CN109711035A - City model construction method and device - Google Patents
City model construction method and device Download PDFInfo
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- CN109711035A CN109711035A CN201811579054.2A CN201811579054A CN109711035A CN 109711035 A CN109711035 A CN 109711035A CN 201811579054 A CN201811579054 A CN 201811579054A CN 109711035 A CN109711035 A CN 109711035A
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Abstract
The present embodiments relate to City Modeling technical fields, specifically, it is related to a kind of city model construction method and device, this method generates the road net model of target cities based on satellite mapping, on the one hand the solid modelling of setting building can be carried out in road net model based on the setting landmark region data in modeling instruction and the physical model parameter acquired, on the other hand white mould modeling can be carried out in road net model based on satellite mapping, modeling cost is effectively reduced under the premise of ensure that city model precision, so, it can be realized the flexible modeling to target cities.
Description
Technical field
The present embodiments relate to City Modeling technical field, in particular to a kind of city model construction method and
Device.
Background technique
The fast development of the information technologies such as internet, Internet of Things and cloud computing, which has expedited the emergence of out, surmounts the big of previous any age
Data, due to data itself do not have can be readability, data visualization technique becomes particularly important.Wherein, city model
Building complement each other with data visualization technique, city model is allowed one to more intuitive and is efficiently carried out to city
Monitoring and management, big data and city model are combined, and people can be assisted to know the information of big data behind clearly, complete people
With the communication of " data " and exchange.
It can be seen that the building to city model has far-reaching significance.But existing city model construction method spirit
Activity is lower.
Summary of the invention
In view of this, the present invention provides a kind of city model construction method and devices.
The embodiment of the invention provides a kind of city model construction methods, comprising:
The modeling instruction of user's input is received, parsing obtains the target cities title for including in the modeling instruction, setting
Landmark region data and setting building name；
According to the satellite mapping of target cities name acquiring target cities；
The road net model of the target cities is generated based on the satellite mapping；
The physical model parameter of setting building is obtained according to the setting building name；
Based on the setting landmark region data and the physical model parameter carried out in the road net model described in set
Determine the solid modelling of building；
White mould modeling is carried out in the road net model based on the satellite mapping.
Optionally, the method also includes:
The road net model for completing solid modelling and Bai Mo modeling is rendered and marked.
Optionally, it is carried out in the road net model based on the setting landmark region data and the physical model parameter
The step of solid modelling of the setting building, comprising:
First position of the setting building in the road net model is determined based on the landmark region data；
The physical model parameter is subjected to equal proportion scaling, and the entity completed according to scaling based on the road net model
Model parameter generates the physical model of the setting building at the first position.
Optionally, the step of modeling of white mould is carried out in the road net model based on the satellite mapping, comprising:
Obtain the geographical location information of at least one building in the satellite mapping in addition to the setting building；
White mould model corresponding at least one described building is found out in white mould model library from presetting；
The white mould model is added to the second position in the road net model according to the geographical location information.
Optionally, from presetting the step for finding out white mould model corresponding at least one described building in white mould model library
Suddenly, comprising:
Obtain the accuracy value for presetting the white mould model of each of white mould model library；
For each accuracy value acquired, the absolute value of the difference of the accuracy value and given threshold is calculated；
Minimum value is found out from the multiple absolute values being calculated, obtain the corresponding white mould model of the minimum value and is made
For the corresponding white mould model of at least one described building.
The embodiment of the invention also provides a kind of city model construction devices, comprising:
Command analysis module is modeled, for receiving the modeling instruction of user's input, parsing obtains wraps in the modeling instruction
Target cities title, setting landmark region data and the setting building name included；
Satellite mapping obtains module, for the satellite mapping according to target cities name acquiring target cities；
Road net model generation module, for generating the road net model of the target cities based on the satellite mapping；
Physical model parameter acquisition module, for obtaining the entity mould of setting building according to the setting building name
Shape parameter；
Solid modelling module, for being based on the setting landmark region data and the physical model parameter in the road network
The solid modelling of the setting building is carried out in model；
White mould modeling module, for carrying out white mould modeling in the road net model based on the satellite mapping.
