CN107220302A - Auto slice storage system and method based on QT technologies - Google Patents
Auto slice storage system and method based on QT technologies Download PDFInfo
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Abstract
The present invention relates to a kind of method and system of the auto slice storage based on QT technologies, map datum is cut into slices by QT technologies and algorithm using pyramid model, comprised the following steps：(1) importing of map datum；(2) parameter setting；(3) map is cut into slices；(4) section index list is set up；(5) section storage.Map datum is imported by graphical treatment software by QT technologies, according to the technology and algorithm of setting, realizes that map datum auto slice is handled, and index list is set up to the map datum after slicing treatment, while realizing the automatic storage of map slice of data；Auto slice storage system based on QT technologies includes central processing system, data-interface, data memory module, data import modul and data processing module；Data interface module, data memory module, data import modul and data processing module communicate to connect with central processing system and form bi-directional data and connect respectively.
Description
Technical field
The present invention relates to electronic map technique field, more particularly to a kind of auto slice storage storage system based on QT technologies
System and method.
Background technology
Microtomy be in order to meet more users, the geospatial information resource sharing service efficiency of high concurrent the need for
Arise at the historic moment, its purpose is to " improve electronic map response efficiency, mitigate server load and network transmission burden ".Ground
Figure microtomy, by being rendered, being cut into slices to map datum, is stored in map using the general map of people as map background
Server end, according to user provide it is different require, corresponding map tile is sent to client, reduce spatial database and
Magnetic disc access times, can effective server-less pressure, reduce network load and network delay.At present, microtomy has been
It is widely used in electronic map website and geography information common platform.
The domestic map microtomy used mainly has following several at present：
(1) client microtomy：The original map that only need to once ask to obtain is decomposed into multiple request in client,
This map section that repeatedly request is obtained is combined by client, the complete map of a width, but this storage mode is formed
It is larger to the load of server and network；
(2) server end microtomy：The map tile of pyramid is cut on the server in advance, according to client's
It is required that, accessed by client.Which is not related to parsing and the map generating process of server, but a storage image
Loading procedure, thus speed.
Chinese patent literature (Application No. 201110088802.9) discloses a kind of method of slicing oversized map,
Mainly include the following steps that：Using ext, js code libraries write out java pictures section program；The oversize map is entered
Row piecemeal；Corresponding segment numbering is carried out to each piecemeal by java script dynamic calls；Cut out respectively it is described it is each
The picture of the piecemeal for the number of finishing.This method is programmed by JAVA, although improved in slice efficiency, but practice
Program is complicated and easily malfunctions.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of section accurately, and slice efficiency is high, fireballing to be based on QT skills
The method of the auto slice storage of art.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：The auto slice based on QT technologies is deposited
The method of storage, is cut into slices to map datum by QT technologies and algorithm using pyramid model, comprised the following steps：
(1) importing of map datum：During the map datum obtained from outside is imported into PaintShop, and to map
The data source of data is checked；
(2) parameter setting：Statistical analysis is carried out according to user's request to different map slice of datas, determines that map is cut into slices
Systematic parameter, and these parameter settings are cut into slices into PaintShop further according to user's request to map datum
Processing；
(3) map is cut into slices：Map datum is cut into slices by calculating, it is first determined the scope and map number of map section
According to the number of levels for needing to scale, the map bottom the most pyramidal that level of zoom is minimum, map scale is maximum, and it is right
It carries out piecemeal with map, and since the upper left corner of map picture, from left to right, from top to bottom map datum is cut, point
The grating image of formed objects is cut into, the 0th layer of section matrix is formed, on the basis of the 0th layer of map picture, according to every 2*2 pictures
The method that the method for element synthesizes a pixel generates the 1st layer of map picture, and piecemeal, segmentation are carried out to the 1st layer of map picture
Into the grating image with last layer formed objects, remaining other layer of map section is generated after the same method, and section is completed
Afterwards, map slice of data is exported；
(4) section index list is set up：Index list is set up for sliced good map datum, derived map is cut
Sheet data sets up directory index in the way of the rank, line number, row number of map slice of data for slice of data；
(5) section storage：The store path of the slice of data set according to user, the map datum cut into slices is carried out certainly
Dynamicization is stored, and is that browsing for later stage electronic map provides data supporting service.Using above-mentioned technical proposal, by QT technologies by ground
Diagram data imports graphical treatment software, according to the technology and algorithm of setting, realizes that map datum auto slice is handled, and to cutting
Map datum after piece processing sets up index list, is later stage electronic map while realizing the automatic storage of map slice of data
Browse offer data supporting service；Wherein due to image pyramid structure, upper layer images are reduced by lower image to be generated, so
After upper layer images correspondence lower image completes transmission, you can generate upper layer images according to lower image.
