CN106408640B - Three-dimensional map models the fast linked rendering method of surface layer profile - Google Patents
Three-dimensional map models the fast linked rendering method of surface layer profile Download PDFInfo
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- 238000012216 screening Methods 0.000 claims abstract description 4
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/005—General purpose rendering architectures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/04—Texture mapping
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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Abstract
The present invention relates to three-dimensional map technical fields, provide a kind of three-dimensional map modeling fast linked rendering method of surface layer profile, including 1, acquisition building coordinate information, establish three-dimensional map model；2, patch regional characteristics is analyzed, the space coordinate that model batch determines unmanned plane shooting point is reversely deduced according to mathematics；3, the space coordinate of shooting point is stored；4, unmanned plane shooting point space coordinate inputs unmanned plane, realizes unmanned plane automatic shooting；5, according to patch provincial characteristics point information, automatic screening shooting photo is matching, carries out patch operation.The invention has the benefit that reversely deducing model, unmanned plane and intelligent mount technology by three-dimensional map modeling, cloud computing, mathematics, the three-dimensional modeling surface layer rendering efficiently to link is realized, it is true that three-dimensional map surface layer textural characteristics are presented；Automatic batch generates unmanned plane shooting point, avoids the positional shift of artificial selection, improves work continuity while ensureing rendering picture quality, saves human and material resources.
Description
Technical field
The present invention relates to three-dimensional map technical field, in particular to a kind of three-dimensional map models the fast linked wash with watercolours of surface layer profile
Dyeing method.
Background technique
Currently, with the quickening of urbanization process, urban development is maked rapid progress.The fusion of the industrialization of information, so that city
Information integration becomes inexorable trend, and " digital city " construction has been pulled to national strategy level, city electronic three-dimensional map
Foundation plays an increasingly important role wherein.Three-dimensional map gives user, and intuitively outdoor scene shows, and is the trip of user
Map inquiry, navigation directions offer are convenient, while providing hommization clothes in terms of e-commerce, daily information, publicity
Business veritably builds urban informationization system, realizes the national strategic aim of " digital city ".
Three-dimensional map is modeled in quickly and effectively to be developed in recent years, pushed to a certain extent urban informationization into
Journey, on this basis, in order to further vividly truly show digital city, allow user experience closer to information city take
The method of business, three-dimensional map modeling surface layer profile patch has also obtained corresponding research and development.
Currently, there is proposition to construct real-time three-dimensional map using unmanned plane, information extraction analysis is carried out by environment sensing,
To realize positioning and three-dimensional map building, in the uncertain situation of self-position, there is certain application value, but need
Constantly judgement selects new picture shooting point, expends considerable time and effort, also not can guarantee optimal patch shooting point；
In addition, having proposition to obtain generates two-dimensional map texture by two-dimension vector map data and digital altitude data, given birth to by processing
At textured three-dimensional map, efficiency and speed are improved during patch, but in the acquisition of the picture of early period or is needed
Very important person is shooting, needs a large amount of economic cost and time cycle etc..
Summary of the invention
It is quick the object of the invention is to overcome the deficiencies of the prior art and provide a kind of three-dimensional map modeling surface layer profile
Link rendering method.The skills such as model, unmanned plane and intelligent patch are reversely deduced by three-dimensional map modeling, cloud computing, mathematics
Art realizes the three-dimensional modeling surface layer rendering efficiently to link, three-dimensional map surface layer textural characteristics is truly presented；The method can lead to
Founding mathematical models are crossed, automatic batch generates optimal unmanned plane shooting point, avoids the positional shift of artificial selection, ensureing
While obtaining the quality of three-dimensional map modeling surface layer rendering picture, the continuity of work is also effectively improved, has been saved big
The resources such as the manpower and material resources of amount.
A kind of three-dimensional map of the present invention models the fast linked rendering method of surface layer profile, includes the following steps:
Step 1: on the basis of obtaining building coordinate information, each floor structure layout of framework building establishes institute
State the three-dimensional map model of building；
Step 2: the characteristics of analyzing the building patch region, reversely deduces model according to mathematics, batch determines nobody
The space coordinate of machine shooting point；
Step 3: the space coordinate of the batch unmanned plane shooting point of the determination in step 2 is stored in server.
Further, further include Step 4: transfer the unmanned plane shooting point space coordinate of building from the server end,
It is input in unmanned plane, realizes the automatic picture shooting of unmanned plane.
It further, further include calculating the building Step 5: reversely deduce model by the mathematics in step 2
The patch provincial characteristics point information in each face of three-dimensional map model, obtains according in the characteristic point information automatic screening step 4
Unmanned plane shooting photo it is matching, carry out three-dimensional map model surface layer profile patch operation.
