CN109522381A - The hidden installation security detection method of building based on 3DGIS+BIM - Google Patents
The hidden installation security detection method of building based on 3DGIS+BIM Download PDFInfo
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Abstract
The invention discloses a kind of hidden installation security detection methods of building based on 3DGIS+BIM.It includes the following steps: the semantic conversion library for constructing BIM and 3DGIS；BIM data prediction；BIM data after conversion are loaded into the mobile terminal 3DGIS；The QR two dimensional code of design building object significant points augmented reality safety detection；The hidden installation security detection of building.The present invention has the advantages that improve the hidden installation security detection efficiency of building, versatile.
Description
Technical field
The present invention relates to a kind of safety detection methods of the hidden facility of building, more specifically say it is based on 3DGIS+
The hidden installation security detection method of the building of BIM.More specifically say it is a kind of use based on 3DGIS, BIM and AR technology
In the safety detection method of the hidden facility of building.
Background technique
In the Life cycle of whole building, the period longest of building operation and maintenance, currently, BIM planning,
Stages of design and construction using more, in the O&M stage using less, in order to avoid production BIM data in completion of works
Become new data fossil afterwards, BIM and 3DGIS are integrated, analyzes energy using the three-dimensional visualization and two-dimensional space of GIS
Power gives full play to BIM in the potential using value in O&M stage, make data not only can pipe, can more use.
At this stage when carrying out safety detection to the hidden facility of building, on the one hand with the increasing of building service life
Add, frequently, data of the building in the design and construction stage faces the situation that fewer and fewer people knows, related facility to personnel's replacement
It is faced with problem long neglected and in disrepair；On the other hand, traditional that the hidden installation security inspection of building is carried out according to design and construction drawing
The method of survey situations such as easily misreading, and is not easy to operate to the more demanding of staff's map reading and application ability, and takes off
When carrying out safety detection work from drawing, a large amount of under-enumerations, mistake are caused to look into, the problems such as mistake is repaired, to the life of owner and staff
Great harm is brought with property safety.
Summary of the invention
The purpose of the invention is to provide a kind of hidden installation security detection method of the building based on 3DGIS+BIM,
The present invention integrates 3DGIS and BIM, designed for the two dimensional code of building significant points augmented reality safety detection, knot
AR technology is closed, the space management advantage of 3DGIS, the component management advantage of BIM and the virtual three-dimensional model of AR are given full play to
Superposition with reality scene enhances display, to guarantee that staff intuitively, quickly and efficiently can position and detect hidden set
Apply existing safety problem.
To achieve the goals above, the technical solution of the present invention is as follows: the hidden installation security of building based on 3DGIS+BIM
Detection method, characterized by the following steps:
Step 1: the semantic conversion library of building BIM and 3DGIS；
Step 2:BIM data prediction；
Step 3: BIM data after conversion are loaded into the mobile terminal 3DGIS；
Step 4: the QR two dimensional code of design building object significant points augmented reality safety detection；
Step 5: the hidden installation security detection of building.
In the above-mentioned technical solutions, in step 1, according to CityGML and IFC data standard, IFC and CityGML class are defined
With the hierarchical system and corresponding relationship of class, including attribute information and semantic information corresponding relationship；Take attribute information and semantic letter into account
Breath defines the corresponding relationship of LOD4 in IFC and CityGML, utilizes correspondence setting LOD4 → LOD3 → LOD2 of LOD4
The conversion of → LOD1 → LOD0, to construct the semantic conversion library of BIM Yu each level of 3DGIS.
In the above-mentioned technical solutions, in step 2, according to the semantic conversion library of the BIM of building and 3DGIS, by BIM pattern number
According to being converted to CityGML data；
Geometry is carried out from the aspect of merging two from boundary line abbreviation and tri patch to the CityGML data after conversion
Abbreviation；Merged based on adjacent line-of-sight course and triangular grid dough sheet and geometry abbreviation is carried out to the CityGML data after conversion；
According to each component original material of BIM model and texture properties information, the material of the CityGML data after defining abbreviation
And texture properties.
