CN114758077A - Large-scale city true three-dimensional model system based on aerial photography and point cloud data - Google Patents
Large-scale city true three-dimensional model system based on aerial photography and point cloud data Download PDFInfo
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Abstract
The invention discloses a large-scale city true three-dimensional model system based on aerial photography and point cloud data, which belongs to the technical field of large-scale city true three-dimensional model systems and comprises a multi-source data acquisition module, wherein an output port of the multi-source data acquisition module is connected with a multi-source data processing module, an output port of the multi-source data processing module is connected with a large-scale city true three-dimensional model building module, an output port of the large-scale city true three-dimensional model building module is connected with a large-scale city true three-dimensional roaming model building module, and an output port of the large-scale city true three-dimensional roaming model building module is connected with a roaming model display application platform; the method breaks through the limitation of single-source data, improves the quality precision of the constructed large-scale city true three-dimensional model, has the function of autonomous roaming at different visual angles, and can provide visual basis for multiple contents such as space planning by a city planning department and bottom business over-management by a business department.
Description
Technical Field
The invention belongs to the technical field of large-scale real three-dimensional city model systems, and particularly relates to a large-scale real three-dimensional city model system based on aerial photography and point cloud data.
Background
With the progress of the modern construction process of cities, the planning of each detail of the cities becomes important, and the large-scale real three-dimensional model construction of the cities is particularly important for effectively managing huge urban space and understanding and processing the dynamic change characteristics of the cities.
Along with the increase of urban high-rise buildings and the increase of urban building density, the difficulty of acquiring complete image data of the buildings by adopting an aerial photogrammetry technology is higher and higher, and the quality and the updating speed of the large-scale urban true three-dimensional model construction are also seriously influenced by frequent replacement of shops at the bottom of the urban buildings and shielding of objects such as green trees and the like.
Therefore, a large-scale city true three-dimensional model system based on aerial photography and point cloud data needs to be designed, data fusion application of a multi-dimensional stereo space is realized, the problem of construction quality of the large-scale city true three-dimensional model is solved, and diversification and innovative application of the large-scale city true three-dimensional model are realized.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a large-scale city true three-dimensional model system based on aerial photography and point cloud data, which has the characteristics of realizing data fusion application of a multi-dimensional stereo space, overcoming the problem of construction quality of a large-scale city true three-dimensional model and realizing diversification and innovative application of the large-scale city true three-dimensional model.
In order to achieve the purpose, the invention provides the following technical scheme: a large-scale city true three-dimensional model system based on aerial photography and point cloud data comprises a multi-source data acquisition module, wherein an output port of the multi-source data acquisition module is connected with a multi-source data processing module, an output port of the multi-source data processing module is connected with a large-scale city true three-dimensional model building module, an output port of the large-scale city true three-dimensional model building module is connected with a large-scale city true three-dimensional roaming model building module, and an output port of the large-scale city true three-dimensional roaming model building module is connected with a roaming model display application platform;
the multi-source data acquisition module comprises an aerial photography data acquisition module, a low-altitude aerial photography data acquisition module and a city street view data acquisition module, and output ports of the aerial photography data acquisition module, the low-altitude aerial photography data acquisition module and the city street view data acquisition module are connected with the multi-source data processing module;
the multi-source data processing module comprises a multi-source heterogeneous point cloud data fusion module, an input port of the multi-source heterogeneous point cloud data fusion module is respectively connected with the aerial photography data acquisition module, the low-altitude aerial photography data acquisition module and the city street view data acquisition module, and an output port of the multi-source heterogeneous point cloud data fusion module is connected with the large-scale city true three-dimensional model building module;
the roaming model display application platform comprises a platform processing module and a roaming model display module, wherein an input port of the platform processing module is connected with the large-scale city true three-dimensional roaming model building module, and an output port of the platform processing module is connected with the roaming model display module.
Further, the aerial photography data acquisition module and the low-altitude aerial photography data acquisition module both comprise a multi-rotor unmanned aerial vehicle and a camera, and the camera is carried on the multi-rotor unmanned aerial vehicle.
Further, the city street view data acquisition module comprises a data acquisition vehicle and a panoramic camera, and the panoramic camera is carried on the data acquisition vehicle.
Furthermore, the input port of the roaming model display module is connected with an association module, the input port of the association module is connected with a roaming model position positioning module, the input port and the output port of the association module are connected with a database, and the input port of the database is connected with a large-scale city true three-dimensional model building module.