Optionally, described device further include:
Post-processing module, for the road net model for completing solid modelling and Bai Mo modeling to be rendered and marked.
Optionally, the solid modelling module is based on the setting landmark region data and the entity in the following manner
Model parameter carries out the solid modelling of the setting building in the road net model:
First position of the setting building in the road net model is determined based on the landmark region data；
The physical model parameter is subjected to equal proportion scaling, and the entity completed according to scaling based on the road net model
Model parameter generates the physical model of the setting building at the first position.
Optionally, the white mould modeling module is based on the satellite mapping in the following manner and carries out in the road net model
Bai Mo modeling:
Obtain the geographical location information of at least one building in the satellite mapping in addition to the setting building；
White mould model corresponding at least one described building is found out in white mould model library from presetting；
The white mould model is added to the second position in the road net model according to the geographical location information.
Optionally, the white mould modeling module in the following manner from preset found out in white mould model library with it is described at least
The corresponding white mould model of one building:
Obtain the accuracy value for presetting the white mould model of each of white mould model library；
For each accuracy value acquired, the absolute value of the difference of the accuracy value and given threshold is calculated；
Minimum value is found out from the multiple absolute values being calculated, obtain the corresponding white mould model of the minimum value and is made
For the corresponding white mould model of at least one described building.
The embodiment of the invention also provides a kind of server-side, including memory, processor and storage are on a memory simultaneously
The computer program that can be run on a processor, the processor realize above-mentioned city model when executing the computer program
Construction method.
The embodiment of the invention also provides a kind of computer readable storage medium, the readable storage medium storing program for executing includes computer
Program, the server-side computer program controls the readable storage medium storing program for executing when running where execute above-mentioned city model building
Method.
Beneficial effect
A kind of city model construction method and device provided in an embodiment of the present invention generate target cities based on satellite mapping
On the one hand road net model can be existed based on the setting landmark region data in modeling instruction and the physical model parameter acquired
The solid modelling of setting building is carried out in road net model, on the other hand white mould can be carried out in road net model based on satellite mapping
Modeling, effectively reduces modeling cost under the premise of ensure that city model precision, so, it is possible to realize to target cities
Flexibly modeling.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of block diagram of server-side 10 provided by the embodiment of the present invention.
Fig. 2 is a kind of flow chart of city model construction method provided by the embodiment of the present invention.
Fig. 3 is the schematic diagram for the sub-step that step S25 shown in Fig. 2 includes in an embodiment.
Fig. 4 is the schematic diagram for the sub-step that step S26 shown in Fig. 2 includes in an embodiment.
Fig. 5 is a kind of module frame chart of city model construction device 20 provided by the embodiment of the present invention.
Icon:
10- server-side；11- memory；12- processor；13- network module；
20- city model construction device；21- models command analysis module；22- satellite mapping obtains module；23- road net model
Generation module；24- physical model parameter acquisition module；25- solid modelling module；The white mould modeling module of 26-.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment only
It is a part of the embodiments of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings
The component of embodiment can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Inventor further investigation reveals that, there are mainly two types of the common methods constructed to city model:
1) it restores the visual condition of city model according to the mode taken pictures in real time manually, and various in city model is built
The structure for building facility is worked it out, although this method modeling accuracy is high, can expend sizable cost.
2) city model is generated using satellite map, high level data, plot data etc., this method can be effectively reduced into
This, but above data update is slower, it is difficult to it is obtained by general channel, even if having got above data, the city of generation
Model is integral model, can not part building therein individually be handled or be modified, reduce the flexibility of modeling,
In addition, the model accuracy that this method is established is lower.
Defect present in the above scheme in the prior art, is that inventor is obtaining after practicing and carefully studying
As a result, therefore, the solution that the discovery procedure of the above problem and the hereinafter embodiment of the present invention are proposed regarding to the issue above
Scheme all should be the contribution that inventor makes the present invention in process of the present invention.