In the above-mentioned technical solutions, in step 2, merged based on adjacent line-of-sight course and triangular grid dough sheet, after conversion
CityGML data carry out geometry abbreviation, while considering boundary line abbreviation and tri patch merging；Wherein, boundary line
Abbreviation by adjacent line-of-sight course carry out abbreviation, selecting any vertex of boundary line is starting point, according to clockwise to each vertex into
Line identifier successively selects at neighbouring 3 points in polygon edge boundary line as an analytical unit, calculates them since starting point
The angle of composed two straight lines, when angle is greater than or equal to given threshold, it is believed that three point on a straight line deletes intermediate point, still
So since starting point, successively select judged as an analytical unit at neighbouring 3 points in polygon edge boundary line；Work as folder
Angle be less than given threshold when, be not processed, select since second point in polygon edge boundary line adjacent to 3 points as one minute
Analysis unit continues to judge；Triangular grid dough sheet abbreviation is judged adjacent by the corner dimension between adjacent side tri patch altogether
Whether side tri patch is coplanar altogether, when angle is less than given threshold, then it is assumed that two tri patch are coplanar, by this adjacent side two altogether
Tri patch is identified, and then proceedes to that identified adjacent triangular faces are judged and identified, coplanar to being identified as
Vertex of surface structure of the tri patch by selecting reference projection face to merge coplanar tri patch is identified as, after connection merging
At a face；Traverse all tri patch, until all tri patch judgement finish, to the triangular facet not identified after traversal not into
Row processing.Boundary line and tri patch mergingization are carried out by the geometry to the CityGML data after BIM model conversion
Letter reduces BIM model data amount, improves load and the rendering efficiency of BIM model, solves to make due to the big data quantity of BIM model
The requirement of pairs of computer hardware is high, and the problem of be easy to cause program stuck and collapse.
In the above-mentioned technical solutions, in step 3, using the CityGML data after GDAL reading BIM model conversion, pass through
OsgEarth carries out loaded and displayed, and the BIM data after conversion are loaded into the mobile terminal 3DGIS based on osgEarth exploitation.
In the above-mentioned technical solutions, in step 4, the positioning to the hidden facility of building is about virtual and physical space
Co-located, this is related to position tracking, locating and tracking and ratio problems, by studying and design covers building emphasis portion
Position geospatial location, direction and building keypoint part threedimensional model corresponding with 3DGIS+BIM integrated system portion id information
QR two-dimension identification code.
In the above-mentioned technical solutions, in step 4, the QR two dimension of design building object significant points augmented reality safety detection
Building significant points are chosen and determined to code, the significance level for being primarily based on user demand and equipment；Then it is being integrated with BIM number
According to three-dimensional geographic space scene in roamed, position building significant points；By adjusting scene viewpoint, best view is determined
Angle, the spatial position and the BIM model ID number where azimuth information and viewpoint position of acquisition and saving scenario viewpoint, accordingly
Generate the two dimensional code for the detection of building significant points augmented reality.
In the above-mentioned technical solutions, in step 5, by scanning QR two-dimension identification code mobile terminal 3DGIS+BIM integrated system
In corresponding threedimensional model component information, the camera view that shows of adjustment mobile terminal 3DGIS+BIM application program and orientation, it is right
Underground or hidden facility carries out real-time locating and displaying within the walls etc., and to ground or metope visual setting transparency, by checking
The arrangement situation of hidden facility, and be aided with distance, angle, area equivalent and calculate and the spatial analysis such as buffer zone analysis, Overlap Analysis
Function, to realize the safety detection of the hidden facility augmented reality of building keypoint part based on 3DGIS+BIM.
The present invention has the advantage that
(1) the present invention is based on the BIM of CityGML and IFC data standard and 3DGIS data semantic to convert；Consider boundary line
The geometry simplifying method of data after the BIM model conversion that abbreviation and tri patch merge；Cover geospatial coordinates information,
Azimuth information, the building significant points two dimensional code design of component ID attribute information；According to the BIM data and 3DGIS of building
The conversion method of data, in conjunction with AR technical idea, passes through the building to design by BIM data integration into 3DGIS platform
Significant points two dimensional code carries out barcode scanning, adjusts and position view viewpoint and orientation that 3DGIS+BIM application program in mobile terminal is shown,
It realizes the Overlapping display of virtual BIM model and real three-dimensional scene, convenient for checking the arrangement situation of hidden facility, and is aided with basic
Amount is calculated and spatial analysis functions, to realize the peace of the hidden facility augmented reality of building keypoint part based on 3DGIS+BIM
Full inspection is surveyed, and the present invention intuitively rapidly can be positioned and be shown to the hidden facility of building, reduces staff to hidden
The fault that facility component carries out in detection process is covered to avoid because traditional to improve the efficiency of detection according to design working drawing
The problems such as paper carries out a large amount of under-enumerations existing for the method for the hidden installation security detection of building, mistake is looked into, mistake is repaired, gives owner and work
The safety of life and property of personnel brings great the problem of endangering, and the application for meeting the hidden installation security detection of building needs
It asks；
(2) with the promotion of the development of indoor positioning technologies and precision, present system can be not required to using QR two dimensional code into
Row BIM component auxiliary positioning upgrades to dynamic adjustment three-dimensional scenic viewpoint orientation and angle in real time using real time positioning technology
The hidden installation security detection of building；
(3) calculating of the invention and judgment method are simple, and speed is fast, versatile, can be applied not only to building
Hidden facility, can also be applied to the safety detection of inbuilt monitoring device, Urban Underground piping lane etc. in waterwork, be worth answering
With popularization.
