or similar room layouts include: rooms of hotels and large shopping malls.
Further, the constructed indoor map is stored in the cloud.
Further, the drawing of the indoor map uses a map editor.
The invention has the beneficial effects that: by means of technologies such as CAD, indoor maps, feature matching, deep learning and the like, extraction of feature elements such as points and edges in CAD is achieved, corresponding relations with elements such as rooms, passageways, stairs, doors or windows of the indoor maps are established, conversion from CAD drawing information to indoor map information is achieved, and the requirement of rapid indoor map construction corresponding to large-scale shopping malls and complex buildings is met. The efficiency is improved, and the accuracy is guaranteed; the generated indoor map information is stored in the cloud, so that real-time calling and use are facilitated, various display forms can be supported, display at a mobile terminal or a webpage terminal is met, and the defect that CAD drawing information needs to be presented by means of special software is overcome; the method really realizes fast drawing, is simple, efficient, scientific and accurate, presents various novel indoor map drawing modes, and provides a new intelligent, convenient and accurate idea for the conversion from the CAD drawing information to the indoor map information.
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FIG. 1: the embodiment of the invention provides a flow chart of a method for extracting CAD drawing information to an indoor map.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the respective drawings denote the same features or components, and may be applied to different embodiments.
The embodiment of the invention relates to a method for extracting CAD drawing information to an indoor map, which comprises the steps of establishing and updating a building entity information database and a building floor contour information database; extracting characteristic information of a to-be-processed building CAD drawing, matching a building entity of a building entity information database according to the characteristic information, and quickly and accurately constructing an indoor map; preferably, the map editor is used for drawing the indoor map.
The building entity information includes position and size information of various building entities such as stairs, elevators, escalators, rooms, doors, walls, and the like.
Preferably, the building entity information database establishment and update specifically includes the following steps:
step 1.1, building entity information database is established;
step 1.2, extracting characteristic information of various CAD drawings, establishing a matching relation between the characteristic information and building entity information, and storing the matching information;
and 1.3, continuously expanding the building entity information database in the step one, and correcting the matching information in the step two according to a new CAD drawing.
Preferably, the method comprises the following specific steps of extracting the characteristic information of the to-be-processed architectural CAD drawing, matching the architectural entity of the architectural entity information database according to the characteristic information, and quickly and accurately constructing the indoor map:
step 2.1, storing the CAD drawings of the buildings to be processed according to floors respectively, and establishing a building floor information base;
2.2, calculating the size and the coordinate position of the contour of the building floor of each floor in the CAD drawing of the building to be processed, matching the building floor contour information base according to the characteristic information of the contour of the building floor of each floor, constructing a building structure main body of an indoor map, and aligning the building contour of an outdoor building;
step 2.3, extracting the characteristic information of the to-be-processed building CAD drawing, extracting a corresponding building entity from the building entity information database according to matching information, and filling the building entity to a corresponding position of an indoor map;
step 2.4, intelligently filling names of the building entities in the drawing on the indoor map according to the one-to-one correspondence of the characteristic information of the to-be-processed building CAD drawing and the building entities in the indoor map; the room type is filled.
And 2.5, calculating a traveling route and a pedestrian passageway by combining mass data according to the building floor, the room outline and the building entity layout, so that the indoor map information is more specific and richer.
In the step 2.3, the current artificial intelligence technology can be fully utilized to carry out deep learning and machine training on the characteristic information on the CAD drawing, for example, continuously and deeply learning the size and position information of passing facilities such as an elevator, an escalator and a stair, and the accuracy of matching the characteristic information with the entity is greatly improved through deep learning of mass data.
For the same or similar room layout, the whole information extraction is realized, indoor maps are drawn in batches, and corresponding indoor map entity information is generated, so that the limitations of low efficiency and low accuracy of the conventional human eye identification and manual single drawing are avoided; the same or similar room layouts include: rooms of hotels and large shopping malls.
The built indoor map is stored in the cloud end, so that real-time calling and use are facilitated, various display forms can be supported, and display at a mobile end or a webpage end is met.
Fig. 1 shows a specific flow of a specific embodiment of the present invention.
The invention realizes a method for extracting CAD drawing information to an indoor map, which comprises the following steps: the matching relation between the characteristic information of the CAD drawing and the indoor map entity is realized through the technologies of artificial intelligence deep learning, machine training and the like, and the direction is calculated through mass data to deduce the related indoor entity information: size and coordinate location of rooms, windows, doors, etc. For similar room layouts, such as: the parking lots in rooms of hotels and large shopping malls can realize integral information extraction, indoor maps are drawn in batches, corresponding indoor map entity information is generated, and the limitations of low efficiency and low accuracy of conventional human eye identification and manual single drawing are avoided. Indoor map information that this patent generated is saved in high in the clouds, is convenient for call in real time and uses to can support various show forms, satisfy the demonstration at removal end or webpage end, break through the shortcoming that CAD drawing information need rely on exclusive software to present. The method really realizes fast drawing, is simple, efficient, scientific and accurate, presents various novel indoor map drawing modes, and provides a new intelligent, convenient and accurate idea for the conversion from the CAD drawing information to the indoor map information.
