CN105868341B - Three-dimensional digital earth platform construction method suitable for hydraulic engineering application - Google Patents
Three-dimensional digital earth platform construction method suitable for hydraulic engineering application Download PDFInfo
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- CN105868341B CN105868341B CN201610183584.XA CN201610183584A CN105868341B CN 105868341 B CN105868341 B CN 105868341B CN 201610183584 A CN201610183584 A CN 201610183584A CN 105868341 B CN105868341 B CN 105868341B
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
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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
- G06T17/05—Geographic models
Abstract
The invention discloses a kind of three-dimensional digital earth platform construction methods suitable for hydraulic engineering application, include the following steps: one, building resource manager, for supporting data resource；Two, digital earth browser is constructed, to realize the rendering to the virtual digit earth；Three, network resource server is constructed, is disposed by network, on the server by basic resource deployment, client passes through web browsing respective resources；Four, water conservancy Scene Editor is constructed, for editing exploitation water conservancy three-dimensional scenic.The invention has the advantages that providing hydraulic engineering editing environment using the means of digital earth technology performance hydraulic engineering, true effect hydraulic engineering can be quickly planned on three-dimensional platform.Landform technology is mixed by high-precision, the superhigh precision landform based on optimization is allowed to show engineering, the design parameter for such as providing channel produces the landform containing corresponding channel, and customized figure layer is superimposed on satellite image, to realize the textures effect of higher precision.
Description
Technical field
The present invention relates to three-dimensional digital earth platform construction methods, more particularly, to three dimensions for being suitable for hydraulic engineering application
Word earth platform construction method.
Background technique
Currently, three-dimension GIS (the i.e. Geographic such as three-dimensional geographic information system such as Google Earth, Skyline
Information System, translator of Chinese are GIS-Geographic Information System) software, it generallys use standard quad-tree structure and realizes over the ground
The management and load of shape, image, and pass through the building of addition threedimensional model realization Complete three-dimensional scene.This technological means is simple
Efficiently, the three-dimensional scenics such as digital city, Digital Campus can quickly be created.However in water conservancy application, to the place of landform
Reason, analytical calculation requirement are very high, and it is poor to carry out expression effect using above-mentioned technological means, such as when creating channel, if with
Model shows channel, and channel separates with landform, to be fused together and require a high expenditure of energy.Present comparative maturity
Three-dimensional digital earth platform, come tissue three-dimensional digital earth data, shows engineering using engineering model using multistage landform image
Atural object, the means that hydraulic engineering atural object is not showed from bottom layer realization, it is difficult to meet hydraulic engineering application demand.
Summary of the invention
It is an object of that present invention to provide a kind of three-dimensional digital earth platform construction methods suitable for hydraulic engineering application.
To achieve the above object, the present invention takes following technical proposals:
Three-dimensional digital earth platform construction method of the present invention suitable for hydraulic engineering application, includes the following steps:
One, resource manager is constructed, for supporting data resource；
The data resource includes: 1, image data, the jpg format of tiff format, tile number comprising latitude coordinates；
2, terrain data, the raw format of tiff format, tile number comprising latitude coordinates；3, threedimensional model；4, vector marks；
In order to meet hydraulic engineering using the demand in terms of the expansibility to landform precision and landform, described ground figurate number
It is stored according to using dimensional topography compression algorithm, the dimensional topography compression algorithm includes:
A, terrain tile is divided: global terrain data being projected according to longitude and latitude, and is divided into the Eastern Hemisphere and the Western Hemisphere two
A root node；Each described root node is divided into 4 × 4 child nodes；
B, calculate deviant: the child node described in each includes 513 × 513 elevational points, calculates each institute first
The deviant for the elevational point stated, the i.e. practical height value of this child node subtract the height value obtained by its father node difference；
C, code storage is carried out to deviant: takes the minimum value and maximum value of the deviant of all elevational points of this child node,
Then the coding of each deviant carries out encoded radio B:B=(h that a byte is calculated with following formula0- hmin/ hmax -
hmin) × 255；
H in formula0For the deviant of elevational point, hminFor the minimum value of the deviant of all elevational points of this child node, hmaxFor
The maximum value of the deviant of all elevational points of this node；
When storage, the minimum value of all elevational points of this node and maximum value are stored first, then according to from a left side to
Right, sequence from top to bottom stores the coding of each elevational point one by one；
D, Huffman encoding compression is carried out to above-mentioned storing data；