Detailed description of the invention
Fig. 1 is BIM data of the present invention using production, carries out the hidden installation security inspection of building based on 3DGIS+BIM
Measuring tool body implementation flow chart.
Fig. 2 is the flow chart of BIM of the present invention and 3DGIS data semantic conversion process.
Fig. 3 is the two dimensional code design flow diagram detected for building significant points augmented reality.
Specific embodiment
The performance that the invention will now be described in detail with reference to the accompanying drawings, but they and do not constitute a limitation of the invention, only
It is for example.Keep advantages of the present invention more clear by explanation simultaneously and is readily appreciated that.
As shown in Figure 1, carrying out the building based on 3DGIS+BIM with the underground utilities BIM data instance that Revit is produced
Underground utilities facility carries out safety detection:
Step 1: the Revit underground utilities BIM data produced are converted into IFC format
BIM data file is opened in Revit software, BIM data are converted to IFC format by selection export IFC function；
Step 2: the IFC data being converted to are subjected to CityGML semantic conversion
According to the semantic conversion library (as shown in Figure 2) of the BIM of building and 3DGIS, IFC data derived from BIM model are turned
It is changed to CityGML data；
Step 3: the merging of triangular grid dough sheet is carried out to the CityGML data after conversion
It is 10 ° that dough sheet merging threshold, which is arranged, adjacent total by judging the corner dimension between adjacent side tri patch altogether
Whether side tri patch is coplanar, when angle is less than or equal to 10 °, then it is assumed that two tri patch are coplanar, by this adjacent side altogether
Two tri patch are identified, and then proceed to that identified adjacent triangular faces are judged and identified, coplanar to being identified as
Tri patch by select reference projection face merged coplanar tri patch is identified as, connection merge after vertex of surface
Constitute a face；All tri patch are traversed, until the judgement of all tri patch finishes, not to the triangular facet not identified after traversal
It is handled；
Step 4: the CityGML data after merging to tri patch carry out boundary line abbreviation
The angle threshold value that adjacent three point on a straight line is arranged is 160 °, and selecting any vertex of boundary line is starting point, according to suitable
When be identified for each vertex, since starting point, successively select in polygon edge boundary line adjacent to 3 points as one minute
Unit is analysed, the angle of their composed two straight lines is calculated, when angle is greater than or equal to 160 °, it is believed that three point on a straight line is deleted
Except intermediate point, still since starting point, successively select neighbouring 3 points in polygon edge boundary line as an analytical unit into
Row judgement；When angle is less than 160 °, be not processed, selected since second point neighbouring 3 points in polygon edge boundary line as
One analytical unit continues to judge；
Step 5: the CityGML data after load and visualization lightweight
CityGML formatted data after parsing Revit data conversion and lightweight using GDAL, in independent research
Load and three-dimensional visualization in 3DGIS platform mobile terminal, the geographical ring of CityGML data and region after intuitive expression lightweight
Border；
Step 6: building building significant points QR two dimensional code
According to the method for design building object significant points safety detection QR two dimensional code as shown in Figure 3, building is covered in building
Object keypoint part geospatial location, direction and building keypoint part threedimensional model corresponding with 3DGIS+BIM integrated system
The QR two-dimension identification code of portion's id information；
Step 7: the QR two dimensional code of scanning building significant points safety detection, adjustment and positioning virtual three-dimensional scene viewpoint
Orientation
By scanning QR two dimensional code, adjustment and viewpoint position and orientation in positioning virtual three-dimensional field；
Step 8: transparent visual processing, the underground concealed pipeline information of locating and displaying are carried out to ground
It is 60% that ground transparency, which is arranged, carries out transparent visual processing to ground, and show underground concealed pipeline information,
The intuitive distribution for grasping pipeline, convenient for the lookup, positioning and safety detection of hidden pipeline；
Step 9: utilizing the spaces such as spatial measurings and buffer zone analysis, Overlap Analysis such as distance, angle and area measuring point
The functions such as analysis, realize angle between pipeline, oblique distance, net level length, hang down away from and pipe cross-sectional area etc. accurate measurement, assist into
The safety detection of the underground concealed pipeline facility of row.
