CN109978997A - A kind of transmission line of electricity three-dimensional modeling method and system based on inclination image - Google Patents
A kind of transmission line of electricity three-dimensional modeling method and system based on inclination image Download PDFInfo
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- CN109978997A CN109978997A CN201910266244.7A CN201910266244A CN109978997A CN 109978997 A CN109978997 A CN 109978997A CN 201910266244 A CN201910266244 A CN 201910266244A CN 109978997 A CN109978997 A CN 109978997A
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- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims description 30
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Abstract
The invention discloses a kind of transmission line of electricity three-dimensional modeling method and system based on inclination image, this method includes the inclination image and POS information for obtaining unmanned plane in mapping scanning process;According to the inclination image, three-dimensional map model is constructed;Detection identification is carried out to the shaft tower in the inclination image, and according to the POS information, the shaft tower identified is matched with the Tower Model in shaft tower account system;The Tower Model that matching returns is implanted into the corresponding position in the three-dimensional map model, generates the threedimensional model of transmission line of electricity.A kind of transmission line of electricity three-dimensional modeling method and system based on inclination image provided by the invention, the foundation of electric transmission line three-dimensional model is realized by synthetic method after relief model and Tower Model classification processing, the reusability for improving Tower Model reduces flight complexity, mapping and modeling work amount;Meanwhile solving the problems, such as the big existing deformation of multi-view images inclination image, shade and blocking, improve quality of match.
Description
Technical field
The present embodiments relate to dimensional Modeling Technology field more particularly to a kind of transmission lines of electricity three based on inclination image
Tie up modeling method and system.
Background technique
Currently, unmanned plane is widely used in line channel modeling and power-line patrolling.Line channel modeling
Oblique photograph technology is mainly utilized, image is acquired from different angles such as forward sight, backsight, left view, right view, lower views, is various three-dimensionals
The foundation of model provides inclination image data and POS data;Power-line patrolling mainly utilize image processing techniques realize target detection,
It is horizontal to improve polling transmission line wisdomization for fault identification, fault location etc..
Wherein, the three-dimensional modeling of transmission line of electricity includes that line channel terrain modeling and transmission tower model, in the prior art
Line channel mapping models landform and shaft tower using inclination image technology, and it is changeable that there are flying heights, modeling work amount
Greatly, the problems such as same shaft tower specification model cannot be multiplexed;In addition, multi-view images tilt image there is also deformation is big, shade and
The problem of blocking, non-significant area intensive quality of match be not high.
Summary of the invention
The present invention provides a kind of transmission line of electricity three-dimensional modeling method and system based on inclination image, to solve the prior art
Deficiency.
To achieve the above object, the present invention provides technical solution below:
In a first aspect, the present invention provides a kind of transmission line of electricity three-dimensional modeling method based on inclination image, the method packet
It includes:
Obtain inclination image and POS information of the unmanned plane in mapping scanning process;
According to the inclination image, three-dimensional map model is constructed;
Detection identification carried out to the shaft tower in the inclination image, and according to the POS information, to the shaft tower identified with
Tower Model in shaft tower account system is matched;
The Tower Model that matching returns is implanted into the corresponding position in the three-dimensional map model, generates the three of transmission line of electricity
Dimension module.
Further, described according to the inclination image in the method, the step of constructing three-dimensional map model, includes:
The sparse matching of image is tilted using the SIFT of local second moment transformation, using Hessian-Gabor algorithm, from described
Image feature is extracted in inclination image, and by the transformation of window second moment and oval normalized, removes the image feature
The affine variation of neighborhood;
Texture mapping is carried out by way of image joint, Fusion Edges, constructs three-dimensional map model.
Further, in the method, it is described ellipse normalized the step of use following formula:
Wherein, A is the unit for making second-order matrix n diagonalization, orthogonal matrix λ1、λ2For the matrix exgenvalue of second-order matrix n, B
For structural matrix.
Further, the method, further includes:
According to capital construction data, Tower Model is constructed in advance;
The Tower Model built is stored to shaft tower account system.
Further, in the method, the Tower Model is one or more.
