CN108595455A - A kind of spatial data coordinate transformation method and device - Google Patents
A kind of spatial data coordinate transformation method and device Download PDFInfo
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- CN108595455A CN108595455A CN201711460606.3A CN201711460606A CN108595455A CN 108595455 A CN108595455 A CN 108595455A CN 201711460606 A CN201711460606 A CN 201711460606A CN 108595455 A CN108595455 A CN 108595455A
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- coordinate transformation
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Abstract
A kind of spatial data coordinate transformation method of present invention offer and device belong to spatial data coordinate conversion calculating field.The method includes：When receiving the terminal user request for carrying spatial data, coordinate Transformation Service is sent instructions to；It is communicated between coordinate Transformation Service, determines idle coordinate Transformation Service；Obtain the coordinate Transformation Service component of idle coordinate Transformation Service corresponding free time；Idle coordinate Transformation Service component reads spatial data parallel, and carries out Parallel transformation to spatial data, is rendered to parallel computation result.Scheme carries out coordinate conversion by way of service and parallel computation to spatial data, and carrying out acquisition, parallel computation and rendering parallel to spatial data by coordinate Transformation Service component is handled, and improves the speed of Conversion of Spatial Data.
Description
Technical field
The present invention relates to spatial data coordinates to convert calculating field, and in particular to a kind of spatial data coordinate transformation method and
Device.
Background technology
Spatial data coordinate conversion at present only realizes the conversion of single-point coordinate, the conversion of files in batch coordinate mostly, and user is only
It can be operated by standalone version application program.Since coordinate converts safety to data, control point and conversion parameter it is exhausted
The coordinate conversion of demand to confidentiality and user to high-volume data conversion, conventional individual version can no longer meet these
It is required that.
Its data volume of spatial data itself is just very big, is to want to the performance of conversion when carrying out the conversion of spatial data coordinate
It asks, data IO is to read, conversion, integrated change be written in traditional spatial data coordinate transform process, is caused to user's
Hardware device needs the hard disk of high read-write；And when doing data conversion every time, a kind of data source types are only had access, cannot be satisfied
Multiple and different data sources are carried out at the same time data conversion；After data conversion, transformed file is directly exported, it can not direct wash with watercolours
Dye display, can not facilitate the otherness of comparison source data and target data, can not facilitate and carry out data inspection.
Invention content
An embodiment of the present invention provides a kind of spatial data coordinate transformation method and devices, are carried out using parallel shared service
Data coordinates are converted, and different data sources, different switching model and different coordinate systems data may be implemented and be carried out at the same time space seat
Mark conversion, to reach the high efficiency of Conversion of Spatial Data.
Wherein, a kind of spatial data coordinate transformation method of the invention, the method includes：
When receiving the terminal user request for carrying spatial data, coordinate Transformation Service is sent instructions to；
It is communicated between the coordinate Transformation Service, determines idle coordinate Transformation Service；
Obtain the coordinate Transformation Service component of the coordinate Transformation Service corresponding free time of the free time；
The coordinate Transformation Service component of the free time reads the spatial data parallel, and is carried out simultaneously to the spatial data
Row conversion, renders parallel computation result.
The embodiment of the present invention additionally provides a kind of spatial data coordinate transformation device, and described device includes receiving module, really
Cover half block, acquisition module and conversion module；
The receiving module, the terminal user request for carrying spatial data for receiving user's transmission, and
When receiving the terminal user request, coordinate Transformation Service is sent instructions to；
The determining module, for by being communicated between the coordinate Transformation Service, determining idle coordinate conversion
Service；
The acquisition module, the corresponding sky of coordinate Transformation Service for obtaining the free time that the determining module determines
Not busy coordinate Transformation Service component；
The conversion module includes parallel reading unit, parallel computation unit and rendering unit, the reading unit, by institute
It states idle coordinate Transformation Service component and reads the spatial data parallel；The parallel computation unit is to the parallel reading list
The spatial data that member is read carries out Parallel transformation, the parallel computation that the rendering unit obtains the parallel computation unit
As a result it is rendered.