Two, digital earth browser is constructed, to realize the rendering to the virtual digit earth；
The digital earth browser is supported cross-platform, it may be assumed that by developing different editions of the browser under different platform,
Share identical data resource format；The data resource format includes Windows, Linux, Mac, Web, Android, IOS；
Three, network resource server is constructed, is disposed by network, on the server by basic resource deployment, client
End passes through web browsing respective resources；Three-dimensional space data library is established, landform, the member of image, vector are stored in the database
Data, the request instruction sent according to client return to corresponding resource, it may be assumed that a, be packaged and comprehensive by image, terrain data
Close management, for being imported and exported, data copy, data update operation；B, using bottom-layer network interface；C, using dedicated number
According to transmission channel and encryption mechanism；
Four, water conservancy Scene Editor is constructed, for editing exploitation water conservancy three-dimensional scenic；
Establish the three-dimension GIS environment of digital management, client by the Scene Editor add wherein threedimensional model,
Vector marks object, or carries out GIS analysis, physically simulated calculation operation；
A, water conservancy terrain editor module is established, engineering landform is edited according to Hydraulic Engineering Design index；The work
Journey landform includes excavation, fill, builds channel；It is formed and the consistent water conservancy work of actual design index by high-precision engineering textures
Journey scene；
B, hydraulic engineering mark editor module is established, realization is labeled hydraulic engineering；The module is to call in mark first
Layer is infused, then can be marked and be required according to hydraulic engineering, local hydraulic engineering is labeled；
C, hydraulic engineering model generation module is established, for generating the regular hydraulic engineering of long range, engineering section；Pass through
Loft Line and engineering design section with elevation quickly generate linear hydraulic engineering, and are switched to by the hydraulic engineering model
Engineering landform constructs hydraulic engineering on the engineering topographic layer；
D, establish water model generation module, for generate different shape in scene can data-driven water model；It adopts
Means are generated with the water body of virtual reality, generate the water models such as channel, river, lake, the reservoir of parametrization.Pass through in performance
Parameter input can dynamic analog water body the water bodys physical feature such as water level, flow velocity, flow direction, color.
The invention has the advantages that providing hydraulic engineering editor's ring using the means of digital earth technology performance hydraulic engineering
Border can quickly plan true effect hydraulic engineering on three-dimensional platform.Landform technology is mixed by high-precision, is allowed based on excellent
The superhigh precision landform of change shows engineering, and the design parameter for such as providing channel produces the landform containing corresponding channel, and
Customized figure layer can be superimposed on satellite image, to realize the textures effect of higher precision, while using virtual reality
Water body expression means realize the analog functuion of true water flow not available for other three-dimension GISs.
Specific embodiment
Three-dimensional digital earth platform construction method of the present invention suitable for hydraulic engineering application, includes the following steps:
One, resource manager is constructed, for supporting data resource；
The data resource includes: 1, image data, the jpg format of tiff format, tile number comprising latitude coordinates；
2, terrain data, the raw format of tiff format, tile number comprising latitude coordinates；3, threedimensional model；4, vector marks；
In order to meet hydraulic engineering using the demand in terms of the expansibility to landform precision and landform, described ground figurate number
It is stored according to using dimensional topography compression algorithm, the dimensional topography compression algorithm includes:
A, terrain tile is divided: global terrain data being projected according to longitude and latitude, and is divided into the Eastern Hemisphere and the Western Hemisphere two
A root node；Each described root node is divided into 4 × 4 child nodes；
B, calculate deviant: the child node described in each includes 513 × 513 elevational points, calculates each institute first
The deviant for the elevational point stated, the i.e. practical height value of this child node subtract the height value obtained by its father node difference；
C, code storage is carried out to deviant: takes the minimum value and maximum value of the deviant of all elevational points of this child node,
Then the coding of each deviant carries out encoded radio B:B=(h that a byte is calculated with following formula0- hmin/ hmax -
hmin) × 255；
H in formula0For the deviant of elevational point, hminFor the minimum value of the deviant of all elevational points of this child node, hmaxFor
The maximum value of the deviant of all elevational points of this node；
When storage, the minimum value of all elevational points of this node and maximum value are stored first, then according to from a left side to
Right, sequence from top to bottom stores the coding of each elevational point one by one；
D, Huffman encoding compression is carried out to above-mentioned storing data；
By above-mentioned dimensional topography compression algorithm, global landform can be made to reach about 0.5 meter of resolution ratio, correspondingly, image
Compression algorithm be suitable for being compressed based on hardware-accelerated DXT format, loading performance can be obviously improved.
