CN116894912A - Virtual construction sand table construction method and device based on three-dimensional GIS and BIM integration - Google Patents
Virtual construction sand table construction method and device based on three-dimensional GIS and BIM integration Download PDFInfo
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Abstract
The application relates to a virtual construction sand table construction method, a device, computer equipment, a storage medium and a computer program product based on three-dimensional GIS and BIM integration. The application can improve the model precision of the virtual construction sand table. The method comprises the following steps: acquiring aerial photo information and image control point information of a target area; according to the aerial photo information, performing space three calculation to obtain a three-dimensional model corresponding to the target area; importing the image control point information into a three-dimensional model, and correcting the three-dimensional model after the image control point information is imported; performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result; acquiring a target BIM model constructed according to construction drawing information of a target construction project; and carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
Description
Technical Field
The application relates to the technical field of digital construction, in particular to a virtual construction sand table construction method, device, computer equipment, storage medium and computer program product based on integration of three-dimensional GIS and BIM.
Background
With the development of computer software technology, a technology for constructing a three-dimensional city model by utilizing computer aided drawing software and adopting a manual interaction mode is developed.
In the conventional technology, when a three-dimensional city model is constructed, the related parameters of a building can only be obtained through manual estimation or measurement, and then the model is constructed by utilizing the parameters.
However, the existing modeling mode has the defects of lack of ground object elevation information, poor building model elevation precision, poor roof fineness and the like, so that the three-dimensional city model constructed in the prior art has lower precision, and the requirement of building engineering on model precision is difficult to meet.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a virtual construction sand table construction method, apparatus, computer device, computer readable storage medium and computer program product based on integration of three-dimensional GIS and BIM, which can improve model accuracy.
In a first aspect, the application provides a virtual construction sand table construction method based on integration of three-dimensional GIS and BIM. The method comprises the following steps:
acquiring aerial photo information and image control point information of a target area; the target area is an area where a target construction project identified in advance is located;
Performing space three calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area;
importing the image control point information into the three-dimensional model, and correcting the three-dimensional model after importing the image control point information;
performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result;
acquiring a target BIM model constructed according to construction drawing information of the target construction project;
and carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
In one embodiment, the performing space three calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area includes:
constructing an initial three-dimensional model containing the aerial photo information according to a preset template model and the aerial photo information; performing space three calculation on the initial three-dimensional model to obtain space position information contained in the target area; and obtaining a three-dimensional model corresponding to the target area according to the initial three-dimensional model and the spatial position information.
In one embodiment, the correcting the three-dimensional model after the image control point information is imported includes:
determining associated target picture information in the three-dimensional model according to the image control point information; and correcting the puncture point in the target picture information according to the image control point information.
In one embodiment, the performing the second space-third calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to the second space-third calculation result, includes:
performing secondary space three-dimensional calculation on the corrected three-dimensional model to obtain updated spatial position information; generating a point cloud file in a preset file format according to the updated spatial position information, and taking the point cloud file as a secondary space three calculation result; and obtaining the GIS space model according to the corrected three-dimensional model and the secondary space three-dimensional calculation result.
In one embodiment, the obtaining the target BIM model constructed according to the construction drawing information of the target construction project includes:
building information contained in the target construction project and building architecture information corresponding to each building are obtained according to the construction drawing information; constructing a plurality of BIM models corresponding to the buildings according to the building information and the building architecture information; model merging is carried out on the BIM models to obtain a merged model; and identifying the relative position information of each BIM model in the merging model to obtain a merging model containing the relative position information as the target BIM model.
In one embodiment, the fusing the GIS spatial model and the target BIM model to obtain the virtual construction sand table of the target construction project includes:
performing coordinate system conversion processing on the GIS space model and the target BIM model to obtain a GIS space model and a target BIM model with a unified coordinate system; determining coordinate information of a target point location in a GIS space model and a target BIM model which are unified in the coordinate system respectively; and carrying out point-to-point model fusion processing on the GIS space model and the target BIM model which are unified in the coordinate system according to the coordinate information of the target point location, and obtaining the virtual construction sand table.