Based on the studies above, the embodiment of the invention provides a kind of city model construction method and devices, can guarantee
Modeling cost is effectively reduced under the premise of certain modeling accuracy, neatly target cities can be modeled.
Fig. 1 shows a kind of block diagram of server-side 10 provided by the embodiment of the present invention.In the embodiment of the present invention
Server-side 10 have data storage, transmission, processing function, as shown in Figure 1, server-side 10 includes: memory 11, processor
12, network module 13 and city model construction device 20.
It is directly or indirectly electrically connected between memory 11, processor 12 and network module 13, to realize the biography of data
Defeated or interaction.It is electrically connected for example, these elements can be realized from each other by one or more communication bus or signal wire.
City model construction device 20 is stored in memory 11, the city model construction device 20 includes at least one can be with software
Or the form of firmware (firmware) is stored in the software function module in the memory 11, the processor 12 passes through operation
The city model construction device 20 being stored in the software program and module, such as the embodiment of the present invention in memory 11, from
And perform various functions application and data processing, that is, realize the city model construction method in the embodiment of the present invention.
Wherein, the memory 11 may be, but not limited to, random access memory (Random Access Memory,
RAM), read-only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Wherein, memory 11 is for storing program, and the processor 12 executes described program after receiving and executing instruction.
The processor 12 may be a kind of IC chip, the processing capacity with data.Above-mentioned processor 12
It can be general processor, including central processing unit (Central Processing Unit, CPU), network processing unit
(Network Processor, NP) etc..It may be implemented or execute each method, step disclosed in the embodiment of the present invention and patrol
Collect block diagram.General processor can be microprocessor or the processor is also possible to any conventional processor etc..
Network module 13 is used to establish the communication connection between server-side 10 and other communication terminal devices by network, real
The transmitting-receiving operation of existing network signal and data.Above-mentioned network signal may include wireless signal or wire signal.
It is appreciated that structure shown in FIG. 1 is only to illustrate, server-side 10 may also include than shown in Fig. 1 more or more
Few component, or with the configuration different from shown in Fig. 1.Each component shown in Fig. 1 can use hardware, software or its group
It closes and realizes.
The embodiment of the present invention also provides a kind of computer readable storage medium, and the readable storage medium storing program for executing includes computer journey
Sequence.Server-side 10 computer program controls the readable storage medium storing program for executing when running where executes following city model building
Method.
The core ideas of the present embodiment be by target cities setting building physical model and other buildings it is white
Mould model is superimposed in the road net model of target cities, on the one hand, road net model can restore completely the road conditions of target cities and
Occupy that resource is less, the physical model for setting building can either improve the precision of target cities model and be able to reflect target city again
On the other hand the characteristics of city, since white mould model accuracy is lower, selects white mould model for other buildings, can effectively reduce
Modeling cost, therefore, the present embodiment can effectively reduce modeling cost under the premise of guaranteeing target cities model accuracy, and
The white mould model that different model accuracies can be chosen based on actual conditions, is neatly realized the building of city model.
Fig. 2 shows a kind of flow charts of city model construction method provided by the embodiment of the present invention.The method has
Method and step defined in the process of pass is applied to server-side 10, can be realized by the processor 12.It below will be to shown in Fig. 2
Detailed process be described in detail:
Step S21, receive user input modeling instruction, parsing obtain modeling instruction in include target cities title,
Set landmark region data and setting building name.
Server-side 10 receive the input of user according to actual needs modeling instruction after, which can be instructed into
Row parsing obtains the target cities title for including in modeling instruction, setting landmark region data and setting building name.
For example, target cities title can be A, landmark region data are set as Zone, set building name as B.
Landmark region data Zone is set for determining position of the setting building B in city model, it will be understood that set
Determining landmark region data Zone can be made the appropriate adjustments based on actual conditions, in this way, compared to the side directly taken pictures using outdoor scene
The city model that formula generates is more flexible.
Step S22, according to the satellite mapping of target cities name acquiring target cities.
