CN108053474A - A kind of new city three-dimensional modeling control system and method - Google Patents
A kind of new city three-dimensional modeling control system and method Download PDFInfo
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- CN108053474A CN108053474A CN201711488309.XA CN201711488309A CN108053474A CN 108053474 A CN108053474 A CN 108053474A CN 201711488309 A CN201711488309 A CN 201711488309A CN 108053474 A CN108053474 A CN 108053474A
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- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G06T17/20—Finite element generation, e.g. wire-frame surface description, tesselation
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Abstract
The invention belongs to dimensional Modeling Technology fields, disclose a kind of new city three-dimensional modeling control system and method, are provided with：Image input units, camera calibrated unit, translation and spin data input unit, digital elevation model input unit, relief model generation unit, texture blending unit, buildings model generation unit, buildings model storage unit, Model Matching unit, display unit.By the present invention in that with digital elevation model (DEM) and the image obtained from aircraft and ground, the three-dimensional appearance and dimensional topography of urban architecture are modeled, and texture true to nature is extracted from image；The aerial image shot in vertical direction and inclined direction in addition to DEM can be used to generate three-dimensional building model, and extract the texture of related threedimensional model, it can the threedimensional model of finer simulation ground acquisition image generation or the texture of extraction higher resolution.
Description
Technical field
The invention belongs to dimensional Modeling Technology field more particularly to a kind of new city three-dimensional modeling control system and sides
Method.
Background technology
It is widely available using Map Services and the VHSI very high speed internet transmission of high-resolution satellite image.In addition, make
It is attract attention by the use of the road landscape of ground capture images or Streetscape type service as a kind of new services.Use satellite
The Map Services of image can it is expected to check in user indicates building or road name on the satellite image in region, therefore sometimes
Searching route after source and destination can be carried out providing by waiting.In addition, Map Services cause the user on ground in relevant range
The image of shooting can upload onto the server, and the meteorology and satellite mapping in the region can also be checked even if using ground image
Picture.At the same time, such Map Services also cause the threedimensional model made in person by user to be shared, so as in three-dimensional
Relevant range is observed in scene.However, using satellite image Map Services the shortcomings that be, can in some regions satellite image
There can be low resolution, so as to be difficult to identify some region exactly and provide slightly dull image.In contrast, open recently
The road landscape or street view service of beginning is provided obtains image by using the comprehensive camera being mostly installed on vehicle
It services (equipment that such as can once capture 360 degree of visuals field), and acquired image is shown in the form of the continuous panorama of image.
Therefore, user can obtain the information in relation to region in some environment, and in this context, his (she) seems in actual street
Observe peripheral region in position.In addition, such road landscape or street view service make it is associated with satellite image service become can
Can, because camera and global positioning system (GPS) are operation associated so that know the position of capture when obtaining image.These are passed
System technology is intended to provide two dimensional surface information.Meanwhile it widely carries out building using satellite image or aerial image generation
Build the research of object threedimensional model.However, since building occupies the part of very little in most of images, so the standard of building
True property is deteriorated.Additionally, there are the problem of be, the texture of side of buildings does not indicate in most cases, and on the whole
Quality is poor.
In conclusion problem existing in the prior art is：Since building occupies the part of very little in most of images,
Building accuracy is deteriorated；The texture of side of buildings does not indicate in most cases, and quality is poor on the whole.
The content of the invention
In view of the problems of the existing technology, the present invention provides a kind of new city three-dimensional modeling control system and sides
Method.
The present invention is achieved in that a kind of new city three-dimensional modeling control system, the new city three-dimensional modeling
Control system includes：
Image input units are connected with camera calibrated unit and texture blending unit, for receiving storage in a computer
Modeling region is aerial and ground image；
Camera calibrated unit, with translation and spin data input unit, buildings model generation unit, buildings model storage list
Member connection, extracts characteristic point, and distinguished point based establishes the correspondence between image, is calculated according to correspondence in the picture
The translation and rotation of camera；The camera translation inputted according to translation and spin data input unit and spin data, calibrate image
The aerial and ground image of input unit input；
Translation and spin data input unit, for reception, by filming apparatus, the attitude transducer when obtaining aerial image is remembered
The translation of record and spin data；
Digital elevation model input unit is connected with relief model generation unit, high for receiving the number in modeling region
Journey model；
Relief model generation unit for digital elevation model to be converted to three-dimensional grid, generates three-dimensional terrain model；
Texture blending unit is connected with relief model generation unit, buildings model generation unit, for three-dimensional building model
Texture blending：According to the correspondence between each face of three-dimensional building model and image, extracted using correspondence relationship information three-dimensional
Build the texture in each face；Three-dimensional terrain model texture blending：According to the coincidence point of dimensional topography grid and vertical air image,
Foundation corresponds relation extraction texture；
Buildings model generation unit for passing through the corresponding points between image, determines a large amount of three-dimensionals on skin
Coordinate builds three-dimensional grid by three-dimensional coordinate；
Buildings model storage unit, for storing the three-dimensional building model generated by buildings model generation unit；
Model Matching unit, it is single with relief model generation unit, texture blending unit, buildings model generation unit, display
Member connection, for by making the vertex on three-dimensional building model meshes bottom surface and corresponding landform Texture Matching, realizing and building three-dimensional
The projected coordinate system that model coordinate systems are converted into digital elevation model is built, generates three-dimensional terrain model and three-dimensional building model phase
The D Urban model matched somebody with somebody；
Display unit, for showing the D Urban model generated by modeling unit on the computer screen.