It has the beneficial effect that：
Scheme provided by the invention carries out coordinate conversion, by sitting by way of service and parallel computation to spatial data
It marks Transformation Service component and acquisition parallel, parallel computation and rendering processing is carried out to spatial data, improve the speed of Conversion of Spatial Data
Control point and conversion parameter are packaged hiding and by way of service by degree, provide Parallel transformation service interface, support
Access different types of data source carries out data conversion parallel simultaneously.The rendering function that scheme provides, can be by data conversion and number
According to render it is synchronous carry out, be compared with transformed target data convenient for source data and data inspection.
Description of the drawings
Specific embodiments of the present invention are described below with reference to accompanying drawings, wherein：
Fig. 1 shows one spatial data coordinate transformation method flow chart of the embodiment of the present invention；
Fig. 2 shows another flow charts of one spatial data coordinate transformation method of the embodiment of the present invention；
Fig. 3 shows the structural schematic diagram of one spatial data Transformation Service platform of the embodiment of the present invention；
Fig. 4 shows two spatial data coordinate transformation device structural schematic diagram of the embodiment of the present invention.
Specific implementation mode
In order to make technical scheme of the present invention and advantage be more clearly understood, below in conjunction with attached drawing to the exemplary of the present invention
Embodiment is described in more detail, it is clear that and the described embodiments are merely a part of the embodiments of the present invention, rather than
The exhaustion of all embodiments.And in the absence of conflict, the feature in the embodiment and embodiment in this explanation can be mutual
It is combined.
Embodiment one
Fig. 1 shows a kind of spatial data coordinate transformation method provided in an embodiment of the present invention, the method includes：
Step 101：When receiving the terminal user request for carrying spatial data, coordinate conversion clothes are sent instructions to
Business；
Step 102：It is communicated between coordinate Transformation Service, determines idle coordinate Transformation Service；
Step 103：Obtain the coordinate Transformation Service component of idle coordinate Transformation Service corresponding free time；
Step 104：Idle coordinate Transformation Service component reads spatial data parallel, and is turned parallel to spatial data
It changes, parallel computation result is rendered.
Below according to practical application scene a kind of specific spatial data coordinate transformation method is proposed referring to Fig. 2 and Fig. 3,
This programme is by the idle coordinate Transformation Service of service chaining selection, in the coordinate conversion of idle coordinate Transformation Service corresponding free time
Data conversion is carried out on component parallel.
Step 201：Receive the terminal user request that user sends；
Wherein, spatial data is at least carried in terminal user request, active coordinate system, target can also be carried
Coordinate system and transformation model, and then spatial data can be converted, and source coordinate system, target-based coordinate system are combined, it will be described
Conversion of Spatial Data is coordinate to be converted, and coordinate to be converted is converted according to transformation model.
Step 202：Simulation spatial service conversion platform sends instructions to coordinate Transformation Service；
Wherein, entire transfer process is made Conversion of Spatial Data service, Conversion of Spatial Data service by the embodiment of the present invention
Platform deployment has multiple servers, and there are one space coordinate conversion service and a space coordinate conversions for deployment on each server
Serviced component.
Step 203：It is communicated between coordinate Transformation Service, determines idle coordinate Transformation Service；
Wherein, the coordinate Transformation Service on different server mutually communicates, and judges the coordinate conversion clothes in entire service chaining
Business is idle state or busy condition, and user is given to distribute idle coordinate transition components, and scheme is in service chaining by judging
It is no to there is idle coordinate Transformation Service, determine idle coordinate Transformation Service.
In practical application, which can in advance be analyzed, determined before receiving terminal user request
Idle coordinate Transformation Service, when receiving the terminal user request of user's transmission, by idle coordinate Transformation Service
It works, it can also be after receiving terminal user request, then analyzed, determine idle coordinate conversion clothes
Business.The present invention is not specifically limited this.