Furthermore, the input port of the platform processing module is connected with an internet data real-time acquisition module, the output port of the platform processing module is connected with a position updating reminding module and a local roaming model replacing module, and the output ports of the position updating reminding module and the local roaming model replacing module are respectively connected with a roaming model display module.
Further, the internet data acquisition website of the internet data real-time acquisition module comprises a town planning bureau and a city planning bureau.
Further, the input port of the platform processing module is connected with an object editing module, and the output port of the platform processing module is connected with the large-scale city true three-dimensional model building module.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, on the basis of aerial photogrammetry, low-altitude aerial photogrammetry and collection work of city street views are carried out, multi-source data fusion is carried out through a multi-source heterogeneous point cloud data fusion technology, model construction is carried out through a large-scale city true three-dimensional model construction module, the limitation of single-source data is broken through, the quality precision of the constructed large-scale city true three-dimensional model is improved, meanwhile, a roaming model is constructed through the large-scale city true three-dimensional roaming model construction module, and the roaming model is displayed through a platform processing module and a roaming model display module, so that the system has the function of autonomous roaming at different visual angles, and visual basis can be provided for space planning of a city planning department and multiple contents of bottom layer business over management of a business department.
2. When various management departments in a city need to perform related operation by means of a roaming model, the number of the building structure of the position of the roaming model to be checked is input through the roaming model position positioning module, the roaming model display module is controlled to jump to the numbered building structure position through the association module, and simultaneously, the geographic parameter information of the numbered building structure is displayed at the corresponding position of the roaming model through the association module, so that the situation that management personnel spend a long time to search the position of the roaming model to be checked on the roaming model by themselves can be avoided, the speed of the various management departments in the city for performing related operation is accelerated, and the diversification, innovation and application of the model are realized.
3. The invention collects planning data of each planning bureau in real time through an internet data real-time collection module, analyzes the planning data through a platform processing module, reminds the planning bureau through a position updating reminding module, displays reminding information through a roaming model display module, collects data of the changing position through an aerial photography data collection module, a low-altitude aerial photography data collection module and a city street view data collection module, fuses the data through a multi-source heterogeneous point cloud data fusion module, builds a local model through a large-scale city real three-dimensional model building module, builds local roaming data through the large-scale city real three-dimensional roaming model building module, feeds back the data through the platform processing module, replaces the roaming model through a local roaming model replacement module, displays the re-combined roaming model through the roaming model display module, and can realize the semi-automatic update of a system model, meanwhile, the original model does not need to be completely reconstructed, and the updating efficiency and quality precision of the model can be improved.
4. According to the invention, parameter editing is carried out on related objects of the model through the object editing module, parameters are fed back through the platform processing module, local model construction is carried out through the large-scale city true three-dimensional model construction module, local roaming data construction is carried out through the large-scale city true three-dimensional roaming model construction module, the local roaming model replacement module is used for replacing, and the roaming model display module is used for displaying the newly combined roaming model, so that various management departments in a city can be helped to have a certain evaluation effect on the planning effect, and the diversification and innovative application value of the system model can be further improved.
Drawings
FIG. 1 is a system block diagram of a large-scale city true three-dimensional model system based on aerial photography and point cloud data according to the present invention;
FIG. 2 is a block diagram of the refining system of FIG. 1 in accordance with the present invention;
in the figure: 1. a multi-source data acquisition module; 101. an aerial photography data acquisition module; 102. a low-altitude aerial photography data acquisition module; 103. a city street view data acquisition module;
2. a multi-source data processing module; 201. a multi-source heterogeneous point cloud data fusion module;
3. a large-scale city true three-dimensional model building module;
4. a large-scale city true three-dimensional roaming model construction module;
5. the roaming model shows an application platform; 501. an object editing module; 502. a local roaming model replacement module; 503. a location update reminding module; 504. a roaming model display module; 505. a platform processing module; 506. an internet data real-time acquisition module; 507. a correlation module; 508. a roaming model position location module; 509. a database.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the present invention provides the following technical solutions: a large-scale city true three-dimensional model system based on aerial photography and point cloud data comprises a multi-source data acquisition module 1, wherein an output port of the multi-source data acquisition module 1 is connected with a multi-source data processing module 2, an output port of the multi-source data processing module 2 is connected with a large-scale city true three-dimensional model building module 3, an output port of the large-scale city true three-dimensional model building module 3 is connected with a large-scale city true three-dimensional roaming model building module 4, and an output port of the large-scale city true three-dimensional roaming model building module 4 is connected with a roaming model display application platform 5;
the multi-source data acquisition module 1 comprises an aerial photography data acquisition module 101, a low-altitude aerial photography data acquisition module 102 and a city street view data acquisition module 103, and the output ports of the aerial photography data acquisition module 101, the low-altitude aerial photography data acquisition module 102 and the city street view data acquisition module 103 are connected with the multi-source data processing module 2;
the multi-source data processing module 2 comprises a multi-source heterogeneous point cloud data fusion module 201, an input port of the multi-source heterogeneous point cloud data fusion module 201 is respectively connected with the aerial photography data acquisition module 101, the low-altitude aerial photography data acquisition module 102 and the city street view data acquisition module 103, and an output port of the multi-source heterogeneous point cloud data fusion module 201 is connected with the large-scale city true three-dimensional model building module 3;
the roaming model display application platform 5 comprises a platform processing module 505 and a roaming model display module 504, wherein an input port of the platform processing module 505 is connected with the large-scale city true three-dimensional roaming model building module 4, and an output port of the platform processing module 505 is connected with the roaming model display module 504.