The present invention further improvement is that, the flow of algorithm of map section comprises the following steps：
1) map datum for needing to load is loaded into PaintShop, map datum is read out；
2) user carries out personal settings to the slicing parameter of map datum according to their needs；
3) when the rank of section is less than the slice level that user is set, into the circulation of next step；
4) according to the size of each rank section of the level calculation cut into slices at present, into next step circulation；
5) when the row coordinate of current slice is less than the maximum of row coordinate, into next step circulation；
6) the row coordinate of current slice, which is less than row coordinate maximum, is, into next step circulation；
7) line number of data, row number and slice number carry out map section according to the map；
8) at the end of cycling condition, end loop, the map section form that map slice of data is set according to user
Export, if cycling condition is not over, is circulated according to the order of row circulation, row circulation and rank circulation, until circulation
Terminate, map slice of data is exported.
The present invention further improvement is that, the personal settings of slicing parameter include section scope, form, rank and storage
Path.
The present invention further improvement is that, by QT technologies using C Plus Plus write out map datum section program.
The technical problem of the invention also to be solved is to provide a kind of section accurately, and slice efficiency is high, fireballing to be based on QT
The auto slice storage system of technology.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：The auto slice based on QT technologies is deposited
Storage system includes central processing system, data-interface, data memory module, data import modul and data processing module；It is described
Data interface module, data memory module, data import modul and data processing module are logical with the central processing system respectively
Letter connection and formation bi-directional data connection；The data import modul is used for the importing of charge map data, using the rule of standard
Model supports the importing of the map slice of data of a variety of data formats；The data memory module is used to realize map slice of data
Automated storing；The data processing module is used to realize automatically switch processing and slice of data directory management work(to map datum
Energy；The data interface module uses standard communication protocol specification, realizes and carries out data pair with application system or third party system
Connect and exchange.
The present invention further improvement is that, should auto slice storage system based on QT technologies also include problem slicing treatment
Module, described problem slicing treatment module is communicated to connect with the data memory module；For judging the map section after storage
Can data have access to the specific data of map section by directory index, if, then judge that map section is out of question；If not
Can, then judge that map section is problematic, then central processing system is beamed back into map section and the problematic map is cut into slices
Cut again, and with cut again map section replacement problem cut into slices and store again.
Prior art is compared, the invention has the advantages that：
1) map slice of data is stored automatically based on QT technologies, improves section storage efficiency；
2) needed to carry out map datum the personalized customization of slice level and form according to client, met customer need；
3) index list is set up for map slice of data, facilitates browsing and inquiring about for client, improve map response speed.
Brief description of the drawings
Technical scheme is further described below in conjunction with the accompanying drawings：
Fig. 1 is the data flow figure of the auto slice storage system based on QT technologies of the present invention；
Fig. 2 is the flow chart of the algorithm of the map section of the method for the storage of the auto slice based on QT technologies of the present invention；
Fig. 3 is the structural representation of the embodiment 1 of the auto slice storage system based on QT technologies of the present invention；
Fig. 4 is the structural representation of the embodiment 2 of the auto slice storage system based on QT technologies of the present invention.
Embodiment
In order to deepen the understanding of the present invention, the present invention is done below in conjunction with drawings and examples and further retouched in detail
State, the embodiment is only used for explaining the present invention, protection scope of the present invention is not constituted and limited.