For example, the satellite mapping of target cities A is obtained, compared to high level data and plot data etc., the acquisition way of satellite mapping
Diameter is convenient, can be obtained by internet.
Step S23 generates the road net model of target cities based on satellite mapping.
Using the satellite mapping that acquires carry out the road net model of target cities A delineate build, it will be understood that road network
As the key mark in a city, it can allow user that can recognize the corresponding city of road network, therefore, target cities at a glance
The road net model of A restores completely, and the occupied resource of road net model is less, so, it is possible as city model later
Accurately build offer basis.
Step S24 obtains the physical model parameter of setting building based on setting building name.
For example, set building B as school, the physical model parameter of the available school of server-side 10 at this time, wherein real
Body Model parameter includes three-dimensional structure and shape of school etc., and physical model parameter can restore school, therefore shared
Fine arts resource is also more, so the present embodiment, which can choose limited setting building according to modeling instruction, carries out physical model parameter
Acquisition, for purposes of illustration only, the present embodiment is illustrated with a setting building.
Optionally, setting building can be the landmark object in the city, important building object etc., in another example, at
For the high and new technology industrial development zone of city, setting building can be global center (landmark).
Step S25 carries out the setting based on setting landmark region data and physical model parameter in road net model and builds
Build the solid modelling of object.
Fig. 3 is please referred to, lists the one of which of step S25 in the present embodiment by step S251 and step S252
Implementation.
Step S251 determines first position of the setting building in road net model based on landmark region data.
It is appreciated that landmark region data Zone can be finely tuned according to the actual situation, for example, may deposit in road net model
The a plurality of intersection the case where, position of the corresponding setting building B of landmark region data Zone in road net model at this time
It may be displaced on road, therefore terrestrial reference area data Zone can be finely adjusted to eliminate the offset of setting building B.
Physical model parameter is carried out equal proportion scaling, and the reality completed according to scaling based on road net model by step S252
Body Model parameter generates the physical model of setting building at the first position in road net model.
It is appreciated that road net model is drawn according to satellite mapping, there is proportionate relationship with the actual road conditions of target cities,
Therefore, when generating the physical model of setting building B, it is also desirable to equal proportion scaling is carried out, for example, road L is in practice
Length is 800m but the length in road net model is 0.1m, sets the height of building B in practice as 40m, then setting
Height of the building B in road net model should be 0.005m.
Further, the physical model parameter completed based on scaling generates setting building at the first position of road net model
The physical model of object B, it will be understood that since the physical model is equal proportion scaling, and physical model is accurate to setting building
The internal structure and facility of object B, therefore model accuracy with higher, the resource of occupancy are also more.
Step S26 carries out white mould modeling based on satellite mapping in road net model.
It please refers to Fig. 4, step S26 is listed by step S261, step S262 and step S263 in the present embodiment
One of implementation.
Step S261 obtains the geographical location information of at least one building in satellite mapping in addition to setting building.
It is appreciated that the significance level of at least one building in addition to setting building B is lower, therefore, can adopt
It is modeled with white mould to reduce the occupancy of resource and the cost of modeling.
Firstly, obtaining the geographical location information of at least one building based on satellite mapping.
Step S262 finds out white mould model corresponding at least one building from presetting in white mould model library.
It is appreciated that the white mould model of different model accuracies can choose according to the significance level of at least one building,
Further, from preset white mould model corresponding at least one building is found out in white mould model library can be by with lower section
Formula obtains:
Firstly, the accuracy value for presetting each white mould model in white mould model library is obtained, secondly, being based at least one building
The setting of threshold value is carried out, for example, the significance level of at least one building is lower, then given threshold can be smaller, then, calculates
The absolute value of the difference of each accuracy value and given threshold, and the corresponding white mould model of least absolute value is chosen as at least one
The white mould model of building so, it is possible rationally to weigh model accuracy and cost, have under the premise of guaranteeing white mould model accuracy
Effect reduces cost and workload.