Specifically, aerial photography data acquisition module 101 and low latitude aerial photography data acquisition module 102 all include many rotor unmanned aerial vehicle and camera, and the camera carries on many rotor unmanned aerial vehicle.
Specifically, the city street view data acquisition module 103 includes a data acquisition vehicle and a panoramic camera, and the panoramic camera is mounted on the data acquisition vehicle.
The specific data acquisition method of the aerial photography data acquisition module 101 is as follows:
planning an optimal flight route of the multi-rotor unmanned aerial vehicle according to the area of the aerial photography, flying the multi-rotor unmanned aerial vehicle according to the planned optimal flight route, acquiring urban data by a camera in the flying process of the multi-rotor unmanned aerial vehicle, and feeding the acquired urban low-altitude data back to a multi-source heterogeneous point cloud data fusion module 201 by the camera;
the specific data acquisition method of the low-altitude aerial photography data acquisition module 102 comprises the following steps:
planning an optimal flight route of the multi-rotor unmanned aerial vehicle according to the area of the low-altitude aerial photography, flying the multi-rotor unmanned aerial vehicle according to the planned optimal flight route, acquiring urban data by a camera in the flying process of the multi-rotor unmanned aerial vehicle, and feeding the acquired urban low-altitude data back to a multi-source heterogeneous point cloud data fusion module 201 by the camera;
the specific data acquisition method of the city street view data acquisition module 103 comprises the following steps:
planning an optimal driving route of a data acquisition vehicle according to the area of the city street view data acquisition, driving the data acquisition vehicle according to the planned optimal driving route, acquiring the city street view data by a panoramic camera in the driving process of the data acquisition vehicle, and feeding the acquired city street view data back to the multi-source heterogeneous point cloud data fusion module 201 by the panoramic camera;
the specific data fusion method of the multi-source heterogeneous point cloud data fusion module 201 comprises the following steps:
in the overall control point cloud data collected by the aerial photography data collection module 101 and the low-altitude aerial photography data collection module 102, three-dimensional coordinates which are uniformly distributed and are not lower than 8 feature point locations are selected for each layer to serve as image control points to participate in adjustment calculation of image data, processed point cloud data are generated, high-precision registration of the overall control scanning point cloud data collected by the city street view data collection module 103 is completed by adopting a multi-view global optimization registration algorithm, the processed point cloud data are generated, three types of processed point cloud data with a uniform coordinate system are led into TrimbleRealWorks software, the TrimbleRealWorks software completes fusion of multi-source heterogeneous point cloud data, point cloud data of an overlapped structure are deleted in a man-machine interactive mode, and simplification is completed;
the specific construction method of the large-scale city true three-dimensional model construction module 3 comprises the following steps:
enhancing the matching effect through image matching pretreatment, performing three-dimensional reconstruction by adopting a Poisson network construction method and a weight selection iteration method based on point cloud integral consideration, and completing the construction of a three-dimensional accurate large-scale city true three-dimensional model by utilizing a multi-angle image texture automatic mapping technology;
the specific construction method of the large-scale city true three-dimensional roaming model construction module 4 comprises the following steps:
the constructed large-scale city true three-dimensional model is led into interactive software, and the interactive software realizes autonomous roaming on the constructed large-scale city true three-dimensional model to complete construction of a three-dimensional accurate large-scale city true three-dimensional roaming model;
subsequently, the large-scale city true three-dimensional roaming model building module 4 feeds back the built large-scale city true three-dimensional roaming model to the roaming model display module 504 through the platform processing module 505 to perform autonomous roaming at different viewing angles, so as to provide an intuitive basis for a city planning department to perform space planning and a business department to perform underlying business over-management and other multiple contents.