Further, building design drawing or construction drawing of the building coordinate information in step 1 from the building.
Further, the building design drawing or construction drawing are CAD diagram, on the basis of the CAD diagram, complete building
Floor structure feature framework connects relating dot and face, the whole 3 D stereo cartographic model for generating the building.
Further, in step 2 the space coordinate of unmanned plane shooting point include unmanned plane height, longitude and latitude and direction.
Further, single user or multi-user transfer from the server in real time by PC, desktop computer or mobile terminal builds
The unmanned plane shooting point space coordinate for building object, is input in unmanned plane, realizes the automatic picture shooting of unmanned plane.
The present invention also provides a kind of three-dimensional map system, building is by above-mentioned some or all of in the map system
The three-dimensional map modeling fast linked rendering method of surface layer profile obtains.
The invention has the benefit that
1, Building Modeling from inside to outside, reproduces the three-dimensional of building according to architectural design or construction CAD diagram, true and accurate
Stereochemical structure；
2, the shooting point information collection in each patch region of Mass production building, by shooting point data storage to server
In；Evade artificial intuition selection shooting point, avoids manual operation bring picture stitching error；It can be with facing multiple users reality
When obtain building shooting point data, shooting point information is transmitted to unmanned plane, the amount of redundancy of setting shooting picture is automatic to carry out
Multiple region picture shootings, greatly enhance working efficiency, have saved cost, shorten the duty cycle；
3, model is reversely deduced by mathematics, shooting picture and patch area characteristic information Auto-matching is really realized
The fast linked, intelligent, efficient of rendering method, accuracy.
Detailed description of the invention
Fig. 1 show a kind of process of the three-dimensional map modeling fast linked rendering method of surface layer profile of the embodiment of the present invention and shows
It is intended to.
Fig. 2 show unmanned plane shooting point generation method flow chart in the embodiment of the present invention.
Specific embodiment
Below in conjunction with specific attached drawing the present invention is described in detail specific embodiment.It should be noted that in following embodiments
The combination of the technical characteristic or technical characteristic of description is not construed as isolated, they can be combined with each other to reaching
To superior technique effect.In the drawings of the following embodiments, the identical label that each attached drawing occurs represent identical feature or
Person's component, can be apply to different embodiments.
A kind of three-dimensional map of the embodiment of the present invention models the fast linked rendering method of surface layer profile, includes the following steps:
Step 1: on the basis of obtaining building coordinate information, each floor structure layout of framework building establishes institute
State the three-dimensional map model of building；
Step 2: the characteristics of analyzing the building patch region, reversely deduces model according to mathematics, batch determines nobody
The space coordinate of machine shooting point；
Step 3: the space coordinate of the batch unmanned plane shooting point of the determination in step 2 is stored in server.
Step 4: transferring the unmanned plane shooting point space coordinate of building from the server end, it is input in unmanned plane,
Realize the automatic picture shooting of unmanned plane.
Step 5: reversely deducing model by the mathematics in step 2, calculate that the three-dimensional map model of the building is every
The patch provincial characteristics point information in a face is shone according to characteristic point information automatic screening unmanned plane shooting obtained in step 4
Piece is matching, carries out the operation of three-dimensional map model surface layer profile patch.
Building design drawing or construction drawing of the building coordinate information from the building in step 1.The building is set
Meter figure or construction drawing are CAD diagram, on the basis of the CAD diagram, complete building floor structure feature framework, connect relating dot
And face, the whole 3 D stereo cartographic model for generating the building.
The space coordinate of unmanned plane shooting point includes height, longitude and latitude and the direction of unmanned plane in step 2.
Single user or multi-user by PC, desktop computer or mobile terminal in real time from the server transfer building nobody
Machine shooting point space coordinate, is input in unmanned plane, realizes the automatic picture shooting of unmanned plane.
A kind of detailed process such as Fig. 1 institute of the three-dimensional map modeling fast linked rendering method of surface layer profile of the embodiment of the present invention
Show.
The present invention also provides a kind of three-dimensional map system, building is by above-mentioned some or all of in the map system
The three-dimensional map modeling fast linked rendering method of surface layer profile obtains.