White mould model is added to the second place in road net model according to geographical location information by step S263.
The white mould model of at least one building is added to the second place in road net model, it is common with physical model
Constitute the model of target cities A.
It optionally, can also be according to reality after obtaining the target cities A model with physical model and Bai Mo model
Border situation renders the model of target cities A, paints and data mark, and then realizes data visualization and city model
Combination the number in different periods school can be demarcated, and thereby extend into for example, setting building B as school
Surrounding buildings, the statistics of the related data of road, analysis and excavation.
It is appreciated that City Modeling method provided by the present embodiment, solid modelling and Bai Mo modeling are organically combined, and
Accuracy value based on actual demand dialogue mould model is adjusted, and so, it is possible to have under the premise of guaranteeing city model precision
Effect reduces modeling cost.
On the basis of the above, described as shown in figure 5, the embodiment of the invention provides a kind of city model construction device 20
City model construction device 20 includes: modeling command analysis module 21, satellite mapping acquisition module 22, road net model generation module
23, physical model parameter acquisition module 24, solid modelling module 25 and Bai Mo modeling module 26.
Command analysis module 21 is modeled, for receiving the modeling instruction of user's input, parsing is obtained in the modeling instruction
Including target cities title, setting landmark region data and setting building name.
Since modeling command analysis module 21 is similar with the realization principle of step S21 in Fig. 2, do not say more herein
It is bright.
Satellite mapping obtains module 22, for the satellite mapping according to target cities name acquiring target cities.
Since satellite mapping acquisition module 22 is similar with the realization principle of step S22 in Fig. 2, do not say more herein
It is bright.
Road net model generation module 23, for generating the road net model of the target cities based on the satellite mapping.
Since road net model generation module 23 is similar with the realization principle of step S23 in Fig. 2, do not say more herein
It is bright.
Physical model parameter acquisition module 24, for obtaining the entity of setting building according to the setting building name
Model parameter.
Since physical model parameter acquisition module 24 is similar with the realization principle of step S24 in Fig. 2, do not make herein more
More explanations.
Solid modelling module 25, for being based on the setting landmark region data and the physical model parameter on the road
The solid modelling of the setting building is carried out in pessimistic concurrency control.
Since solid modelling module 25 is similar with the realization principle of step S25 in Fig. 2, do not illustrate more herein.
White mould modeling module 26, for carrying out white mould modeling in the road net model based on the satellite mapping.
Since white mould modeling module 26 is similar with the realization principle of step S26 in Fig. 2, do not illustrate more herein.
To sum up, city model construction method and device provided by the embodiment of the present invention ensure that city model precision
Under the premise of effectively reduce modeling cost, so, it is possible to realize the flexible modeling to target cities.
In several embodiments provided by the embodiment of the present invention, it should be understood that disclosed device and method, it can also
To realize by another way.Device and method embodiment described above is only schematical, for example, in attached drawing
Flow chart and block diagram show that the devices of multiple embodiments according to the present invention, method and computer program product are able to achieve
Architecture, function and operation.In this regard, each box in flowchart or block diagram can represent module, a program
A part of section or code, a part of the module, section or code include that one or more is patrolled for realizing defined
Collect the executable instruction of function.It should also be noted that in some implementations as replacement, function marked in the box
It can occur in a different order than that indicated in the drawings.For example, two continuous boxes can actually be held substantially in parallel
Row, they can also be executed in the opposite order sometimes, and this depends on the function involved.It is also noted that block diagram and/or
The combination of each box in flow chart and the box in block diagram and or flow chart, can the function as defined in executing or dynamic
The dedicated hardware based system made is realized, or can be realized using a combination of dedicated hardware and computer instructions.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server-side 10 or the network equipment etc.) execute all or part of step of each embodiment the method for the present invention
Suddenly.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), deposits at random
The various media that can store program code such as access to memory (RAM, Random Access Memory), magnetic or disk.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of city model construction method characterized by comprising
The modeling instruction of user's input is received, parsing obtains the target cities title for including in the modeling instruction, setting terrestrial reference
Area data and setting building name；
According to the satellite mapping of target cities name acquiring target cities；
The road net model of the target cities is generated based on the satellite mapping；
The physical model parameter of setting building is obtained according to the setting building name；
The setting is carried out in the road net model based on the setting landmark region data and the physical model parameter to build
Build the solid modelling of object；
White mould modeling is carried out in the road net model based on the satellite mapping.