Example 2
The present embodiment is different from embodiment 1 in that:
specifically, an input port of the roaming model display module 504 is connected with an association module 507, an input port of the association module 507 is connected with a roaming model position positioning module 508, an input port and an output port of the association module 507 are connected with a database 509, and an input port of the database 509 is connected with the large-scale city true three-dimensional model building module 3.
When the model is constructed, the construction personnel numbers each building structure on the model, associates the geographic parameter information of each building structure with the number, and stores the number and each associated geographic parameter information into the database 509;
when the model is called by any management department in a city, the management department inputs the building structure number of the roaming model position to be checked through the roaming model position positioning module 508, the input is completed, the correlation module 507 compares the input building structure number with the numbers stored in the database 509, the same number is found out, the roaming model display module 504 is controlled to jump to the building structure position with the number, meanwhile, the correlation module 507 displays the geographic parameter information of the building structure with the number at the corresponding position of the roaming model, and therefore the situation that a manager needs to spend a long time to find the roaming model position to be checked on the roaming model by himself can be avoided.
Example 3
The present embodiment is different from embodiments 1 and 2 in that:
specifically, an input port of the platform processing module 505 is connected to the internet data real-time acquisition module 506, an output port of the platform processing module 505 is connected to the location update reminding module 503 and the local roaming model replacing module 502, and output ports of the location update reminding module 503 and the local roaming model replacing module 502 are respectively connected to the roaming model display module 504.
Specifically, the internet data collection website of the internet data real-time collection module 506 includes a town planning bureau and a city planning bureau.
In the using process of the system, the internet data real-time acquisition module 506 acquires planning data of each planning bureau in real time and feeds the planning data back to the platform processing module 505, the platform processing module 505 analyzes the received planning data, if the planning data changes, the platform processing module 505 sends an instruction to the position updating reminding module 503, and the position updating reminding module 503 sends the reminding data to the roaming model display module 504 for displaying, so that the purpose of reminding system personnel is achieved;
the system personnel receives the alert, plans the aerial photography data acquisition module 101 according to the changed position, the low-altitude aerial photography data acquisition module 102 and the city street view data acquisition module 103 acquire data, the acquired data are subjected to data fusion through the multi-source heterogeneous point cloud data fusion module 201, the fused data are subjected to local model construction through the large-scale city true three-dimensional model construction module 3, the locally constructed data are subjected to local roaming data construction through the large-scale city true three-dimensional roaming model construction module 4, the constructed local roaming data are fed back to the platform processing module 505, the platform processing module 505 feeds back the received data to the local roaming model replacement module 502, the local roaming model replacement module 502 replaces an original local model in the roaming model display module 504 with a new local model, and the roaming model display module 504 displays the re-combined roaming model.
Example 4
This example differs from examples 1, 2 and 3 in that:
specifically, an input port of the platform processing module 505 is connected to the object editing module 501, and an output port of the platform processing module 505 is connected to the large-scale city true three-dimensional model building module 3.