In a second aspect, the application further provides a virtual construction sand table construction device based on integration of the three-dimensional GIS and the BIM. The device comprises:
the information acquisition module is used for acquiring aerial photo information and image control point information of the target area; the target area is an area where a target construction project identified in advance is located;
the aerial three-calculation module is used for carrying out aerial three-calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area;
the model correction module is used for importing the image control point information into the three-dimensional model and correcting the three-dimensional model after the image control point information is imported;
The secondary calculation module is used for carrying out secondary air-space three calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary air-space three calculation result;
the model acquisition module is used for acquiring a target BIM model constructed according to construction drawing information of the target construction project;
and the model fusion module is used for carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:
acquiring aerial photo information and image control point information of a target area; the target area is an area where a target construction project identified in advance is located; performing space three calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area; importing the image control point information into the three-dimensional model, and correcting the three-dimensional model after importing the image control point information; performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result; acquiring a target BIM model constructed according to construction drawing information of the target construction project; and carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
acquiring aerial photo information and image control point information of a target area; the target area is an area where a target construction project identified in advance is located; performing space three calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area; importing the image control point information into the three-dimensional model, and correcting the three-dimensional model after importing the image control point information; performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result; acquiring a target BIM model constructed according to construction drawing information of the target construction project; and carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of:
Acquiring aerial photo information and image control point information of a target area; the target area is an area where a target construction project identified in advance is located; performing space three calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area; importing the image control point information into the three-dimensional model, and correcting the three-dimensional model after importing the image control point information; performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result; acquiring a target BIM model constructed according to construction drawing information of the target construction project; and carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
The virtual construction sand table construction method, the device, the computer equipment, the storage medium and the computer program product based on the integration of the three-dimensional GIS and the BIM are realized by acquiring the aerial photo information and the image control point information of the target area; according to the aerial photo information, performing space three calculation to obtain a three-dimensional model corresponding to the target area; importing the image control point information into a three-dimensional model, and correcting the three-dimensional model after the image control point information is imported; performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result; acquiring a target BIM model constructed according to construction drawing information of a target construction project; and carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project. Thus, three-dimensional modeling is carried out on the target area through two-time space three-dimensional calculation, and the model precision of the GIS space model is greatly improved; carrying out model fusion on the GIS space model and the target BIM model, and realizing accurate fusion of the BIM model and the GIS model by unifying the construction drawing coordinates and the aerial GIS coordinates, thereby constructing a virtual construction sand table capable of meeting the precision requirement of the building engineering; in addition, related data are acquired in an auxiliary mode through tools such as unmanned aerial vehicles, unmanned automobiles and the like, a large amount of manual interaction modeling is not needed, and the model precision of the virtual construction sand table is further improved.
Drawings
FIG. 1 is a schematic flow diagram of a virtual construction sand table construction method based on three-dimensional GIS and BIM integration in one embodiment;
FIG. 2 is a schematic diagram of a virtual construction sand table in one embodiment;
FIG. 3 is a flowchart illustrating steps for performing fusion processing on a GIS space model and a target BIM model in one embodiment;
FIG. 4 is a schematic flow chart of a method for constructing a virtual construction sand table based on three-dimensional GIS and BIM integration in another embodiment;
FIG. 5 is a schematic flow chart of a method for constructing a virtual construction sand table based on three-dimensional GIS and BIM integration in yet another embodiment;
FIG. 6 is a block diagram of a virtual construction sand table construction device based on integration of three-dimensional GIS and BIM in one embodiment;
fig. 7 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In one embodiment, as shown in fig. 1, a virtual construction sand table construction method based on integration of three-dimensional GIS and BIM is provided, and this embodiment is illustrated by applying the method to a terminal, it can be understood that the method can also be applied to a server, and can also be applied to a system including the terminal and the server, and is implemented through interaction between the terminal and the server. The terminal can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers and the like; the server may be implemented as a stand-alone server or as a server cluster composed of a plurality of servers. In this embodiment, the method includes the steps of:
Step S101, acquiring aerial photo information and image control point information of a target area; the target area is an area where a pre-identified target construction project is located.