It, can be when carrying out safety detection to the underground concealed pipeline facility of building, using virtual after the present embodiment
The superposition of threedimensional model and reality scene enhances display, can intuitively quickly by hidden pipeline facility in Virtual Geographic Environment into
Row positioning and displaying obtain the relative positional relationship between pipeline by spatial measuring and analysis, guarantee that staff can be quasi-
Really, safety problem existing for pipeline facility is efficiently searched and detected, is built relative to traditional according to design and construction drawing
The method for building the hidden pipeline facility safety detection of object can effectively avoid under-enumeration, the problems such as mistake is looked into, mistake is repaired, and improve pipeline facility peace
The precision and efficiency that full inspection is surveyed.
The explanation of technical term relevant to the technical program:
3DGIS is the abbreviation of three-dimension GIS, it is a three-dimensional space GIS-Geographic Information System, is able to achieve and reflects in real time, in real time
The high-quality such as refraction, dynamic shadow, real-time rendering 3D rendering true to nature.
GIS-Geographic Information System (Geographic Information System or Geo- Information system,
It GIS) is sometimes referred to as GeoscienceInformation System, it is a kind of specific highly important space information system, it is in computer
Hardware and software system support under, to the related geographic distribution data in earth surface layer (including atmosphere) space all or in part into
Row acquisition, storage, management, technological system operation, analyzed, be shown and described.
Building Information Model (Building Information Modeling, BIM) technology is that one kind is set applied to engineering
Meter is built, the digitization tool of management, is integrated by digitization to building, informationization model, project planning, operation and
It is shared and is transmitted in the lifecycle process of maintenance, engineers and technicians is made to make correct understanding to various architecture informations
With efficient reply, the base of collaborative work is provided for design team and each side's construction bodies including building, unit of operation
Plinth plays a significant role improving production efficiency, save the cost and shortening the construction period aspect.
CityGML is a kind of format for virtual three-dimensional city model data exchange and storage, CityGML be to
Express the generic data model of three-dimensional city template.It defines the type and phase of the most common earth's surface target in city and region
Mutual relation, and the attribute for accounting for the geometry of target, topology, semanteme, appearance etc., including between thematic type level,
Relationship and space attribute between polymerization, target etc.；These thematic informations are not only a kind of GIF(Graphic Interchange format), while can be with
Virtual three-dimensional city model is used for the advanced analysis in various application fields, such as simulation, Urban Data are excavated, facility pipe
Reason, special topic topic inquiry etc.；CityGML is a kind of open data model, it realizes virtual three-dimensional city model based on XML
Data are stored and are exchanged, it is a kind of application model of GML 3, GML 3 be worked out by OGC and ISO TC 211 it is expansible
International standard can be used for Spatial data visualization.
The abbreviation of IFC (Industry Foundation Classes) industrial foundation class；It is IAI tissue (the
International Alliance for Interoperability) --- the title of world collaboration Alliance Establishment；It is logical
IFC is crossed, communication, productivity, time, cost and quality are promoted in the whole life cycle of construction project, for the building in the whole world
Profession is promoted with the process in mechanical discipline and establishes the benchmark of a universal significance in information sharing；Nowadays had more and more
Building trade Related product provide the data exchange interface of IFC standard so that multi-specialized design, management integration it is whole
Synthesize reality；As the data model standard for being applied to AEC/FM every field, IFC model not only includes that those are seen
See, tangible Architectural Elements (such as beam, column, plate, furred ceiling, furniture etc.), also include those abstract concepts (such as
Plan, space, tissue, cost etc.)；IFC model architecture is made of four levels, is successively resource layer from top to bottom
(Resource Layer), core layer (Core Layer), alternation of bed (Interoperability Layer), field layer
(Domain Layer)；All include a series of information describing module in every layer, and abide by a rule: each level can only
The information resources of same level and lower layer are quoted, and the resource on upper layer cannot be quoted, when upper resource changes, lower layer is not
It will receive influence.