Embodiment 1：The method of the auto slice storage based on QT technologies, QT technologies and calculation are passed through using pyramid model
Method is cut into slices to map datum, is comprised the following steps：
(1) importing of map datum：During the map datum obtained from outside is imported into PaintShop, and to map
The data source of data is checked；
(2) parameter setting：Statistical analysis is carried out according to user's request to different map slice of datas, determines that map is cut into slices
Systematic parameter, and these parameter settings are cut into slices into PaintShop further according to user's request to map datum
Processing；
(3) map is cut into slices：Determining the scope and map datum of map section first needs the number of levels scaled, scaling
The map bottom the most pyramidal that rank is minimum, map scale is maximum, and it carries out piecemeal to map, from map picture
The upper left corner starts, and from left to right, from top to bottom map datum is cut, and is divided into the grating image of formed objects, is formed
0th layer of section matrix, on the basis of the 0th layer of map picture, the method for synthesizing a pixel according to the method for every 2*2 pixels
The 1st layer of map picture is generated, and piecemeal is carried out to the 1st layer of map picture, the grating image with last layer formed objects is divided into,
Remaining other layer of map section is generated after the same method, and after the completion of section, map slice of data is exported；Wherein due to
Image pyramid structure, upper layer images are reduced by lower image to be generated, so completing transmission in upper layer images correspondence lower image
Afterwards, you can upper layer images are generated according to lower image；
(4) section index list is set up：Index list is set up for sliced good map datum, derived map is cut
Sheet data sets up directory index in the way of the rank, line number, row number of map slice of data for slice of data；
(5) section storage：The store path of the slice of data set according to user, the map datum cut into slices is carried out certainly
Dynamicization is stored, and is that browsing for later stage electronic map provides data supporting service；Wherein map section algorithm flow include with
Lower step：
1) map datum for needing to load is loaded into PaintShop, map datum is read out；
2) user carries out personal settings to the slicing parameter of map datum according to their needs；
3) when the rank of section is less than the slice level that user is set, into the circulation of next step；
4) according to the size of each rank section of the level calculation cut into slices at present, into next step circulation；
5) when the row coordinate of current slice is less than the maximum of row coordinate, into next step circulation；
6) the row coordinate of current slice, which is less than row coordinate maximum, is, into next step circulation；
7) line number of data, row number and slice number carry out map section according to the map；
8) at the end of cycling condition, end loop, the map section form that map slice of data is set according to user
Export, if cycling condition is not over, is circulated according to the order of row circulation, row circulation and rank circulation, until circulation
Terminate, map slice of data is exported；Map datum is imported by PaintShop, and the base attribute of map datum is believed
Breath carries out digital independent, according to client's needs, it is determined that need the scope of map and the quantity circle of section cut into slices, according to setting
Fixed algorithm and rule realizes the slicing treatment of map, and sets up index list to the geographic picture after slicing treatment, to map
Section is stored automatically；Map datum is imported by graphical treatment software by QT technologies, according to the technology and algorithm of setting,
Realize that map datum auto slice is handled, and index list is set up to the map datum after slicing treatment, while realizing that map is cut
The automatic storage of sheet data, is that browsing for later stage electronic map provides data supporting service；The personal settings bag of slicing parameter
Include section scope, form, rank and store path；Map datum section program is write out using C Plus Plus by QT technologies.
Embodiment 2：The auto slice storage system based on QT technologies includes central processing system, data-interface, data
Memory module, data import modul and data processing module；The data interface module, data memory module, data import mould
Block and data processing module communicate to connect with the central processing system and form bi-directional data and connect respectively；The data are imported
Module is used for the importing of charge map data, supports using the specification of standard the map slice of data of a variety of data formats to lead
Enter；The data memory module is used for the automated storing for realizing map slice of data；The data processing module is used for over the ground
Diagram data realizes automatically switch processing and slice of data directory management function；The data interface module uses standard communication protocol
Specification, realizes and carries out data docking with application system or third party system and exchange；Wherein data memory module is right by distribution
As storage system composition, using expansible system architecture, storage load is shared using many storage servers, is taken using position
Business device positioning storage information, not only increases the reliability, availability and access efficiency of system, is also easy to extension；According to available
Property, concurrent and persistent request, object storage system is configured, automatic multi redundancy backup is to child node is stored, to reach items
Index；Distributed objects storage system can be the Open Stack Swift increased income, Ali's cloud OSS, Azure of public cloud
Blob、AWS S3。
Embodiment 3：Difference with embodiment 2 is, is somebody's turn to do the auto slice storage system based on QT technologies in embodiment 2
On the basis of also include problem slicing treatment module and browsing module, described problem slicing treatment module and the data memory module
Communication connection；For judging that can the map slice of data after storage have access to the specific number of map section by directory index
According to, if, then judge that map section is out of question；Such as can not, then judge the map section it is problematic, then by the map cut into slices send out
Return central processing system to cut problematic map section again, and cut into slices and again with map replacement problem of cutting into slices is cut again
Storage；Offering question slicing treatment module can ensure the quality of map section, make map section more accurate, while saving
Human resources；The browsing module is connected with data memory module, for obtaining and showing sectioning image.