The aerial photo information refers to a collection of information such as a photo taken by an unmanned aerial vehicle, a coordinate system corresponding to an aerial survey area, an elevation reference parameter, a longitude zone and the like.
The image control point information refers to a text information set formed by editing parameter information such as the precision, the quantity, the coordinate values and the elevation of the image control points.
Specifically, the terminal responds to a virtual construction sand table construction request based on three-dimensional GIS and BIM integration, recognizes a target area according to the request instruction, and acquires aerial photo information and image control point information of the target area.
And step S102, performing space three calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area.
The space three calculation is a process of calculating the camera position and posture and sparse point cloud of the photographed target at the camera imaging moment by utilizing the space geometric relation between the image and the photographed target in the photogrammetry and through the corresponding relation between the image point and the photographed object.
Where the three-dimensional model is a polygonal representation of the object, it may be rendered at different levels of detail or depicted in different ways, according to a simple wireframe, typically displayed with a computer or other video device.
Specifically, the terminal imports aerial photo information into computer aided drawing software, and an initial three-dimensional model is built according to a preset template model and the aerial photo information; and performing space three calculation on the initial three-dimensional model, and updating the initial three-dimensional model according to a calculation result to obtain the three-dimensional model corresponding to the target area.
Step S103, the image control point information is imported into the three-dimensional model, and the three-dimensional model after the image control point information is imported is corrected.
Specifically, the terminal imports image control point information into the three-dimensional model through computer aided drawing software, determines associated target picture information in the three-dimensional model according to the image control point information, and corrects the model accuracy of the three-dimensional model through calibration of the target picture information.
For example, the terminal introduces image control point information into the three-dimensional model through the intelligent map software in the Xinjiang, determines associated target picture information in the three-dimensional model according to the image control point information, and corrects the puncture point in the target picture information so as to realize correction of the model precision of the three-dimensional model.
And step S104, performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result.
The GIS (Geographic Information System ) space model refers to a three-dimensional space model constructed based on the geographic information system, wherein the three-dimensional space model comprises three-dimensional data information of the external outline of a building, outdoor environment temperature information and the like, and can be used for assisting project decision, optimizing project design and construction.
Specifically, the terminal acquires a corrected three-dimensional model, performs secondary space three-dimensional calculation in the corrected three-dimensional model, and generates a corresponding point cloud file as a secondary space three-dimensional calculation result; and updating and perfecting the corrected three-dimensional model according to the secondary space three-calculation result to obtain a corresponding GIS space model.
The point cloud refers to a massive point set expressing target space distribution and target surface characteristics under the same space reference system. The point cloud obtained according to the laser measurement principle comprises three-dimensional coordinates and laser reflection intensity. The point cloud obtained according to the photogrammetry principle comprises three-dimensional coordinates and color information; the point cloud file can be regarded as a three-dimensional picture.
Step S105, obtaining a target BIM model constructed according to construction drawing information of a target construction project.
The BIM model (Building Information Modeling, building information model) is a new tool for architecture, engineering and civil engineering, and mainly contains various parameter information inside the building.
Specifically, the terminal acquires construction drawing information of a target construction project, extracts building information and building architecture information corresponding to each building contained in the target construction project from the construction drawing information, and constructs a target BIM model according to the building information and the building architecture information.
And S106, carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
The virtual construction sand table is a digital virtual sand table system which adopts digital three-dimensional animation content to display, wherein the sand table content is manufactured by utilizing three-dimensional animation, and the sand table system is displayed in various modes such as large-screen projection (arc screen/ring screen), electronic display screen, holographic projection and the like.
Specifically, the terminal performs coordinate system conversion processing on the GIS space model and the target BIM model to realize the coordinate system unification of the GIS space model and the target BIM model; and (3) through searching coordinates of the target point positions, realizing point-to-point model fusion, and obtaining the virtual construction sand table of the target construction project.