Step 204：Obtain the coordinate Transformation Service component of idle coordinate Transformation Service corresponding free time；
Because there are one space coordinate conversion service and a space coordinate conversion serviced components for deployment on server, above-mentioned
When step 203 determines idle coordinate Transformation Service, the coordinate of the coordinate Transformation Service of the free time corresponding free time is determined
Transformation Service component.
Step 205：Idle coordinate Transformation Service component reads spatial data parallel；
In the step, the effect of coordinate transition components is to carry out Parallel transformation to spatial data, and each assembly function is divided into
Three layers, the first layer data IO is read parallel, second layer data conversion parallel computation, third layer data result parallel rendering.
First layer data IO is read parallel, for example, a 1G file, we according to 10M sizes carry out decile, while I
Can hold multiple threads the file of decile is read out, this process is exactly the parallel reading of data IO.
The second layer：Data conversion parallel computation, it is assumed that the file of each decile includes 10,000 points, we are according to 1000
A point, which is one group, to be converted, this process is exactly data conversion parallel computation.
Third layer：It data result and renders, often converts one group of point, we can equally hold multiple threads, will convert
Point shown and checked, this process be exactly data show parallel rendering.
As it can be seen that for coordinate Transformation Service component, provide three layer functions, i.e., parallel reading, parallel computation and rendering,
The step first describes its parallel read functions.
Idle coordinate Transformation Service component is according to the size of spatial data, and determination etc. divides unit, according to the decile list
Member reads spatial data parallel.
Step 206：Idle coordinate Transformation Service component carries out Parallel transformation to spatial data；
Specifically, also carrying active coordinate system, target-based coordinate system and transformation model in terminal user request；
The control point that idle coordinate Transformation Service Assembly calculation spatial data needs；According to spatial data, source coordinate system
Coordinate to be converted is determined with target-based coordinate system, coordinate to be converted is deployed on different control points；Dominating pair of vertices seat to be converted
Mark carries out Parallel transformation, realizes coordinate conversion.
Step 207：Idle coordinate Transformation Service component renders parallel computation result；
In the step, parallel computation is obtained as a result, and being rendered to parallel result using multiple threads.
Scheme provided by the invention, by Conversion of Spatial Data service and Conversion of Spatial Data deployment of components in different server
Upper realization distributed deployment；Coordinate conversion is carried out to spatial data by way of service and parallel computation, is converted and is taken by coordinate
Being engaged in, component obtains spatial data progress parallel, parallel computation and rendering are handled, and improves the speed of Conversion of Spatial Data, and pass through
The mode of service, control point and conversion parameter is packaged hiding, is provided Parallel transformation service interface, is supported to access simultaneously not
Same type data source carries out data conversion parallel.The rendering function that scheme provides, can be synchronous with data render by data conversion
It carries out, is compared with transformed target data convenient for source data and data inspection.
Embodiment two
Based on same inventive concept, a kind of spatial data coordinate transformation device is present embodiments provided, which sits
The principle that mark conversion equipment solves the problems, such as is similar to a kind of spatial data coordinate transformation method, therefore the spatial data coordinate is converted
Device implementation may refer to a kind of implementation of spatial data coordinate transformation method, and overlaps will not be repeated.
With reference to Fig. 4, to a kind of spatial data coordinate transformation device provided by the invention, described device includes receiving mould
Block 301, determining module 302, acquisition module 303 and conversion module 304；
Receiving module 301, the terminal user request for carrying spatial data for receiving user's transmission, and connecing
When receiving terminal user request, coordinate Transformation Service is sent instructions to；
Determining module 302 is communicated between coordinate Transformation Service for passing through, determines idle coordinate Transformation Service；
Acquisition module 303, the seat of the idle coordinate Transformation Service corresponding free time for obtaining the determination of determining module 302
Mark Transformation Service component；
Conversion module 304 includes parallel reading unit, parallel computation unit and rendering unit, the reading unit, by sky
Not busy coordinate Transformation Service component reads spatial data parallel；The spatial data that parallel computation unit reads parallel reading unit
Parallel transformation is carried out, rendering unit renders the parallel computation result that parallel computation unit obtains.