Industrial design (Industrial Design), abbreviation ID design, refers to based on engineering, aesthetics, economics to work
Industry product is designed.
QR code is one kind of two-dimensional bar code, abbreviation of the QR from English Quick Response, the i.e. meaning of fast reaction,
Wish that QR code can allow its content quickly to be decoded from inventor；QR code can store additional information than common bar code, also be not necessarily to picture
Adjusting to a line scanner is needed in scanning as common bar code；This two dimensional code of QR code can quickly be read, with bar code before
It compares, QR code can store richer information, including to text, the address URL and other kinds of data encryption.QR code is in pros
Shape, only black-and-white two color.At wherein 3 of 4 corners, be printed on it is smaller, as the square pattern of Back Word；This 3 are to aid in solution
The pattern of code software positioning, user need not be aligned, no matter scan at any angle, data still can be correctly read.
Augmented reality (Augmented Reality, abbreviation AR), also referred to as Augmented Reality (TaiWan, China).Enhancing is existing
Real technology, it is a kind of by " seamless " the integrated new technology of real world information and virtual world information, is originally in reality
It is difficult the entity information (visual information, sound, taste, tactile etc.) experienced in the certain time spatial dimension in the world, passes through
The science and technology such as computer are superimposed after analog simulation again, virtual Information application to real world are perceived by human sensory,
To reach the sensory experience of exceeding reality；True environment and virtual object have been added to the same picture or sky in real time
Between exist simultaneously.
LOD technology, that is, Levels of Detail abbreviation, means detail；LOD technology refers to according to object model
Node the location of in display environment and different degree, determine the resource allocation of object rendering, reduce insignificant object
Face number and degrees of detail, to obtain efficient rendering operation；" cybercity construction technology " specification regulation, city three-dimensional building
Model can be divided into tetra- levels of LOD1, LOD2, LOD3, LOD4 by the difference of performance details, and wherein LOD1 is body block models, LOD2
Refer to that basic roughcast, LOD3 refer to that master pattern, LOD4 refer to refined model.
OsgEarth is realized on the basis of osg based on the three-dimensional digital earth engine library of d engine osg exploitation
Tile dispatches plug-in unit, and optional quaternary tree dispatches plug-in unit, more geodatas load plug-in units (including GDAL (Geospatial
Data Abstraction Library is an open source raster spatial data transformation warehouse under X/MIT permission agreement, its benefit
The various file formats supported are expressed with abstract data model, there are also series of orders row tools for it to carry out data conversion
And processing), ogr (being an elementary factor library of open source C++, a part in the library GDAL), WMS (Warehouse
Management System, warehouse management system), TMS (Transportation Management System, logistics transportation
Management system), filesystem (file system) etc.), plug-in unit is converted in conjunction with a set of Geographical projections, this makes it possible to realize height
Effect processing load scheduling geodata realizes the three-dimensional earth in three-dimensional tellurian display；OpenSceneGraph is (referred to as
OSG OpenGL technological development) is used, is a set of application programming interfaces (Application based on C++ platform
Programming Interface, API), it allows programmer that can more quickly and conveniently create high-performance, cross-platform friendship
Mutual formula graphic package.
GDAL (Geospatial Data Abstraction Library) is opening under X/MIT permission agreement
Source raster spatial data transformation warehouse；It expresses the various file formats supported using abstract data model；There are also a systems for it
Column command-line tool carries out data conversion and processing.
Other unaccounted parts belong to the prior art.
Claims (8)
1. the hidden installation security detection method of building based on 3DGIS+BIM, characterized by the following steps:
Step 1: the semantic conversion library of building BIM and 3DGIS；
Step 2:BIM data prediction；
Step 3: BIM data after conversion are loaded into the mobile terminal 3DGIS；
Step 4: the QR two dimensional code of design building object significant points augmented reality safety detection；
Step 5: the hidden installation security detection of building.
2. the hidden installation security detection method of the building according to claim 1 based on 3DGIS+BIM, feature exist
In: in step 1, according to CityGML and IFC data standard, define hierarchical system and corresponding pass of the IFC with CityGML class and class
System, including attribute information and semantic information corresponding relationship；Take attribute information and semantic information into account, defines in IFC and CityGML
The corresponding relationship of LOD4, using correspondence setting LOD4 → LOD3 → LOD2 → LOD1 → LOD0 conversion of LOD4, thus
Construct the semantic conversion library of BIM and each level of 3DGIS.