Further, the image in each face of three-dimensional building model is blocked in the texture blending unit, using closing on image
Carry out texture repairing；Three-dimensional terrain model texture blending：According to the coincidence point of dimensional topography grid and vertical air image, establish
Correspond relation extraction texture.
Further, the buildings model generation unit by three-dimensional grid plane, cuboid replaced with fundamental figure, it is raw
Into rough three-dimensional building model；Three-dimensional building model carries out three-dimensional building modeling by aerial image.
Another object of the present invention is to provide a kind of new city three of the new city three-dimensional modeling control system
Modeling method is tieed up, the new city three-dimensional modeling control method comprises the following steps：
Step 1 receives the digital elevation model (DEM) in modeling region, and digital elevation model is one group of orderly array of values
It represents the actual ground model of ground elevation, realizes the digitized simulation to modeling localized ground landform, digital elevation model can
It is obtained by modes such as measurement, aerospace photogrammetry, topographic map acquisitions；
Step 2 extracts elevational point in digital elevation model, forms the landform being made of elevational point and expresses, by elevational point
It is connected with two neighboring elevational point, forms triangular irregular net, i.e. three-dimensional grid.By three-dimensional grid carry out it is dizzy color in, it is raw
Into three-dimensional terrain model.By the same place between multiple camera images, (the identical point of i.e. adjacent image overlap area also known as corresponds to
Point), the parameters such as inclination angle, the rotation drift angle of camera are calculated, camera is corrected using calculating parameter, makes camera when shooting photo
For theory state.Using camera calibration as a result, carrying out processing generation three-dimensional building model to image；
Step 3, from the related three-dimensional building model of the aerial and ground image extraction of input and the texture of ground model；
Step 4, from the related three-dimensional building model of the aerial and ground image extraction of input and the texture of ground model；
Step 5 shows the city threedimensional model of generation.
Another object of the present invention is to provide a kind of calculating for being equipped with the new city three-dimensional modeling control system
Machine.
Another object of the present invention is to provide a kind of satellite for being equipped with the new city three-dimensional modeling control system.
Advantages of the present invention and good effect are：It is obtained by using digital elevation model (DEM) and from aircraft and ground
The image taken is modeled the three-dimensional appearance and dimensional topography of urban architecture, and texture true to nature is extracted from image；It can
The aerial image shot in vertical direction and inclined direction in addition to DEM to be used to generate three-dimensional building model, and carry
Take the texture of related threedimensional model, can finer simulation ground obtain image generation threedimensional model or extraction more
High-resolution texture；Outdoor scene threedimensional model is consistent completely with real space environment；Three-dimensional modeling work efficiency improves 5 times；Mould
Type horizontal level precision and vertical precision meet large scale topographical map required precision；Model fixture resolution 5cm.
Description of the drawings
Fig. 1 is new city three-dimensional modeling control system architecture schematic diagram provided in an embodiment of the present invention；
In figure：1st, image input units；2nd, camera calibrated unit；3rd, translation and spin data input unit；4th, number is high
Journey mode input unit；5th, relief model generation unit；6th, texture blending unit；7th, buildings model generation unit；8th, mould is built
Type storage unit；9th, Model Matching unit；10th, display unit.
Fig. 2 is new city three-dimensional modeling method flow chart provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, new city three-dimensional modeling control system provided in an embodiment of the present invention includes：Image input units
1st, camera calibrated unit 2, translation and spin data input unit 3, digital elevation model input unit 4, relief model generation are single
Member 5, texture blending unit 6, buildings model generation unit 7, buildings model storage unit 8, Model Matching unit 9, display unit
10。
Image input units 1 are connected with camera calibrated unit 2 and texture blending unit 6, and computer is stored in for receiving
In modeling region is aerial and ground image.
Camera calibrated unit 2 is deposited with translation and spin data input unit 3, buildings model generation unit 7, buildings model
Storage unit 8 connects, and extracts characteristic point in the picture, and distinguished point based establishes the correspondence between image, is closed according to corresponding
System calculates the translation and rotation of camera；The camera translation inputted according to translation and spin data input unit and spin data, school
The aerial and ground image of quasi- image input units input.