Two, digital earth browser is constructed, to realize the rendering to the virtual digit earth；
The digital earth browser is supported cross-platform, it may be assumed that by developing different editions of the browser under different platform,
Share identical data resource format；The data resource format includes Windows, Linux, Mac, Web, Android, IOS；
User can easily control camera lens by keyboard, mouse；
Three, network resource server is constructed, is disposed by network, on the server by basic resource deployment, client
End passes through web browsing respective resources；Three-dimensional space data library is established, landform, the member of image, vector are stored in the database
Data, the request instruction sent according to client return to corresponding resource, it may be assumed that a, be packaged and comprehensive by image, terrain data
Close management, for being imported and exported, data copy, data update operation；B, using bottom-layer network interface；C, using dedicated number
According to transmission channel and encryption mechanism；
Four, water conservancy Scene Editor is constructed, for editing water development three-dimensional scenic；
Establish the three-dimension GIS environment of digital management, client by the Scene Editor add wherein threedimensional model,
Vector marks object, or carries out GIS analysis, physically simulated calculation operation；
A, water conservancy terrain editor module is established, engineering landform is edited according to engineering design index in water；The work
Journey landform includes excavation, fill, builds channel；It is formed and the consistent water conservancy work of actual design index by high-precision engineering textures
Journey scene；
B, hydraulic engineering mark editor module is established, realization is labeled hydraulic engineering；The module is to call in mark first
Layer is infused, then can be marked and be required according to hydraulic engineering, local hydraulic engineering is labeled；
C, hydraulic engineering model generation module is established, for generating the regular hydraulic engineering of long range, engineering section；Pass through
Loft Line and engineering design section with elevation quickly generate linear hydraulic engineering, and are switched to by the hydraulic engineering model
Engineering landform constructs hydraulic engineering on the engineering topographic layer；
D, establish water model generation module, for generate different shape in scene can data-driven water model；It adopts
Means are generated with the water body of virtual reality, generate the water models such as channel, river, lake, the reservoir of parametrization；Pass through in performance
Parameter input can dynamic analog water body the water bodys physical feature such as water level, flow velocity, flow direction, color.
After the completion of scene editor, a document scene is issued as by Web Publishing server, it can be by under different platform
Browser open.
Claims (1)
1. a kind of three-dimensional digital earth platform construction method suitable for hydraulic engineering application, it is characterised in that: include the following steps:
One, resource manager is constructed, for supporting data resource；
The data resource includes: 1, image data, the jpg format of tiff format, tile number comprising latitude coordinates；2,
Graphic data, the raw format of tiff format, tile number comprising latitude coordinates；3, threedimensional model；4, vector marks；
In order to meet hydraulic engineering using the demand in terms of the expansibility to landform precision and landform, the terrain data is adopted
It is stored with dimensional topography compression algorithm, the dimensional topography compression algorithm includes:
A, terrain tile is divided: global terrain data being projected according to longitude and latitude, and is divided into the Eastern Hemisphere and two, the Western Hemisphere root
Node；Each root node is divided into 4 × 4 child nodes；
B, calculate deviant: the child node described in each includes 513 × 513 elevational points, is calculated described in each first
The deviant of elevational point, the i.e. practical height value of this child node subtract the height value obtained by its father node difference；
C, code storage is carried out to deviant: takes the minimum value and maximum value of the deviant of all elevational points of this child node, then often
The coding of one deviant carries out encoded radio B:B=(h0- hmin/ hmax-that a byte is calculated with following formula
Hmin) × 255；
H0 is the deviant of elevational point in formula, and hmin is the minimum value of the deviant of all elevational points of this child node, and hmax is this
The maximum value of the deviant of all elevational points of node；
When storage, the minimum value of all elevational points of this node and maximum value are stored first, then according to from left to right, from
The sequence of top to bottm stores the coding of each elevational point one by one；
D, Huffman encoding compression is carried out to above-mentioned storing data；
Two, digital earth browser is constructed, to realize the rendering to the virtual digit earth；