According to the virtual construction sand table construction method based on the integration of the three-dimensional GIS and the BIM, aerial photo information and image control point information of a target area are obtained; according to the aerial photo information, performing space three calculation to obtain a three-dimensional model corresponding to the target area; importing the image control point information into a three-dimensional model, and correcting the three-dimensional model after the image control point information is imported; performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result; acquiring a target BIM model constructed according to construction drawing information of a target construction project; and carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project. Thus, three-dimensional modeling is carried out on the target area through two-time space three-dimensional calculation, and the model precision of the GIS space model is greatly improved; carrying out model fusion on the GIS space model and the target BIM model, and realizing accurate fusion of the BIM model and the GIS model by unifying the construction drawing coordinates and the aerial GIS coordinates, thereby constructing a virtual construction sand table capable of meeting the precision requirement of the building engineering; in addition, related data are acquired in an auxiliary mode through tools such as unmanned aerial vehicles, unmanned automobiles and the like, a large amount of manual interaction modeling is not needed, and the model precision of the virtual construction sand table is further improved.
In one embodiment, in the step S102, according to the aerial photo information, an air three calculation is performed to obtain a three-dimensional model corresponding to the target area, which specifically includes the following steps: constructing an initial three-dimensional model containing aerial photo information according to a preset template model and the aerial photo information; performing space three calculation on the initial three-dimensional model to obtain space position information contained in a target area; and obtaining a three-dimensional model corresponding to the target area according to the initial three-dimensional model and the space position information.
The preset template model refers to a three-dimensional template model designed in advance for GIS modeling in computer aided drawing software.
The spatial position information refers to a spatial geometric relationship between an image and a photographed target in a photographed image.
Specifically, the terminal imports aerial photo information into a preset template model, an initial three-dimensional model is constructed by utilizing the aerial photo information, and the space geometrical relationship existing in the initial three-dimensional model is analyzed and calculated to obtain space position information; and updating and perfecting the initial three-dimensional model according to the space position information to obtain the three-dimensional model corresponding to the target area.
In this embodiment, an initial three-dimensional model is first constructed according to a preset template model and aerial photo information, and then the initial three-dimensional model is supplemented by using spatial position information obtained by air three calculation, so that a three-dimensional model corresponding to a target area is accurately obtained.
In one embodiment, in the step S103, the correction of the three-dimensional model after the image control point information is introduced specifically includes the following steps: determining associated target picture information in the three-dimensional model according to the image control point information; and correcting the puncture point in the target picture information according to the image control point information.
The target picture refers to a picture related to the image control point in the three-dimensional model; the target picture information refers to information such as pixels, precision, position, and boundary lines of the picture.
Wherein, the stab point is a measurement term, which means that in an aerial photograph, an embroidery needle is perpendicular to the front surface of the photograph, and a small hole is stabbed on an image of an apparent object point at the corner of the right boundary line.
Specifically, the terminal identifies a target picture in the three-dimensional model according to the image control point information, and determines associated target picture information in the three-dimensional model; and determining the puncture point in the target picture information, and correcting the puncture point in the target picture information according to the image control point information.
In this embodiment, by correcting the puncture point in the target picture information according to the image control point information, correction of the model accuracy is achieved, and thus the accuracy of the three-dimensional model is improved.
In one embodiment, in the step S104, a second space-third calculation is performed on the corrected three-dimensional model, and a corresponding GIS space model is constructed according to the result of the second space-third calculation, which specifically includes the following steps: performing secondary space three-dimensional calculation on the corrected three-dimensional model to obtain updated spatial position information; generating a point cloud file in a preset file format according to the updated spatial position information, and taking the point cloud file as a secondary space three calculation result; and obtaining the GIS space model according to the corrected three-dimensional model and the secondary space three-dimensional calculation result.
The point cloud file with the preset file format can be an LAS point cloud file, the LAS file format is a public file format for exchanging three-dimensional point cloud data, and the LAS point cloud file is a binary file packaged according to several specifications, wherein the LAS point cloud file mainly comprises two parts: and (5) point cloud specification and point cloud point data.