Second aspect, the present invention provide a kind of transmission line of electricity 3 d modeling system based on inclination image, comprising:
Data acquisition module, for obtaining inclination image and POS information of the unmanned plane in mapping scanning process;
First model construction module, for constructing three-dimensional map model according to the inclination image;
Model fitting module for carrying out detection identification to the shaft tower in the inclination image, and is believed according to the POS
Breath, the shaft tower identified is matched with the Tower Model in shaft tower account system;
Model synthesis module, the Tower Model for returning to matching are implanted into the correspondence position in the three-dimensional map model
It sets, generates the threedimensional model of transmission line of electricity.
Further, in the system, first model construction module includes:
Feature extraction and processing unit are utilized for tilting the sparse matching of image using the SIFT of local second moment transformation
Hessian-Gabor algorithm extracts image feature from the inclination image, and passes through the transformation of window second moment and oval normalizing
Change processing, removes the affine variation of the image feature neighborhood;
Model construction unit constructs three-dimensional map for carrying out texture mapping by way of image joint, Fusion Edges
Model.
Further, in the system, it is described ellipse normalized the step of use following formula:
Wherein, A is the unit for making second-order matrix n diagonalization, orthogonal matrix λ1、λ2For the matrix exgenvalue of second-order matrix n, B
For structural matrix.
Further, the system, further includes:
Second model construction module, for constructing Tower Model in advance according to capital construction data;
Model memory module, for storing the Tower Model built to shaft tower account system.
Further, in the system, the Tower Model is one or more.
A kind of transmission line of electricity three-dimensional modeling method and system based on inclination image provided in an embodiment of the present invention, passes through ground
Synthetic method realizes the foundation of electric transmission line three-dimensional model after shape model and Tower Model classification processing, improves shaft tower mould
The reusability of type reduces flight complexity, mapping and modeling work amount;Meanwhile it solving multi-view images inclination image and existing
Deformation is big, shade and the problem of block, improve quality of match.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of process for transmission line of electricity three-dimensional modeling method based on inclination image that the embodiment of the present invention one provides
Schematic diagram;
Fig. 2 is a kind of structure of transmission line of electricity 3 d modeling system based on inclination image provided by Embodiment 2 of the present invention
Schematic diagram.
Specific embodiment
In order to completely describe technical solution provided in an embodiment of the present invention, and it is easy to be easily absorbed on a cognitive level by the user, below with reference to
The present invention is described in further detail for drawings and examples.It is understood that specific embodiment described herein is only
For explaining only the invention, rather than limitation of the invention.It also should be noted that for ease of description, in attached drawing only
Show part related to the present invention rather than entire infrastructure.
Embodiment one
Attached drawing 1 is please referred to, a kind of transmission line of electricity three-dimensional modeling based on inclination image provided for the embodiment of the present invention one
The flow diagram of method, this method are suitable for the scene of transmission line of electricity three-dimensional modeling, and this method is by based on the defeated of inclination image
Electric line 3 d modeling system executes, which can be by software and or hardware realization.This method specifically includes following step
It is rapid:
S101, inclination image and POS information of the unmanned plane in mapping scanning process are obtained.
S102, according to the inclination image, construct three-dimensional map model.
Specifically, corresponding image points extracts and its matching uses Scale invariant features transform sift (Scale-invariant
Feature transform) sift feature vector is first generated, sift feature vector is then matched, by image according to object space
Least square method is matched.
Forward sight, backsight, left view, it is right depending on, it is lower exist depending on image data mutually block geometry deformation between image, so by
It contains tie point and connecting line, control point coordinates, combine satellite navigation data (GNSS data, Global Navigation
Satellite System) and inertial navigation data (IMU data, Inertial Measurement Unit) combination synthesis
The bundle block adjustment simultaneous adjustment of five angles of navigation data, resolution error equation carry out sky three and measure.Three measurement of sky can
To use air strips method or independent model, but bundle block adjustment precision is higher.
Dense Stereo Matching tilts the sparse matching of image using the SIFT of local second moment transformation, is calculated using Hessian-Gabor
Son extracts image initial characteristics, and the affine variation of feature neighborhood is removed by the transformation of window second moment and oval normalized,
Increase the feature descriptor affine-invariant features of SIFT, improves quality of match.Then texture is carried out by image joint, Fusion Edges
Mapping constructs three-dimensional map model.