Translation and spin data input unit 3, for receive by filming apparatus when obtaining aerial image attitude transducer
The translation of record and spin data.
Digital elevation model input unit 4 is connected with relief model generation unit 5, for receiving the number in modeling region
Elevation model.
Relief model generation unit 5, for digital elevation model to be converted to three-dimensional grid, so as to generate dimensional topography mould
Type.
Texture blending unit 6 is connected with relief model generation unit 5, buildings model generation unit 7, for three-dimensional building
Model texture blending：According to the correspondence between each face of three-dimensional building model and image, extracted using correspondence relationship information
The texture in each face of three-dimensional building.Image such as each face of three-dimensional building model is blocked, this use closes on image and carries out texture
It repairs；Three-dimensional terrain model texture blending：According to the coincidence point of dimensional topography grid and vertical air image, foundation corresponds
Relation extracts texture.
Buildings model generation unit 7 for passing through the corresponding points between image, determines a large amount of three-dimensionals on skin
Coordinate builds three-dimensional grid by three-dimensional coordinate；Plane, cuboid in three-dimensional grid etc. with fundamental figure is replaced, is generated
Rough three-dimensional building model；Three-dimensional building model mainly carries out three-dimensional building modeling by aerial image.
Buildings model storage unit 8, for storing the three-dimensional building model generated by buildings model generation unit.
Model Matching unit 9, with relief model generation unit 5, texture blending unit 6, buildings model generation unit 7, aobvious
Show that unit 10 connects, for by making the vertex on three-dimensional building model meshes bottom surface and corresponding landform Texture Matching, realizing will
Three-dimensional building model coordinate systems are converted into the projected coordinate system of digital elevation model, are built so as to generate three-dimensional terrain model with three-dimensional
Build the D Urban model that model matches.
Display unit 10, for showing the D Urban model generated by modeling unit on the computer screen.
As shown in Fig. 2, new city three-dimensional modeling method provided in an embodiment of the present invention comprises the following steps：
Step 1 receives the digital elevation model (DEM) in modeling region, and digital elevation model is one group of orderly array of values
It represents the actual ground model of ground elevation, realizes the digitized simulation to modeling localized ground landform, digital elevation model can
It is obtained by modes such as measurement, aerospace photogrammetry, topographic map acquisitions；
Step 2 extracts elevational point in digital elevation model, forms the landform being made of elevational point and expresses, by elevational point
It is connected with two neighboring elevational point, forms triangular irregular net, i.e. three-dimensional grid.By three-dimensional grid carry out it is dizzy color in, it is raw
Into three-dimensional terrain model.By the same place between multiple camera images, (the identical point of i.e. adjacent image overlap area also known as corresponds to
Point), the parameters such as inclination angle, the rotation drift angle of camera are calculated, camera is corrected using calculating parameter, makes camera when shooting photo
For theory state.Using camera calibration as a result, carrying out processing generation three-dimensional building model to image；
Step 3, from the related three-dimensional building model of the aerial and ground image extraction of input and the texture of ground model；
Step 4, from the related three-dimensional building model of the aerial and ground image extraction of input and the texture of ground model；
Step 5 shows the city threedimensional model of generation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
- A kind of 1. new city three-dimensional modeling control system, which is characterized in that the new city three-dimensional modeling control system bag It includes：Image input units are connected with camera calibrated unit and texture blending unit, for reception storage building in a computer Mould region is aerial and ground image；Camera calibrated unit connects with translation and spin data input unit, buildings model generation unit, buildings model storage unit It connects, extracts characteristic point in the picture, and distinguished point based establishes the correspondence between image, and camera is calculated according to correspondence Translation and rotation；The camera translation inputted according to translation and spin data input unit and spin data, calibration image input The aerial and ground image of unit input；Translation and spin data input unit, for receive by filming apparatus when obtaining aerial image attitude transducer record Translation and spin data；Digital elevation model input unit is connected with relief model generation unit, for receiving the digital elevation mould in modeling region Type；Relief model generation unit for digital elevation model to be converted to three-dimensional grid, generates three-dimensional terrain model；Texture blending unit is connected with relief model generation unit, buildings model generation unit, for three-dimensional building model texture Extraction：According to the correspondence between each face of three-dimensional building model and image, three-dimensional building is extracted using correspondence relationship information The texture in each face；Three-dimensional terrain model texture blending：According to the coincidence point of dimensional topography grid and vertical air image, establish Correspond relation extraction texture；Buildings model generation unit for passing through the corresponding points between image, determines a large amount of three-dimensional coordinates on skin, Three-dimensional grid is built by three-dimensional coordinate；Buildings model storage unit, for storing the three-dimensional building model generated by buildings model generation unit；Model Matching unit connects with relief model generation unit, texture blending unit, buildings model generation unit, display unit It connects, for by making the vertex on three-dimensional building model meshes bottom surface and corresponding landform Texture Matching, realizing three-dimensional building mould Type coordinate system is converted into the projected coordinate system of digital elevation model, what generation three-dimensional terrain model matched with three-dimensional building model D Urban model；Display unit, for showing the D Urban model generated by modeling unit on the computer screen.