When various management departments in a city want to perform simulation planning through a model, a city manager edits parameters of related objects of the model through the object editing module 501, the editing is completed, the object editing module 501 feeds the edited parameter information back to the platform processing module 505, the platform processing module 505 feeds the received parameter information back to the large-scale city true three-dimensional model building module 3, the large-scale city true three-dimensional model building module 3 performs local model building according to the edited parameters, the locally built data performs local roaming data building through the large-scale city true three-dimensional roaming model building module 4, the built local roaming data is fed back to the platform processing module 505, the platform processing module 505 feeds the received data back to the local roaming model replacing module 502, the local roaming model replacing module 502 replaces an original local model in the roaming model displaying module 504 with a new local model, the roaming model display module 504 displays the recombined roaming model to help each management department in the city to have a certain evaluation effect on the planning effect, and further improves the application value of the system;
the simulation is completed and the previously edited parameters are deleted by the object editing module 501 so that the roaming model is restored to the initial state.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a real three-dimensional model system in extensive city based on aerial photograph and point cloud data, includes multisource data acquisition module (1), its characterized in that: an output port of the multi-source data acquisition module (1) is connected with a multi-source data processing module (2), an output port of the multi-source data processing module (2) is connected with a large-scale city true three-dimensional model building module (3), an output port of the large-scale city true three-dimensional model building module (3) is connected with a large-scale city true three-dimensional roaming model building module (4), and an output port of the large-scale city true three-dimensional roaming model building module (4) is connected with a roaming model display application platform (5);
the multi-source data acquisition module (1) comprises an aerial photography data acquisition module (101), a low-altitude aerial photography data acquisition module (102) and a city street view data acquisition module (103), and output ports of the aerial photography data acquisition module (101), the low-altitude aerial photography data acquisition module (102) and the city street view data acquisition module (103) are connected with the multi-source data processing module (2);
the multi-source data processing module (2) comprises a multi-source heterogeneous point cloud data fusion module (201), an input port of the multi-source heterogeneous point cloud data fusion module (201) is respectively connected with an aerial photography data acquisition module (101), a low-altitude aerial photography data acquisition module (102) and a city street view data acquisition module (103), and an output port of the multi-source heterogeneous point cloud data fusion module (201) is connected with a large-scale city true three-dimensional model building module (3);
the roaming model display application platform (5) comprises a platform processing module (505) and a roaming model display module (504), wherein an input port of the platform processing module (505) is connected with the large-scale city true three-dimensional roaming model building module (4), and an output port of the platform processing module (505) is connected with the roaming model display module (504).
2. The system of claim 1, wherein the system comprises a large-scale city true three-dimensional model system based on aerial photography and point cloud data, and is characterized in that: aerial photography data acquisition module (101) and low latitude aerial photography data acquisition module (102) all include many rotor unmanned aerial vehicle and camera, the camera carries on many rotor unmanned aerial vehicle.
3. The system of claim 1, wherein the system comprises a large-scale city true three-dimensional model system based on aerial photography and point cloud data, and is characterized in that: the city street view data acquisition module (103) comprises a data acquisition vehicle and a panoramic camera, and the panoramic camera is carried on the data acquisition vehicle.
4. The system of claim 1, wherein the system comprises a large-scale city true three-dimensional model system based on aerial photography and point cloud data, and is characterized in that: the input port of the roaming model display module (504) is connected with a correlation module (507), the input port of the correlation module (507) is connected with a roaming model position positioning module (508), the input port and the output port of the correlation module (507) are connected with a database (509), and the input port of the database (509) is connected with a large-scale city true three-dimensional model building module (3).
5. The aerial photography and point cloud data-based large-scale city true three-dimensional model system of claim 1, wherein: an input port of the platform processing module (505) is connected with an internet data real-time acquisition module (506), an output port of the platform processing module (505) is respectively connected with a position updating reminding module (503) and a local roaming model replacing module (502), and output ports of the position updating reminding module (503) and the local roaming model replacing module (502) are respectively connected with a roaming model display module (504).
6. The system of claim 5, wherein the system comprises a large-scale city true three-dimensional model system based on aerial photography and point cloud data, and comprises: the internet data acquisition website of the internet data real-time acquisition module (506) comprises a town planning bureau and a city planning bureau.
7. The system of claim 1, wherein the system comprises a large-scale city true three-dimensional model system based on aerial photography and point cloud data, and is characterized in that: the input port of the platform processing module (505) is connected with an object editing module (501), and the output port of the platform processing module (505) is connected with the large-scale city true three-dimensional model building module (3).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104021586A (en) * | 2014-05-05 | 2014-09-03 | 深圳市城市管理监督指挥中心 | Air-ground integrated city ecological civilization managing system and method based on Beidou positioning |
| CN114241143A (en) * | 2021-11-25 | 2022-03-25 | 苏州规划设计研究院股份有限公司 | Smart city planning platform and method based on multi-dimensional data and three-dimensional modeling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021586A (en) * | 2014-05-05 | 2014-09-03 | 深圳市城市管理监督指挥中心 | Air-ground integrated city ecological civilization managing system and method based on Beidou positioning |
| CN114241143A (en) * | 2021-11-25 | 2022-03-25 | 苏州规划设计研究院股份有限公司 | Smart city planning platform and method based on multi-dimensional data and three-dimensional modeling |
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