Specifically, the terminal acquires a corrected three-dimensional model, and performs secondary space three-dimensional calculation in the corrected three-dimensional model to obtain updated spatial position information; generating a point cloud file in a preset file format according to the updated spatial position information, and taking the point cloud file as a secondary space three calculation result; and carrying out secondary correction on the corrected three-dimensional model according to the secondary space three-dimensional calculation result to obtain a secondary corrected three-dimensional model which is used as a GIS space model.
In this embodiment, the three-dimensional model is corrected by performing the second space-third calculation, and then the GIS space model is obtained according to the corrected three-dimensional model and the second space-third calculation result, so that the accuracy of the three-dimensional model is further improved, and the GIS space model is more accurately obtained.
In one embodiment, in the step S105, a target BIM model constructed according to construction drawing information of a target construction project is obtained, and the method specifically includes the following steps: building information contained in the target construction project and building architecture information corresponding to each building are obtained according to the construction drawing information; constructing a plurality of BIM models corresponding to each building according to the building information and the building architecture information; model merging is carried out on the BIM models to obtain a merged model; and identifying the relative position information of each BIM model in the combined model to obtain a combined model containing the relative position information as a target BIM model.
The construction drawing information refers to a CAD (Computer Aided Drafting, computer-aided drawing software) drawing of the target construction project.
The building information is information such as the number of buildings and the coordinate positions of the buildings included in the target construction project.
The building architecture information refers to information such as the number of components in the building, the positional relationship between the components, and the overall layout of all the components.
Specifically, the terminal acquires construction drawing information of a target construction project, and identifies building information contained in the target construction project and building architecture information corresponding to each building from the construction drawing information; constructing a plurality of BIM models corresponding to each building according to the building information and the building architecture information; carrying out model combination on a plurality of BIM models according to construction drawing information to obtain a combined model; and accurately positioning the relative positions of all the monomer buildings in the merging model, and constructing a target BIM model.
In the embodiment, a plurality of BIM models corresponding to each building are constructed according to building information and building architecture information; model merging is carried out on the BIM models to obtain a merged model; and identifying the relative position information of each BIM model in the combined model to obtain the combined model containing the relative position information, thereby accurately constructing the target BIM model.
In one embodiment, as shown in fig. 3, in the step S106, fusion processing is performed on the GIS space model and the target BIM model to obtain a virtual construction sand table of the target construction project, which specifically includes the following steps:
Step S301, performing coordinate system conversion processing on the GIS space model and the target BIM model to obtain a GIS space model and a target BIM model with a unified coordinate system.
Step S302, determining coordinate information of the target point location in a GIS space model and a target BIM model with a unified coordinate system respectively.
And step S303, performing point-to-point model fusion processing on the GIS space model and the target BIM model of the coordinate system according to the coordinate information of the target point location, and obtaining the virtual construction sand table.
The target point positions are preset key point positions in the GIS space model and the target BIM model.
Specifically, the terminal extracts a coordinate system of the GIS space model and the target BIM model respectively, and converts the extracted coordinate system to realize the coordinate system unification of the GIS space model and the target BIM model; determining coordinate information of a target point location in a GIS space model and a target BIM model with a unified coordinate system respectively; and carrying out coordinate searching according to the coordinate information of the target point positions, and respectively and accurately combining certain two points with the same coordinate values of the target BIM model and the GIS space model so as to realize point-to-point model fusion of the GIS space model and the target BIM model with a unified coordinate system and obtain the virtual construction sand table.
In this embodiment, a point-to-point model fusion process is performed on a GIS space model and a target BIM model of a coordinate system according to coordinate information of a target point, so that precise fusion of the BIM and the GIS model is achieved, and a virtual construction sand table is accurately constructed.
In one embodiment, as shown in fig. 4, another virtual construction sand table construction method based on integration of three-dimensional GIS and BIM is provided, which specifically includes the following steps:
step S401, acquiring aerial photo information and image control point information of a target area; the target area is an area where a pre-identified target construction project is located.
Step S402, constructing an initial three-dimensional model containing aerial photo information according to a preset template model and aerial photo information; performing space three calculation on the initial three-dimensional model to obtain space position information contained in a target area; and obtaining a three-dimensional model corresponding to the target area according to the initial three-dimensional model and the space position information.