3. the hidden installation security detection method of the building according to claim 2 based on 3DGIS+BIM, feature exist
In: it is CityGML data by BIM model data transformation according to the semantic conversion library of the BIM of building and 3DGIS in step 2；
Geometry is carried out from the aspect of merging two from boundary line abbreviation and tri patch to the CityGML data after conversion
Letter；Merged based on adjacent line-of-sight course and triangular grid dough sheet and geometry abbreviation is carried out to the CityGML data after conversion；
According to each component original material of BIM model and texture properties information, the material and texture of the CityGML data after defining abbreviation
Attribute.
4. the hidden installation security detection method of the building according to claim 3 based on 3DGIS+BIM, feature exist
In: in step 2, merged based on adjacent line-of-sight course and triangular grid dough sheet, geometry is carried out to the CityGML data after conversion
Abbreviation, while considering boundary line abbreviation and tri patch merging；Wherein, the abbreviation of boundary line passes through adjacent line-of-sight course
Letter, selecting any vertex of boundary line is starting point, according to being identified clockwise to each vertex, since starting point, successively
It selects at neighbouring 3 points in polygon edge boundary line as an analytical unit, calculates the angle of their composed two straight lines,
When angle is greater than or equal to given threshold, it is believed that three point on a straight line is deleted intermediate point and successively selected still since starting point
Neighbouring 3 points in polygon edge boundary line are judged as an analytical unit；When angle is less than given threshold, does not do and locate
Reason selects continue to judge as an analytical unit at neighbouring 3 points in polygon edge boundary line since second point；Triangle
Whether tri patch is coplanar when grid dough sheet abbreviation judges adjacent total by the adjacent corner dimension altogether between tri patch, when
Angle be less than given threshold when, then it is assumed that two tri patch are coplanar, by this it is adjacent altogether two tri patch of side be identified, then after
It is continuous that identified adjacent triangular faces are judged and identified, pass through selection reference projection to coplanar tri patch is identified as
Face is merged coplanar tri patch is identified as, and the vertex of surface after connection merges constitutes a face；Traverse all triangular facets
Piece, until the judgement of all tri patch finishes, to the triangular facet not identified after traversal without processing.
5. the hidden installation security detection method of the building according to claim 4 based on 3DGIS+BIM, feature exist
In: in step 3, the CityGML data after BIM model conversion is read using GDAL will by osgEarth progress loaded and displayed
BIM data after conversion are loaded into the mobile terminal 3DGIS based on osgEarth exploitation.
6. the hidden installation security detection method of the building according to claim 5 based on 3DGIS+BIM, feature exist
In: in step 4, the positioning to the hidden facility of building is about virtual and physical space co-located, this is related to position
Tracking, locating and tracking and ratio problems, by study and design cover building keypoint part geospatial location, direction and
The QR two-dimension identification code of building keypoint part threedimensional model corresponding with 3DGIS+BIM integrated system portion id information.
7. the hidden installation security detection method of the building according to claim 6 based on 3DGIS+BIM, feature exist
In: in step 4, the QR two dimensional code of design building object significant points augmented reality safety detection is primarily based on user demand and sets
Building significant points are chosen and determined to standby significance level；Then in the three-dimensional geographic space scene for being integrated with BIM data
It is roamed, positions building significant points；By adjusting scene viewpoint, optimal viewing angle is determined, obtain and saving scenario viewpoint
Spatial position and azimuth information and viewpoint position where BIM model ID number, accordingly generate for building significant points
The two dimensional code of augmented reality detection.
8. the hidden installation security detection method of the building according to claim 7 based on 3DGIS+BIM, feature exist
In: in step 5, believed by corresponding threedimensional model component in scanning QR two-dimension identification code mobile terminal 3DGIS+BIM integrated system
It is aobvious to carry out positioning in real time to hidden facility for breath, the camera view and orientation that adjustment mobile terminal 3DGIS+BIM application program is shown
Show, and to ground or metope visual setting transparency, by checking the arrangement situation of hidden facility, and the amount of being aided with is calculated and space
Analytic function, to realize the safety detection of the hidden facility augmented reality of building keypoint part based on 3DGIS+BIM.
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| CN110675508A (en) * | 2019-09-10 | 2020-01-10 | 长江勘测规划设计研究有限责任公司 | BIM model geometric figure simplification method |
| CN110717672A (en) * | 2019-10-10 | 2020-01-21 | 贵州百胜工程建设咨询有限公司 | BIM-based operation and maintenance management system |
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