The digital earth browser is supported cross-platform, it may be assumed that by different editions of the exploitation browser under different platform, shares
Identical data resource format；The data resource format includes Windows, Linux, Mac, Web, Android, IOS；
Three, network resource server is constructed, is disposed by network, on the server by basic resource deployment, client is logical
Cross web browsing respective resources；Three-dimensional space data library is established, landform, the metadata of image, vector are stored in the database,
Corresponding resource is returned according to the request instruction that client is sent, it may be assumed that image, terrain data a, are subjected to packing and integrated pipe
Reason, for being imported and exported, data copy, data update operation；B, using bottom-layer network interface；C, it is passed using exclusive data
Defeated channel and encryption mechanism；
Four, water conservancy Scene Editor is constructed, for editing exploitation water conservancy three-dimensional scenic；
The three-dimension GIS environment of digital management is established, client adds threedimensional model, vector by the Scene Editor wherein
Object is marked, or carries out GIS analysis, physically simulated calculation operation；
A, water conservancy terrain editor module is established, engineering landform is edited according to Hydraulic Engineering Design index；The engineering
Shape includes excavation, fill, builds channel；It is formed and the consistent hydraulic engineering field of actual design index by high-precision engineering textures
Scape；
B, hydraulic engineering mark editor module is established, realization is labeled hydraulic engineering；The module is to call in mark layer first,
Then it can be marked and be required according to hydraulic engineering, local hydraulic engineering is labeled；
C, hydraulic engineering model generation module is established, for generating the regular hydraulic engineering of long range, engineering section；By having
The Loft Line and engineering design section of elevation quickly generate linear hydraulic engineering, and switch to engineering by the hydraulic engineering model
Landform constructs hydraulic engineering on the engineering topographic layer；
D, water model generation module is established, for generating the water model of different shape data-driven in scene；Using virtual
The water body of reality generates means, generates the water model of the channel of parametrization, river, lake, reservoir；It is defeated by parameter in performance
Enter water level, flow velocity, flow direction, the color water body physical feature of dynamic analog water body.
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| CN107341244B (en) * | 2017-07-06 | 2021-03-19 | 深圳市置辰海信科技有限公司 | Submarine cable routing submarine topography dynamic management and comprehensive display method |
| CN107563070A (en) * | 2017-09-07 | 2018-01-09 | 张科 | The three-dimensional design system and three-dimensional design method of farmland water conservancy works |
| CN109492070A (en) * | 2018-11-06 | 2019-03-19 | 深圳航天智慧城市系统技术研究院有限公司 | A kind of city macroscopic view scene three-dimensional visualization plateform system |
| CN110087058A (en) * | 2019-02-28 | 2019-08-02 | 山东开创云软件有限公司 | A kind of water utilities information display system and equipment, medium based on cloud platform |
| CN110689616B (en) * | 2019-10-23 | 2022-09-20 | 黄河勘测规划设计研究院有限公司 | Water delivery channel parametric modeling method based on three-dimensional digital earth |
| CN110738735B (en) * | 2019-10-23 | 2023-11-07 | 黄河勘测规划设计研究院有限公司 | Method for improving display effect of three-dimensional digital earth platform |
| CN110929320B (en) * | 2019-11-04 | 2022-11-29 | 长江航道规划设计研究院 | Method for calculating construction amount of channel dredging engineering based on Skyline software |
| CN112985319B (en) * | 2019-12-17 | 2023-12-29 | 中国人民解放军军事科学院战争研究院 | Method, device and storage medium for detecting accuracy of three-dimensional digital earth model |
| CN113011773A (en) * | 2021-04-02 | 2021-06-22 | 云河(河南)信息科技有限公司 | Universal BIM display platform construction method suitable for hydraulic engineering industry |
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| CN103679813A (en) * | 2013-12-18 | 2014-03-26 | 深圳先进技术研究院 | Construction method for three-dimensional digital globe and three-dimensional digital globe system |
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Address after: 450003 Zhengzhou Jinshui Road, Henan, No. 109 Patentee after: Yellow River Survey Planning and Design Research Institute Co., Ltd. Address before: 450003 Zhengzhou Jinshui Road, Henan, No. 109 Patentee before: Yellow River Engineering Consulting Co., Ltd. |
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Effective date of registration: 20210305 Address after: 450003 No. 109 Jinshui Road, Jinshui District, Henan, Zhengzhou Patentee after: YELLOW RIVER ENGINEERING CONSULTING Co.,Ltd. Patentee after: Yunhe (Henan) Information Technology Co.,Ltd. Address before: 450003 No. 109 Jinshui Road, Henan, Zhengzhou Patentee before: YELLOW RIVER ENGINEERING CONSULTING Co.,Ltd. |