Step S403, importing the image control point information into a three-dimensional model, and determining associated target picture information in the three-dimensional model according to the image control point information; and correcting the puncture point in the target picture information according to the image control point information.
Step S404, performing secondary space three-dimensional calculation on the corrected three-dimensional model to obtain updated spatial position information; generating a point cloud file in a preset file format according to the updated spatial position information, and taking the point cloud file as a secondary space three calculation result; and obtaining the GIS space model according to the corrected three-dimensional model and the secondary space three-dimensional calculation result.
Step S405, building information contained in a target construction project and building architecture information corresponding to each building are obtained according to construction drawing information; constructing a plurality of BIM models corresponding to each building according to the building information and the building architecture information; model merging is carried out on the BIM models to obtain a merged model; and identifying the relative position information of each BIM model in the combined model to obtain a combined model containing the relative position information as a target BIM model.
Step S406, carrying out coordinate system conversion processing on the GIS space model and the target BIM model to obtain a GIS space model and a target BIM model with a unified coordinate system; determining coordinate information of a target point location in a GIS space model and a target BIM model with a unified coordinate system respectively; and carrying out point-to-point model fusion processing on the GIS space model and the target BIM model of the coordinate system according to the coordinate information of the target point location, thereby obtaining the virtual construction sand table.
According to the virtual construction sand table construction method based on the integration of the three-dimensional GIS and the BIM, the three-dimensional modeling is carried out on the target area through two-time space three-calculation, so that the model precision of the GIS space model is greatly improved; carrying out model fusion on the GIS space model and the target BIM model, and realizing accurate fusion of the BIM model and the GIS model by unifying the construction drawing coordinates and the aerial GIS coordinates, thereby constructing a virtual construction sand table capable of meeting the precision requirement of the building engineering; in addition, related data are acquired in an auxiliary mode through tools such as unmanned aerial vehicles, unmanned automobiles and the like, a large amount of manual interaction modeling is not needed, and the model precision of the virtual construction sand table is further improved.
In order to clearly illustrate the virtual construction sand table construction method based on the integration of the three-dimensional GIS and the BIM provided by the embodiment of the application, the virtual construction sand table construction method based on the integration of the three-dimensional GIS and the BIM is specifically illustrated by a specific embodiment. In one embodiment, as shown in fig. 5, the application further provides a virtual construction sand table construction method based on integration of three-dimensional GIS and BIM, which specifically comprises the following steps:
step 1: and (3) determining the requirement, planning a navigation measurement area and setting an image control point according to the requirement, and performing unmanned aerial vehicle flight preparation.
Step 2: collecting aerial survey data (aerial photo information and image control point information), editing the collected image control point information into a text, importing the aerial photo information into intelligent map software in Xingjiang and performing air three calculation; according to the three-dimensional calculation result, selecting and establishing a three-dimensional model corresponding to the aerial survey area, importing the image control point information into the three-dimensional model, and correcting the thorn points; and performing secondary air three calculation and generating an LAS point cloud file to obtain a corresponding GIS space model.
Step 3: determining model precision, splitting a to-be-constructed object according to construction drawing information, and respectively constructing a plurality of sub-models; and combining the multiple sub-models, and accurately positioning the relative positions of all the single buildings to obtain a target BIM model.
Step 4: and importing an LAS point cloud model into RECAP modeling software, exporting a point cloud file, and carrying out coordinate system unification on the GIS space model and the target BIM model, so as to realize point-to-point model fusion through coordinate searching, and successfully constructing the virtual construction sand table.
The beneficial effects brought by the embodiment include:
(1) According to the method, the GIS model is high in precision, the unmanned aerial vehicle is matched with the ground base station to collect aerial survey data, the measurement precision is retested through the total station, the millimeter level is achieved, and the accuracy of data sources is effectively guaranteed.
(2) In the method, building of the BIM model is carried out according to construction detailed drawings, and the size of a structure is 1:1 full-size reduction, and importing a construction total floor plan in a BIM environment, so that the relative position of the building can be accurately positioned.