- 2. new city three-dimensional modeling control system as described in claim 1, which is characterized in that in the texture blending unit The image in each face of three-dimensional building model is blocked, and texture repairing is carried out using image is closed on；Three-dimensional terrain model texture blending： According to the coincidence point of dimensional topography grid and vertical air image, foundation corresponds relation extraction texture.
- 3. new city three-dimensional modeling control system as described in claim 1, which is characterized in that the buildings model generation is single Member by three-dimensional grid plane, cuboid replaced with fundamental figure, generate rough three-dimensional building model；Three-dimensional building model leads to It crosses aerial image and carries out three-dimensional building modeling.
- 4. a kind of new city three-dimensional modeling method of new city three-dimensional modeling control system as described in claim 1, special Sign is that the new city three-dimensional modeling control method comprises the following steps：Step 1 receives the digital complex demodulation in modeling region, to modeling the digitized simulation of localized ground landform, and leads to Cross measurement, aerospace photogrammetry, topographic map acquisition mode acquisition data；Step 2 extracts elevational point in digital elevation model, forms the landform being made of elevational point and expresses, by elevational point and phase Adjacent two elevational points connection, forms irregular three-D grid；By three-dimensional grid carry out it is dizzy color in, generate three-dimensional terrain model； By the same place between multiple camera images, inclination angle, the rotation drift angle parameter of camera are calculated, school is carried out to camera using calculating parameter Just；Using camera calibration as a result, carrying out processing generation three-dimensional building model to image；Step 3, from the related three-dimensional building model of the aerial and ground image extraction of input and the texture of ground model；Step 4, from the related three-dimensional building model of the aerial and ground image extraction of input and the texture of ground model；Step 5 shows the city threedimensional model of generation.
- 5. a kind of computer for being equipped with new city three-dimensional modeling control system described in claims 1 to 3 any one.
- 6. a kind of satellite for being equipped with new city three-dimensional modeling control system described in claims 1 to 3 any one.
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| CN108829941A (en) * | 2018-05-25 | 2018-11-16 | 湖南城市学院 | A kind of assembled architecture design device and method |
| CN109885631A (en) * | 2019-01-18 | 2019-06-14 | 杭州志远科技有限公司 | A kind of city digital map three-dimensional modeling manufacturing system and its method |
| CN110148219A (en) * | 2019-04-03 | 2019-08-20 | 南昌云虫科技有限公司 | The creation method of 3D model |
| CN110705096A (en) * | 2019-09-30 | 2020-01-17 | 南京丰恒嘉乐电子科技有限公司 | Course measurement modeling system adaptive to golf simulation software and application method thereof |
| CN111105498A (en) * | 2019-12-31 | 2020-05-05 | 中航华东光电深圳有限公司 | Three-dimensional real-time map construction method and device |
| CN111640182A (en) * | 2020-04-20 | 2020-09-08 | 南京征帆信息科技有限公司 | Wall surface texture drawing system and method |
| CN111651050A (en) * | 2020-06-09 | 2020-09-11 | 浙江商汤科技开发有限公司 | Method and device for displaying urban virtual sand table, computer equipment and storage medium |
| CN111651055A (en) * | 2020-06-09 | 2020-09-11 | 浙江商汤科技开发有限公司 | City virtual sand table display method and device, computer equipment and storage medium |
| WO2023280038A1 (en) * | 2021-07-05 | 2023-01-12 | 华为技术有限公司 | Method for constructing three-dimensional real-scene model, and related apparatus |
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| CN111640182A (en) * | 2020-04-20 | 2020-09-08 | 南京征帆信息科技有限公司 | Wall surface texture drawing system and method |
| CN111640182B (en) * | 2020-04-20 | 2023-04-07 | 南京征帆信息科技有限公司 | Wall surface texture drawing system and method |
| CN111651050A (en) * | 2020-06-09 | 2020-09-11 | 浙江商汤科技开发有限公司 | Method and device for displaying urban virtual sand table, computer equipment and storage medium |
| CN111651055A (en) * | 2020-06-09 | 2020-09-11 | 浙江商汤科技开发有限公司 | City virtual sand table display method and device, computer equipment and storage medium |
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