Wherein, the step of oval normalized uses following formula:
Wherein, A is the unit for making second-order matrix n diagonalization, orthogonal matrix λ1、λ2For the matrix exgenvalue of second-order matrix n, B
For structural matrix.
S103, detection identification is carried out to the shaft tower in the inclination image, and according to the POS information, to what is identified
Shaft tower is matched with the Tower Model in shaft tower account system.
It should be noted that shaft tower target detection can be realized in any one visual angle, but determined with downwards angle of visibility, at this time
Latitude and longitude information error it is smaller.
Specifically, positioning and orientation system (POS, Position Orientation System) includes that unmanned plane tilts shadow
Coordinate informations and the various rotation angles of course angle, pitch angle, roll angle such as the position longitude of picture, latitude, flying height.
Unmanned plane channel is surveyed and drawn in scanning process, when image detection recognizes shaft tower target, according to the longitude and latitude of POS information
Etc. data in information inquiry shaft tower account system, find matched shaft tower information, call Tower Model.
Preferably, the method, further includes:
According to capital construction data, Tower Model is constructed in advance;The Tower Model is one or more;
The Tower Model built is stored to shaft tower account system.
It should be noted that when establishing shaft tower account system, being constructed according to capital construction data using method disclosed by the invention
The Tower Model of good Tower Model, same specification can be multiplexed, and line channel mapping mainly surveys and draws landform, only to shaft tower
Method for distinguishing locator latitude and longitude information need to be known using target detection, reduce flight complexity and modeling work amount.
S104, the Tower Model that matching returns is implanted into the corresponding position in the three-dimensional map model, generates power transmission line
The threedimensional model on road.
Specifically, forming collection ground in the three-dimensional map model that Tower Model is built according to latitude coordinates Information Embedding
The transmission of electricity threedimensional model of figure information, shaft tower information.
A kind of transmission line of electricity three-dimensional modeling method based on inclination image provided in an embodiment of the present invention, passes through relief model
The foundation that electric transmission line three-dimensional model is realized with synthetic method after Tower Model classification processing, improves answering for Tower Model
With rate, flight complexity, mapping and modeling work amount are reduced;Meanwhile solving the existing deformation of multi-view images inclination image
Greatly, shade and the problem of block, improves quality of match.
Embodiment two
As shown in Fig. 2, second embodiment of the present invention provides a kind of transmission line of electricity 3 d modeling system based on inclination image, packet
It includes:
Data acquisition module 21, for obtaining inclination image and POS information of the unmanned plane in mapping scanning process;
First model construction module 22, for constructing three-dimensional map model according to the inclination image;
Model fitting module 23 for carrying out detection identification to the shaft tower in the inclination image, and is believed according to the POS
Breath, the shaft tower identified is matched with the Tower Model in shaft tower account system;
Model synthesis module 24, the Tower Model for returning to matching are implanted into the correspondence position in the three-dimensional map model
It sets, generates the threedimensional model of transmission line of electricity.
Preferably, first model construction module includes:
Feature extraction and processing unit are utilized for tilting the sparse matching of image using the SIFT of local second moment transformation
Hessian-Gabor algorithm extracts image feature from the inclination image, and passes through the transformation of window second moment and oval normalizing
Change processing, removes the affine variation of the image feature neighborhood;
Model construction unit constructs three-dimensional map for carrying out texture mapping by way of image joint, Fusion Edges
Model.
Preferably, the step of oval normalized uses following formula:
Wherein, A is the unit for making second-order matrix n diagonalization, orthogonal matrix λ1、λ2For the matrix exgenvalue of second-order matrix n, B
For structural matrix.
Preferably, further includes:
Second model construction module, for constructing Tower Model in advance according to capital construction data;
Model memory module, for storing the Tower Model built to shaft tower account system.
Preferably, the Tower Model is one or more.
A kind of transmission line of electricity 3 d modeling system based on inclination image provided in an embodiment of the present invention, passes through relief model
The foundation that electric transmission line three-dimensional model is realized with synthetic method after Tower Model classification processing, improves answering for Tower Model
With rate, flight complexity, mapping and modeling work amount are reduced;Meanwhile solving the existing deformation of multi-view images inclination image
Greatly, shade and the problem of block, improves quality of match.