Above-mentioned mathematics reversely deduces model, refers on the basis of knowing fabric structure spatial coordinated information, root
According to the architectural characteristic of building itself, using Mathematical Modeling Methods, the reversed optimum height released when unmanned plane is taken pictures, longitude and latitude
The direction and.The method of mathematical modeling can be pure theory model, be also possible to be returned according to the summary of a large amount of empirical data in the past
It receives and (shoots the picture and the matched effect of later period patch of various different structure forms according to unmanned plane, summary and induction goes out to be directed to not
With the optimum photographing position of structure type unmanned plane, this step needs a large amount of cloud computing)；On the one hand, pass through mathematics reverse push
Unmanned plane can be greatly improved after inputting unmanned plane by drilling take pictures height, longitude and latitude and directional information of the batch unmanned plane that model obtains
The efficiency for shooting photo, solves traditional artificial control unmanned plane and takes pictures and be difficult to avoid that the technical problem of a large amount of invalid photos；Separately
On the one hand, the photo of unmanned plane shooting carries accurate location information, keeps photo matching work when later period patch highly efficient.
Following mathematics reversely deduce model, are intended only as example, can take any other well known mathematical model or
Empirical model reversely deduces the shooting point of unmanned plane.
In the present embodiment, the generation method of unmanned plane shooting point mainly includes two big steps:
1, the shooting grouping of delta-shaped region picture:
1) judge whether the delta field surface in same shooting face is smooth；
2) judge whether the delta-shaped region direction in same shooting face is consistent；
3) judge whether the interval of the delta-shaped region in same shooting face to each other is sufficiently small (being almost bonded).
2, the shooting of Delta Region photo overall picture
1) consider that unmanned plane carries visible angle of the camera up and down with left and right；
2) consider to plan reserved space proportion on the photo of Delta Region, in order to which intermediate imaging effect is best；
3) judge whether there is barrier before unmanned plane carries camera camera site, whether sight is blocked (if clapped incomplete
Delta Region photo increases the depression angle of camera, recalculates distance and position, until the shooting point position that do not block is true
It is fixed).
Unmanned plane shooting point generation method detailed process is as shown in Figure 2 in the present embodiment.
In actual use, by the CAD coordinate information of building, and according to for the completion of floor structure feature framework
On the basis of, relating dot and face are connected, integrally draws high and generates three-dimensional map model, the three-dimensional stereo model of building is truly presented,
To be conducive to the triangle patch region division of the every part of three-dimensional map model.In order to determine optimal unmanned plane shooting point, needle
Model analysis mechanism is established to Delta Region and carries out a large amount of cloud computing, reaches the accurate acquisition of Delta Region picture.This
Outside, it establishes mathematics and reversely deduces model, according to the coordinate of known model Delta Region and the area of wanted shooting area, reversely
Longitude and latitude, height and the directional information collection of unmanned plane shooting point are deduced out, thus the shooting point of each region picture of Mass production
Information collection, by shooting point data storage into server.Effectively evade and shooting point is selected by artificial intuition, has avoided people
To operate bring picture stitching error.Simultaneously as shooting point information is stored in server, it can be real-time with facing multiple users
Ground, which obtains, builds shooting point data, shooting point information is transmitted to unmanned plane, setting shoots the amount of redundancy of picture, and automatic progress is more
Region picture shooting is opened, working efficiency is greatly enhanced, has saved cost, shorten the duty cycle.Unmanned plane is automatic
Shooting picture complete and then it is secondary reversely deduce model by the mathematics set up, the characteristic information based on Delta Region will be clapped
It takes the photograph picture to be matched with it, carries out three-dimensional map surface layer profile and combine automatically, realize the rendering of region patch.In order to guarantee maximum
Limit close to true three-dimension scene, carry out the processing of regional area picture, screened the most from the multiple pictures that unmanned plane is shot
Suitable picture carries out plurality of pictures fusion, is subject to marginalisation, criticalization operation, and final realize really has surface layer profile knot
The three-dimensional map model of structure feature provides the technology branch of three-dimensional map model surface layer profile rendering for the development of " digital city "
Support, provides the method and channel of more linkage, high efficiency, convenience and accuracy for three-dimensional modeling surface layer patch.
The invention has the benefit that
1, Building Modeling from inside to outside, reproduces the three-dimensional of building according to architectural design or construction CAD diagram, true and accurate
Stereochemical structure；
2, the shooting point information collection in each patch region of Mass production building, by shooting point data storage to server
In；Evade artificial intuition selection shooting point, avoids manual operation bring picture stitching error；It can be with facing multiple users reality
When obtain building shooting point data, shooting point information is transmitted to unmanned plane, the amount of redundancy of setting shooting picture is automatic to carry out
Multiple region picture shootings, greatly enhance working efficiency, have saved cost, shorten the duty cycle；
3, model is reversely deduced by mathematics, shooting picture and patch area characteristic information Auto-matching is really realized
The fast linked, intelligent, efficient of rendering method, accuracy.