For the ordinary skill in the art, simply the present invention is exemplarily described for specific embodiment,
The obvious present invention, which is implemented, to be not subject to the restrictions described above, and is entered as long as employing the inventive concept and technical scheme of the present invention
The improvement of capable various unsubstantialities, or it is not improved by the present invention design and technical scheme directly apply to other occasions
, within protection scope of the present invention.
Claims (6)
1. a kind of method of the auto slice storage based on QT technologies, it is characterised in that QT technologies are passed through using pyramid model
Map datum is cut into slices with algorithm, comprised the following steps：
(1) importing of map datum：During the map datum obtained from outside is imported into PaintShop, and to map datum
Data source checked；
(2) parameter setting：Statistical analysis is carried out according to user's request to different map slice of datas, determine map section is
System parameter, and by these parameter settings into PaintShop, slicing treatment is carried out to map datum further according to user's request；
(3) map is cut into slices：Map datum is cut into slices by calculating, it is first determined the scope and map datum of map section are needed
The number of levels to be scaled, the map bottom the most pyramidal that level of zoom is minimum, map scale is maximum, and to map
It carries out piecemeal, and since the upper left corner of map picture, from left to right, from top to bottom map datum is cut, is divided into
The grating image of formed objects, forms the 0th layer of section matrix, on the basis of the 0th layer of map picture, according to every 2*2 pixels
The method that method synthesizes a pixel generates the 1st layer of map picture, and carries out piecemeal to the 1st layer of map picture, be divided into
The grating image of last layer formed objects, generates remaining other layer of map section after the same method, will after the completion of section
Map slice of data is exported；
(4) section index list is set up：Index list is set up for sliced good map datum, by derived map number of slices
According in the way of the rank, line number, row number of map slice of data directory index is set up for slice of data；
(5) section storage：The store path of the slice of data set according to user, the map datum cut into slices is automated
Storage, is that browsing for later stage electronic map provides data supporting service.
2. the method for the auto slice storage according to claim 1 based on QT technologies, it is characterised in that map section
The flow of algorithm comprises the following steps：
1) map datum for needing to load is loaded into PaintShop, map datum is read out；
2) user carries out personal settings to the slicing parameter of map datum according to their needs；
3) when the rank of section is less than the slice level that user is set, into the circulation of next step；
4) according to the size of each rank section of the level calculation cut into slices at present, into next step circulation；
5) when the row coordinate of current slice is less than the maximum of row coordinate, into next step circulation；
6) the row coordinate of current slice, which is less than row coordinate maximum, is, into next step circulation；
7) line number of data, row number and slice number carry out map section according to the map；
8) at the end of cycling condition, end loop, the map section form export that map slice of data is set according to user,
If cycling condition is not over, circulated according to the order of row circulation, row circulation and rank circulation, until circulation terminates,
Map slice of data is exported.
3. the method for the auto slice storage according to claim 2 based on QT technologies, it is characterised in that slicing parameter
Personal settings include section scope, form, rank and store path.
4. the method for the auto slice storage according to claim 3 based on QT technologies, it is characterised in that pass through QT technologies
Map datum section program is write out using C Plus Plus.
5. a kind of auto slice storage system based on QT technologies, it is characterised in that the auto slice storage system based on QT technologies
System includes central processing system, data-interface, data memory module, data import modul and data processing module；The data
Interface module, data memory module, data import modul and data processing module respectively with the central processing system communication link
Connect and form bi-directional data connection；The data import modul is used for the importing of charge map data, using the specification branch of standard
Hold the importing of the map slice of data of a variety of data formats；The data memory module is used to realize the automatic of map slice of data
Change storage；The data processing module is used to realize automatically switch processing and slice of data directory management function to map datum；
The data interface module use standard communication protocol specification, realize with application system or third party system progress data dock and
Exchange.
6. the auto slice storage system according to claim 5 based on QT technologies, it is characterised in that QT technologies should be based on
Auto slice storage system also include problem slicing treatment module, described problem slicing treatment module and the data storage mould
Block is communicated to connect；For judging that can the map slice of data after storage have access to the specific number of map section by directory index
According to, if, then judge that map section is out of question；Such as can not, then judge the map section it is problematic, then by the map cut into slices send out
Return central processing system to cut problematic map section again, and cut into slices and again with map replacement problem of cutting into slices is cut again
Storage.
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