While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes may be made to the embodiments herein without departing from the spirit of the invention. The above examples are merely illustrative and should not be taken as limiting the scope of the invention.
Claims (5)
1. A method for extracting CAD drawing information to an indoor map is characterized in that the method establishes and updates a building entity information database and a building floor contour information database; extracting characteristic information of a to-be-processed building CAD drawing, matching a building entity of a building entity information database according to the characteristic information, and quickly and accurately constructing an indoor map; calculating a traveling route and a pedestrian passageway according to the building floor and room outlines and the building entity layout; the constructed indoor map is stored in the cloud end;
extracting the characteristic information of the to-be-processed building CAD drawing, matching the building entity of the building entity information database according to the characteristic information, and quickly and accurately constructing the indoor map by the specific steps as follows:
step 2.1, storing the CAD drawings of the buildings to be processed according to floors respectively, and establishing a building floor information base;
2.2, calculating the size and the coordinate position of the contour of the building floor of each floor in the CAD drawing of the building to be processed, matching the building floor contour information base according to the characteristic information of the contour of the building floor of each floor, constructing a building structure main body of an indoor map, and aligning the building contour of an outdoor building;
step 2.3, extracting the characteristic information of the to-be-processed building CAD drawing, extracting a corresponding building entity from the building entity information database according to matching information, and filling the building entity to a corresponding position of an indoor map; deep learning and machine training are carried out on the characteristic information on the CAD drawing by using an artificial intelligence technology, and the accuracy of matching the characteristic information with the entity is improved by deep learning of mass data;
step 2.4, intelligently filling names of the building entities in the drawing on the indoor map according to the one-to-one correspondence of the characteristic information of the to-be-processed building CAD drawing and the building entities in the indoor map; the room type is filled.
2. The method for extracting CAD drawing information into the indoor map as claimed in claim 1, wherein the construction entity information includes position and size information of stairs, elevators, escalators, rooms, doors, walls.
3. The method for extracting CAD drawing information into an indoor map as claimed in claim 1 or 2, wherein the building entity information database is created and updated by the steps of:
step 1.1, building entity information database is established;
step 1.2, extracting characteristic information of various CAD drawings, establishing a matching relation between the characteristic information and building entity information, and storing the matching information;
and step 1.3, continuously expanding the building entity information database in the step 1.1, and correcting the matching information in the step 1.2 according to a new CAD drawing.
4. The method for extracting the CAD drawing information to the indoor map as recited in claim 1, wherein for the same or similar room layout, the whole information extraction is realized, the indoor map is drawn in batch, the corresponding indoor map entity information is generated, and the limitations of low efficiency and low accuracy of the previous human eye identification and manual single drawing are avoided; the same or similar room layouts include: rooms of hotels and large shopping malls.
5. The method of extracting CAD drawing information into an indoor map as recited in claim 1, wherein the indoor map is rendered using a map editor.
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| CN108692728A (en) * | 2018-04-26 | 2018-10-23 | 哈尔滨工业大学深圳研究生院 | Indoor navigation method based on CAD architectural drawings and Computer Vision Recognition and system |
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| CN109685897B (en) * | 2018-12-15 | 2022-04-22 | 武汉兴联云立方科技有限公司 | House type drawing method for drawing door and window opening by one-step dragging |
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| CN112445877A (en) * | 2019-08-27 | 2021-03-05 | 中兴通讯股份有限公司 | Base station positioning method and device |
| CN110704931A (en) * | 2019-10-09 | 2020-01-17 | 常州市贝叶斯智能科技有限公司 | Indoor map editor for generating GeoJson format |
| CN111598972B (en) * | 2020-04-03 | 2021-06-29 | 深圳大学 | Method, device, computer equipment and storage medium for generating floor plan |
| CN113205024B (en) * | 2021-04-25 | 2023-01-10 | 万翼科技有限公司 | Engineering drawing preprocessing method and device, electronic equipment and storage medium |
| CN113218398A (en) * | 2021-05-11 | 2021-08-06 | 深圳市豪位科技有限公司 | AVP vehicle indoor navigation method and device, and storage medium |
| CN114155716A (en) * | 2022-02-08 | 2022-03-08 | 深圳市金蚁云数字科技有限公司 | Parking space management method, device, equipment and computer storage medium |
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