(3) The method utilizes BIM+GIS technology to construct an indoor and outdoor integrated model of the building, creates platform access ports of all participants of the project, and realizes digital information sharing inside and outside the building by the constructors, design parties and other participants, thereby realizing no attenuation of information of all participants.
(4) The method fuses BIM and GIS technologies, combines the advantages of the BIM and the GIS technologies, and builds an indoor and outdoor integrated model of the building, so that the comprehensive and whole-process visual supervision and management of the building can be realized, resources are reasonably utilized to the greatest extent, the management level is improved, the working efficiency is improved, and the high-quality and safe use of equipment is realized at low cost.
(5) The method integrates BIM and GIS technologies, can assist in arranging construction data, divide data information sources, assist in the internal data management work of the whole construction process, and can pay attention to external information such as related policy and market environment change at the same time to timely make response and adjustment, so that the management work of information data of internal data and external large environments of a building is greatly facilitated to be known.
(6) The virtual construction sand table has strong applicability and popularization, is easy to operate and easy to operate, can be tightly combined with BIM technology, and can be established in various fields such as house construction, highways and the like to intuitively reflect the layout of the construction site.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a virtual construction sand table construction device based on the three-dimensional GIS and BIM integration, which is used for realizing the virtual construction sand table construction method based on the three-dimensional GIS and BIM integration. The implementation scheme of the device for solving the problem is similar to the implementation scheme recorded in the method, so the specific limitation in the embodiment of the device for constructing the virtual construction sand table based on the integration of the three-dimensional GIS and the BIM provided below can be referred to the limitation of the method for constructing the virtual construction sand table based on the integration of the three-dimensional GIS and the BIM, and the description is omitted here.
In one embodiment, as shown in fig. 6, there is provided a virtual construction sand table construction device based on integration of three-dimensional GIS and BIM, including:
the information acquisition module 601 is configured to acquire aerial photo information and image control point information of a target area; the target area is an area where a pre-identified target construction project is located.
And the space three calculation module 602 is configured to perform space three calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area.
The model correction module 603 is configured to introduce the image control point information into the three-dimensional model, and correct the three-dimensional model after the image control point information is introduced.
The secondary calculation module 604 is configured to perform secondary air-space three calculation on the corrected three-dimensional model, and construct a corresponding GIS space model according to the secondary air-space three calculation result.
The model obtaining module 605 is configured to obtain a target BIM model constructed according to the construction drawing information of the target construction project.
And the model fusion module 606 is used for carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
In one embodiment, the air three calculation module 602 is further configured to construct an initial three-dimensional model including aerial photo information according to the preset template model and the aerial photo information; performing space three calculation on the initial three-dimensional model to obtain space position information contained in a target area; and obtaining a three-dimensional model corresponding to the target area according to the initial three-dimensional model and the space position information.
In one embodiment, the model modification module 603 is further configured to determine target picture information associated with the three-dimensional model according to the image control point information; and correcting the puncture point in the target picture information according to the image control point information.
In one embodiment, the secondary calculation module 604 is further configured to perform a secondary space-time three-calculation on the corrected three-dimensional model to obtain updated spatial position information; generating a point cloud file in a preset file format according to the updated spatial position information, and taking the point cloud file as a secondary space three calculation result; and obtaining the GIS space model according to the corrected three-dimensional model and the secondary space three-dimensional calculation result.
In one embodiment, the model obtaining module 605 is further configured to obtain building information included in the target construction project and building architecture information corresponding to each building according to the construction drawing information; constructing a plurality of BIM models corresponding to each building according to the building information and the building architecture information; model merging is carried out on the BIM models to obtain a merged model; and identifying the relative position information of each BIM model in the combined model to obtain a combined model containing the relative position information as a target BIM model.
In one embodiment, the model fusion module 606 is further configured to perform coordinate system conversion processing on the GIS spatial model and the target BIM model, so as to obtain a GIS spatial model and a target BIM model with a coordinate system; determining coordinate information of a target point location in a GIS space model and a target BIM model with a unified coordinate system respectively; and carrying out point-to-point model fusion processing on the GIS space model and the target BIM model of the coordinate system according to the coordinate information of the target point location, thereby obtaining the virtual construction sand table.