Wherein, for conversion module, parallel reading unit determines decile for the size according to the spatial data
Unit, and according to the equal subdivisions, the spatial data is read parallel.
Wherein, active coordinate system, target-based coordinate system and transformation model are also carried in the terminal user request, it is described
Parallel computation unit includes computation subunit, determination subelement and conversion subunit；
The computation subunit, the control point needed for calculating the spatial data；
The determination subelement, for being determined according to the spatial data, the source coordinate system and the target-based coordinate system
The coordinate to be converted is deployed on different control points by coordinate to be converted；
The conversion subunit realizes coordinate conversion for carrying out Parallel transformation to the coordinate to be converted.
Wherein, the rendering unit, for obtaining parallel computation that the parallel computation unit obtains as a result, and using more
A thread renders the parallel result.
In practical application, it is deployed with coordinate Transformation Service and coordinate transition components on each server in service chaining, it is described
It is mutually communicated between coordinate Transformation Service；Correspondingly, the determining idle coordinate Transformation Service and the coordinate of free time conversion clothes
Business component, specifically includes：
Judge in the service chaining with the presence or absence of idle coordinate Transformation Service；
Determine the coordinate Transformation Service of the free time；
The coordinate that the terminal user is requested assignment to the coordinate Transformation Service corresponding free time of the free time turns
Change component.
The scheme that this programme provides, by Conversion of Spatial Data service and Conversion of Spatial Data deployment of components in different server
Upper realization distributed deployment；Coordinate conversion is carried out to spatial data by way of service and parallel computation, is converted and is taken by coordinate
Being engaged in, component obtains spatial data progress parallel, parallel computation and rendering are handled, and improves the speed of Conversion of Spatial Data, and pass through
The mode of service, control point and conversion parameter is packaged hiding, is provided Parallel transformation service interface, is supported to access simultaneously not
Same type data source carries out data conversion parallel.The rendering function that scheme provides, can be synchronous with data render by data conversion
It carries out, is compared with transformed target data convenient for source data and data inspection.
For convenience of description, each section of apparatus above is divided into various modules with function or unit describes respectively.Certainly,
Each module or the function of unit can be realized in same or multiple softwares or hardware in carrying out the present invention.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Claims (10)
1. a kind of spatial data coordinate transformation method, which is characterized in that the method includes：
When receiving the terminal user request for carrying spatial data, coordinate Transformation Service is sent instructions to；
It is communicated between the coordinate Transformation Service, determines idle coordinate Transformation Service；
Obtain the coordinate Transformation Service component of the coordinate Transformation Service corresponding free time of the free time；
The coordinate Transformation Service component of the free time reads the spatial data parallel, and is turned parallel to the spatial data
It changes, parallel computation result is rendered.
2. the method as described in claim 1, which is characterized in that described in the coordinate Transformation Service component of the free time is read parallel
Spatial data specifically includes：
It is determining etc. to divide unit according to the size of the spatial data；
According to the equal subdivisions, the spatial data is read parallel.
3. method as claimed in claim 2, which is characterized in that also carry active coordinate in the terminal user request
The coordinate Transformation Service component of system, target-based coordinate system and transformation model, the free time carries out Parallel transformation to the spatial data,
It specifically includes：
The control point that spatial data described in the coordinate Transformation Service Assembly calculation of the free time needs；
Coordinate to be converted is determined according to the spatial data, the source coordinate system and the target-based coordinate system, it will be described to be converted
Coordinate is deployed on different control points；
Coordinate progress Parallel transformation to be converted, realizes coordinate conversion described in the dominating pair of vertices.
4. method as claimed in claim 2 or claim 3, which is characterized in that the coordinate Transformation Service component of the free time to counting parallel
It calculates result to be rendered, specifically include：
Parallel computation is obtained as a result, and being rendered to the parallel result using multiple threads.