2. city model construction method according to claim 1, which is characterized in that the method also includes:
The road net model for completing solid modelling and Bai Mo modeling is rendered and marked.
3. city model construction method according to claim 1, which is characterized in that be based on setting landmark region data
The step of solid modelling of the setting building is carried out in the road net model with the physical model parameter, comprising:
First position of the setting building in the road net model is determined based on the landmark region data；
The physical model parameter is subjected to equal proportion scaling, and the physical model completed according to scaling based on the road net model
Parameter generates the physical model of the setting building at the first position.
4. city model construction method according to claim 1, which is characterized in that based on the satellite mapping in the road network
The step of modeling of white mould is carried out in model, comprising:
Obtain the geographical location information of at least one building in the satellite mapping in addition to the setting building；
White mould model corresponding at least one described building is found out in white mould model library from presetting；
The white mould model is added to the second place in the road net model according to the geographical location information.
5. city model construction method according to claim 4, which is characterized in that found out from presetting in white mould model library
The step of white mould model corresponding at least one described building, comprising:
Obtain the accuracy value for presetting the white mould model of each of white mould model library；
For each accuracy value acquired, the absolute value of the difference of the accuracy value and given threshold is calculated；
Minimum value is found out from the multiple absolute values being calculated, obtains the corresponding white mould model of the minimum value and as institute
State the corresponding white mould model of at least one building.
6. a kind of city model construction device characterized by comprising
Command analysis module is modeled, for receiving the modeling instruction of user's input, parsing, which obtains in the modeling instruction, includes
Target cities title, setting landmark region data and setting building name；
Satellite mapping obtains module, for the satellite mapping according to target cities name acquiring target cities；
Road net model generation module, for generating the road net model of the target cities based on the satellite mapping；
Physical model parameter acquisition module, the physical model for obtaining setting building according to the setting building name are joined
Number；
Solid modelling module, for being based on the setting landmark region data and the physical model parameter in the road net model
The middle solid modelling for carrying out the setting building；
White mould modeling module, for carrying out white mould modeling in the road net model based on the satellite mapping.
7. city model construction device according to claim 6, which is characterized in that described device further include:
Post-processing module, for the road net model for completing solid modelling and Bai Mo modeling to be rendered and marked.
8. city model construction device according to claim 6, which is characterized in that the solid modelling module passes through following
Mode is based on the setting landmark region data and the physical model parameter carries out the setting in the road net model and builds
Build the solid modelling of object:
First position of the setting building in the road net model is determined based on the landmark region data；
The physical model parameter is subjected to equal proportion scaling, and the physical model completed according to scaling based on the road net model
Parameter generates the physical model of the setting building at the first position.
9. city model construction device according to claim 6, which is characterized in that the white mould modeling module passes through following
Mode is based on the satellite mapping and carries out white mould modeling in the road net model:
Obtain the geographical location information of at least one building in the satellite mapping in addition to the setting building；
White mould model corresponding at least one described building is found out in white mould model library from presetting；
The white mould model is added to the second position in the road net model according to the geographical location information.
10. city model construction device according to claim 9, which is characterized in that the white mould modeling module by with
Under type finds out white mould model corresponding at least one described building from presetting in white mould model library:
Obtain the accuracy value for presetting the white mould model of each of white mould model library；
For each accuracy value acquired, the absolute value of the difference of the accuracy value and given threshold is calculated；
Minimum value is found out from the multiple absolute values being calculated, obtains the corresponding white mould model of the minimum value and as institute
State the corresponding white mould model of at least one building.
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| Publication number | Priority date | Publication date | Assignee | Title |
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