All or part of the modules in the virtual construction sand table construction device based on the integration of the three-dimensional GIS and the BIM can be realized by software, hardware and a combination of the software and the hardware. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to realize a virtual construction sand table construction method based on integration of three-dimensional GIS and BIM. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in FIG. 7 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In an embodiment, there is also provided a computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (10)
1. The virtual construction sand table construction method based on three-dimensional GIS and BIM integration is characterized by comprising the following steps:
acquiring aerial photo information and image control point information of a target area; the target area is an area where a target construction project identified in advance is located;
performing space three calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area;
Importing the image control point information into the three-dimensional model, and correcting the three-dimensional model after importing the image control point information;
performing secondary space three-dimensional calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary space three-dimensional calculation result;
acquiring a target BIM model constructed according to construction drawing information of the target construction project;
and carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
2. The method of claim 1, wherein the performing the space three calculation according to the aerial photo information to obtain the three-dimensional model corresponding to the target area comprises:
constructing an initial three-dimensional model containing the aerial photo information according to a preset template model and the aerial photo information;
performing space three calculation on the initial three-dimensional model to obtain space position information contained in the target area;
and obtaining a three-dimensional model corresponding to the target area according to the initial three-dimensional model and the spatial position information.
3. The method according to claim 1, wherein the correcting the three-dimensional model after the image control point information is introduced includes:
Determining associated target picture information in the three-dimensional model according to the image control point information;
and correcting the puncture point in the target picture information according to the image control point information.
4. The method according to claim 1, wherein the performing the second space third calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to the result of the second space third calculation, includes:
performing secondary space three-dimensional calculation on the corrected three-dimensional model to obtain updated spatial position information;
generating a point cloud file in a preset file format according to the updated spatial position information, and taking the point cloud file as a secondary space three calculation result;
and obtaining the GIS space model according to the corrected three-dimensional model and the secondary space three-dimensional calculation result.
5. The method according to any one of claims 1, wherein the obtaining the target BIM model constructed according to the construction drawing information of the target construction project includes:
building information contained in the target construction project and building architecture information corresponding to each building are obtained according to the construction drawing information;
constructing a plurality of BIM models corresponding to the buildings according to the building information and the building architecture information;
Model merging is carried out on the BIM models to obtain a merged model;
and identifying the relative position information of each BIM model in the merging model to obtain a merging model containing the relative position information as the target BIM model.
6. The method according to any one of claims 1 to 5, wherein the fusing the GIS spatial model and the target BIM model to obtain the virtual construction sand table of the target construction project includes:
performing coordinate system conversion processing on the GIS space model and the target BIM model to obtain a GIS space model and a target BIM model with a unified coordinate system;
determining coordinate information of a target point location in a GIS space model and a target BIM model which are unified in the coordinate system respectively;
and carrying out point-to-point model fusion processing on the GIS space model and the target BIM model which are unified in the coordinate system according to the coordinate information of the target point location, and obtaining the virtual construction sand table.
7. Virtual construction sand table construction device based on three-dimensional GIS and BIM integration, characterized in that, the device includes:
the information acquisition module is used for acquiring aerial photo information and image control point information of the target area; the target area is an area where a target construction project identified in advance is located;
The aerial three-calculation module is used for carrying out aerial three-calculation according to the aerial photo information to obtain a three-dimensional model corresponding to the target area;
the model correction module is used for importing the image control point information into the three-dimensional model and correcting the three-dimensional model after the image control point information is imported;
the secondary calculation module is used for carrying out secondary air-space three calculation on the corrected three-dimensional model, and constructing a corresponding GIS space model according to a secondary air-space three calculation result;
the model acquisition module is used for acquiring a target BIM model constructed according to construction drawing information of the target construction project;
and the model fusion module is used for carrying out fusion processing on the GIS space model and the target BIM model to obtain the virtual construction sand table of the target construction project.
8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
10. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
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