5. method as claimed in claim 4, which is characterized in that be deployed with coordinate Transformation Service on each server in service chaining
With coordinate transition components, mutually communicate between the coordinate Transformation Service；Correspondingly, the determining idle coordinate Transformation Service
And idle coordinate Transformation Service component, it specifically includes：
Judge in the service chaining with the presence or absence of idle coordinate Transformation Service；
Determine the coordinate Transformation Service of the free time；
The terminal user is requested assignment to the coordinate conversion group of the coordinate Transformation Service corresponding free time of the free time
Part.
6. a kind of spatial data coordinate transformation device, which is characterized in that described device includes receiving module, determining module, acquisition
Module and conversion module；
The receiving module, the terminal user request for carrying spatial data for receiving user's transmission, and receiving
When being asked to the terminal user, coordinate Transformation Service is sent instructions to；
The determining module, for by being communicated between the coordinate Transformation Service, determining idle coordinate Transformation Service；
The acquisition module, the coordinate Transformation Service corresponding free time of the free time for obtaining the determining module determination
Coordinate Transformation Service component；
The conversion module includes parallel reading unit, parallel computation unit and rendering unit, the reading unit, by the sky
Not busy coordinate Transformation Service component reads the spatial data parallel；The parallel computation unit reads the parallel reading unit
The spatial data taken carries out Parallel transformation, the parallel computation result that the rendering unit obtains the parallel computation unit
It is rendered.
7. device as claimed in claim 6, which is characterized in that the parallel reading unit, for according to the spatial data
Size, determine etc. and to divide unit, and according to the equal subdivisions, the spatial data is read parallel.
8. device as claimed in claim 6, which is characterized in that also carry active coordinate in the terminal user request
System, target-based coordinate system and transformation model, the parallel computation unit include that computation subunit, determination subelement and conversion are single
Member；
The computation subunit, the control point needed for calculating the spatial data；
The determination subelement waits turning for being determined according to the spatial data, the source coordinate system and the target-based coordinate system
Coordinate is changed, the coordinate to be converted is deployed on different control points；
The conversion subunit realizes coordinate conversion for carrying out Parallel transformation to the coordinate to be converted.
9. device as claimed in claim 7 or 8, which is characterized in that the rendering unit, for obtaining the parallel computation list
The parallel computation that member obtains is as a result, and render the parallel result using multiple threads.
10. device as claimed in claim 9, which is characterized in that be deployed with coordinate conversion clothes in service chaining on each server
It is engaged in and coordinate transition components, is mutually communicated between the coordinate Transformation Service；Correspondingly, the determining idle coordinate conversion clothes
The coordinate Transformation Service component of business and free time, specifically include：
Judge in the service chaining with the presence or absence of idle coordinate Transformation Service；
Determine the coordinate Transformation Service of the free time；
The terminal user is requested assignment to the coordinate conversion group of the coordinate Transformation Service corresponding free time of the free time
Part.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114399541A (en) * | 2021-12-29 | 2022-04-26 | 北京师范大学 | Regional coordinate conversion method and device |
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| CN103870591A (en) * | 2014-03-28 | 2014-06-18 | 武汉聪源科技有限责任公司 | Method and system for carrying out parallel spatial analysis service based on spatial data |
| CN104052803A (en) * | 2014-06-09 | 2014-09-17 | 国家超级计算深圳中心(深圳云计算中心) | Decentralized distributed rendering method and system |
| CN105160197A (en) * | 2015-09-23 | 2015-12-16 | 湖北省基础地理信息中心 | Comprehensive geographical spatial data coordinate conversion method and system |
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| CN103870591A (en) * | 2014-03-28 | 2014-06-18 | 武汉聪源科技有限责任公司 | Method and system for carrying out parallel spatial analysis service based on spatial data |
| CN104052803A (en) * | 2014-06-09 | 2014-09-17 | 国家超级计算深圳中心(深圳云计算中心) | Decentralized distributed rendering method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114399541A (en) * | 2021-12-29 | 2022-04-26 | 北京师范大学 | Regional coordinate conversion method and device |
| CN114399541B (en) * | 2021-12-29 | 2022-10-21 | 北京师范大学 | Regional coordinate conversion method and device |
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