Although having been presented for several embodiments of the present invention herein, it will be appreciated by those of skill in the art that
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment is only exemplary, no
It should be using the embodiments herein as the restriction of interest field of the present invention.
Claims (5)
1. a kind of three-dimensional map models the fast linked rendering method of surface layer profile, which comprises the steps of:
Step 1: on the basis of obtaining building coordinate information, each floor structure layout of framework building is built described in foundation
Build the three-dimensional map model of object；
Step 2: the characteristics of analyzing the building patch region, reversely deduces model according to mathematics, batch determines that unmanned plane is clapped
Take the photograph space coordinate a little；The space coordinate of the unmanned plane shooting point includes height, longitude and latitude and the direction of unmanned plane；
Step 3: the space coordinate of the batch unmanned plane shooting point of the determination in step 2 is stored in server；
Step 4: transferring the unmanned plane shooting point space coordinate of building from the server end, it is input in unmanned plane, realizes
The automatic picture of unmanned plane is shot；
Step 5: reversely deducing model by the mathematics in step 2, each face of three-dimensional map model of the building is calculated
Patch provincial characteristics point information, according to characteristic point information automatic screening unmanned plane obtained in step 4 shooting photo with
Matching, carry out three-dimensional map model surface layer profile patch operation.
2. three-dimensional map as described in claim 1 models the fast linked rendering method of surface layer profile, which is characterized in that step 1
In building design drawing or construction drawing of the building coordinate information from the building.
3. three-dimensional map as claimed in claim 2 models the fast linked rendering method of surface layer profile, which is characterized in that described to build
Building design drawing or construction drawing is CAD diagram, on the basis of the CAD diagram, completes building floor structure feature framework, connection is closed
Connection point and face, the whole 3 D stereo cartographic model for generating the building.
4. three-dimensional map as described in claim 1 models the fast linked rendering method of surface layer profile, which is characterized in that single user
Or multi-user transfers the unmanned plane shooting point space coordinate of building by PC or mobile terminal from the server in real time, input
Into unmanned plane, the automatic picture shooting of unmanned plane is realized.
5. a kind of three-dimensional map system, which is characterized in that building is by such as claim some or all of in the map system
The described in any item three-dimensional map modeling fast linked rendering methods of surface layer profile of 1-4 obtain.
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| CN107590826A (en) * | 2017-08-02 | 2018-01-16 | 深圳市可飞科技有限公司 | Control method, control system and the unmanned plane of unmanned plane automatic camera |
| CN107845122B (en) * | 2017-09-08 | 2022-06-10 | 百度在线网络技术（北京）有限公司 | Method and device for determining planar information of building |
| CN107808585A (en) * | 2017-11-02 | 2018-03-16 | 武汉大学 | A kind of preparation method of garden landscape map |
| CN109708622A (en) * | 2017-12-15 | 2019-05-03 | 福建工程学院 | The method that three-dimensional modeling is carried out to building using unmanned plane based on Pixhawk |
| CN109685902B (en) * | 2018-12-25 | 2022-06-24 | 成都四方伟业软件股份有限公司 | Building model effect generation method and device |
| CN111062996A (en) * | 2019-11-29 | 2020-04-24 | 广东优世联合控股集团股份有限公司 | Rendering method of construction drawing |
| CN111750830B (en) * | 2019-12-19 | 2023-02-14 | 广州极飞科技股份有限公司 | Land parcel surveying and mapping method and system |
| CN111369668A (en) * | 2020-03-06 | 2020-07-03 | 西安奥卡云数据科技有限公司 | Method for automatically drawing 3D model |
| CN111829490A (en) * | 2020-07-16 | 2020-10-27 | 广州安廷数字技术有限公司 | Unmanned aerial vehicle three-dimensional city modeling system |
| CN112991558B (en) * | 2021-05-10 | 2021-08-06 | 南京千目信息科技有限公司 | Map editing method and map editor |
| CN114781036A (en) * | 2022-04-26 | 2022-07-22 | 云知声智能科技股份有限公司 | Building information model modeling and rendering method, device, equipment and medium |
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| CN105388905A (en) * | 2015-10-30 | 2016-03-09 | 深圳一电航空技术有限公司 | Unmanned aerial vehicle flight control method and device |
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| CN103544734A (en) * | 2013-10-11 | 2014-01-29 | 深圳先进技术研究院 | Street vie based three-dimensional map modeling method |
| CN105388905A (en) * | 2015-10-30 | 2016-03-09 | 深圳一电航空技术有限公司 | Unmanned aerial vehicle flight control method and device |
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