Method provided by any embodiment of the invention can be performed in above system, has the corresponding functional module of execution method
And beneficial effect.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features;And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of transmission line of electricity three-dimensional modeling method based on inclination image characterized by comprising
Obtain inclination image and POS information of the unmanned plane in mapping scanning process;
According to the inclination image, three-dimensional map model is constructed;
Detection identification is carried out to the shaft tower in the inclination image, and according to the POS information, to the shaft tower and shaft tower identified
Tower Model in account system is matched;
The Tower Model that matching returns is implanted into the corresponding position in the three-dimensional map model, generates the three-dimensional mould of transmission line of electricity
Type.
2. the method according to claim 1, wherein described according to the inclination image, building dimensionally artwork
The step of type includes:
The sparse matching of image is tilted using the SIFT of local second moment transformation, using Hessian-Gabor algorithm, from the inclination
Image feature is extracted in image, and by the transformation of window second moment and oval normalized, removes the image feature neighborhood
Affine variation;
Texture mapping is carried out by way of image joint, Fusion Edges, constructs three-dimensional map model.
3. according to the method described in claim 2, it is characterized in that, using following public the step of the ellipse normalized
Formula:
Wherein, A is the unit for making second-order matrix n diagonalization, orthogonal matrix λ1、λ2For the matrix exgenvalue of second-order matrix n, B is structure
Make matrix.
4. the method according to claim 1, wherein further include:
According to capital construction data, Tower Model is constructed in advance;
The Tower Model built is stored to shaft tower account system.
5. according to the method described in claim 4, it is characterized in that, the Tower Model is one or more.
6. a kind of transmission line of electricity 3 d modeling system based on inclination image characterized by comprising
Data acquisition module, for obtaining inclination image and POS information of the unmanned plane in mapping scanning process;
First model construction module, for constructing three-dimensional map model according to the inclination image;
Model fitting module, it is right for carrying out detection identification to the shaft tower in the inclination image, and according to the POS information
The shaft tower identified is matched with the Tower Model in shaft tower account system;
Model synthesis module, the Tower Model for returning to matching are implanted into the corresponding position in the three-dimensional map model, raw
At the threedimensional model of transmission line of electricity.
7. system according to claim 6, which is characterized in that first model construction module includes:
Feature extraction and processing unit are utilized for tilting the sparse matching of image using the SIFT of local second moment transformation
Hessian-Gabor algorithm extracts image feature from the inclination image, and passes through the transformation of window second moment and oval normalizing
Change processing, removes the affine variation of the image feature neighborhood;
Model construction unit constructs dimensionally artwork for carrying out texture mapping by way of image joint, Fusion Edges
Type.
8. system according to claim 7, which is characterized in that using following public the step of the ellipse normalized
Formula:
Wherein, A is the unit for making second-order matrix n diagonalization, orthogonal matrix λ1、λ2For the matrix exgenvalue of second-order matrix n, B is structure
Make matrix.
9. system according to claim 6, which is characterized in that further include:
Second model construction module, for constructing Tower Model in advance according to capital construction data;
Model memory module, for storing the Tower Model built to shaft tower account system.
10. system according to claim 9, which is characterized in that the Tower Model is one or more.
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Cited By (4)
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CN113192193A (en) * | 2021-04-23 | 2021-07-30 | 安徽省皖北煤电集团有限责任公司 | High-voltage transmission line corridor three-dimensional reconstruction method based on Cesium three-dimensional earth frame |
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CN114894164A (en) * | 2022-04-08 | 2022-08-12 | 广州南方卫星导航仪器有限公司 | Inclined image matching screening method and system |
CN115147563A (en) * | 2022-07-28 | 2022-10-04 | 江苏省送变电有限公司 | Automatic spanning frame three-dimensional model generation method based on GIM technology |
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CN114894164B (en) * | 2022-04-08 | 2023-08-29 | 广州南方卫星导航仪器有限公司 | Oblique image matching screening method and system |
CN115147563A (en) * | 2022-07-28 | 2022-10-04 | 江苏省送变电有限公司 | Automatic spanning frame three-dimensional model generation method based on GIM technology |
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