CN103631804A - Map cutting method and processing system of electronic map - Google Patents
Map cutting method and processing system of electronic map Download PDFInfo
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- CN103631804A CN103631804A CN201210304279.3A CN201210304279A CN103631804A CN 103631804 A CN103631804 A CN 103631804A CN 201210304279 A CN201210304279 A CN 201210304279A CN 103631804 A CN103631804 A CN 103631804A
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- G06—COMPUTING; CALCULATING OR COUNTING
- 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
Abstract
The invention provides a map cutting method and a processing system of an electronic map. The map cutting method is executed by a server and client ends in a cooperative mode and comprises the steps that the server splits an entire map cutting task into a plurality of unit map cutting masks with the appropriate granularity according to a preset splitting strategy; the server distributes the unit map cutting tasks to all the client ends; all the client ends execute the unit map cutting tasks in a parallel mode to obtain map cutting tiles and the meta information of the map cutting tiles; all the client ends store the map cutting tiles to a designated spot; all the client ends send the meta information of the map cutting tiles to the server. According to the map cutting method and the processing system of the electronic map, a distributed map tile generating method is used, hardware resources can be completely used through effective management and equilibrium distribution of the tasks, the map cutting efficiency of the electronic map is effectively improved, the fact that executing of the entire map cutting task is affected due to breakdowns of a single machine can be avoided, and the reliability of map cutting work is improved.
Description
Technical field
The present invention relates to electronic map technique field, especially, what relate to a kind of electronic chart cuts drawing method and disposal system.
Background technology
Cache map, while referring to operations such as carrying out map view, inquiry, editor, analysis in Map Service of Network, carries out Qie Tu and storage in advance to map datum/picture according to specific mode.Because cache map, just direct obtaining information and do not need server to regenerate when user accesses same data/picture afterwards, thus improve the access efficiency of data.Therefore,, for large quantity geography data, cache map technology is a kind of very effective efficiency operation mode.
Yet making cache map cuts figure process itself is also a job very consuming time.Traditional cache map technology, because being limited to the constraint of hardware condition, generally adopts unit to cut the mode of figure, by process of a machine, view picture map is cut into slices.But adopt existing unit to cut figure mode large quantity geography data (as multistage, large scale data covering the whole world) is cut to figure, the time of expending is often some months or even several years, and once machine or process break down, the whole figure of cutting work just can only be made a new start, thereby existing work efficiency of cutting diagram technology is very low.
As can be seen here, in prior art, at least there are the following problems:
1) unit work, in-house other hardware resources can not get application, cause resources idle waste;
2) length consuming time, is limited to the constraint on hardware, and it is long that mass data is cut the figure time, has a strong impact on work efficiency;
3) non-fault is recovered, once cut figure task, breaks down, and can only redeploy, and the work of early investment is only made a new start.
In a word, need the urgent technical matters solving of those skilled in the art to be exactly: how to make full use of in-house hardware resource raising and cut figure efficiency.
Summary of the invention
What technical matters to be solved by this invention was to provide a kind of electronic chart cuts drawing method and disposal system, can complete efficiently the processing to massive map data, and that effectively improves electronic chart cuts figure efficiency.
In order to address the above problem, a kind of drawing method of cutting of electronic chart is provided on the one hand, by server and at least two clients, coordinate and carry out, comprising:
Figure task is cut in the unit that server is split as several suitable particle sizes according to default fractionation strategy by the whole figure of cutting task;
Server is cut figure task by said units and is distributed to each client;
Each client parallel execution unit is cut figure task, and figure tile is cut in acquisition and this cuts the metamessage of figure tile;
Each client sends to server by the metamessage of the above-mentioned figure of cutting tile.
Preferably, above-mentioned steps: server is cut figure task by said units and distributed to each client, is specially: server cuts by said units the client that figure task is distributed to the current free time; Before this step, also comprise:
Server and client communication, know the current state of each client.
Preferably, at above-mentioned each client parallel execution unit, cut figure task, obtain and to cut after figure tile and this cut the metamessage step of figure tile, also comprise: each said units of server record is cut distribution state and the practice condition of figure task.
Preferably, above-mentioned server record unit is cut distribution state and the practice condition of figure task, specifically comprises:
Whether judging unit is cut figure task and is distributed, and is if so, labeled as and distributes; If not, be labeled as unallocated;
Check that unit cuts the implementation progress of figure task, if the serious time delay of tasks carrying is cancelled and being carried out, redistribute to this task of other client executing.
Preferably, after above-mentioned each client sends to server step by the metamessage of the above-mentioned figure of cutting tile, also comprise:
Whether server meets mission requirements according to the above-mentioned figure of the cutting tile of metamessage checking of the above-mentioned figure of cutting tile, and the task that is if so, labeled as completes; If not, be labeled as that task does not complete and the task allocation step of returning is redistributed this unit and cut figure task.
Accordingly, provide a kind of disposal system of electronic chart, having comprised: server and at least two clients; Wherein, above-mentioned server comprises:
Cut figure task and split module, for the unit that the whole figure of cutting task is split as to several suitable particle sizes according to default fractionation strategy, cut figure task;
Cut figure task scheduling modules, for said units is cut to the client that figure task is distributed to the current free time in good time;
Receiver module, for receiving the metamessage of cutting figure task or cutting figure tile.
Memory module, cuts figure task, cuts the metamessage of figure tile or cuts figure tile for storing above-mentioned some unit;
Above-mentioned client comprises:
Cut figure task receiver module, for cutting figure task from above-mentioned server receiving element;
Cut module, for carrying out said units, cut figure task, figure tile is cut in acquisition and this cuts the metamessage of figure tile;
Sending module, for sending the metamessage of the above-mentioned figure of cutting tile.
Preferably, above-mentioned server also comprises: state recording module, for recording unit, cut distribution state and the practice condition of figure task.
Preferably, above-mentioned server also comprises:
Cut figure tile authentication module, for cutting figure tile according to the metamessage checking of the above-mentioned figure of cutting tile, whether meet mission requirements: if so, notify above-mentioned state recording module records unit to cut figure task and complete; If not, notify the above-mentioned figure of cutting task scheduling modules to redistribute this unit and cut figure task.
Preferably, above-mentioned disposal system also comprises: security module, and for ensureing communication security, data transmission security.
Preferably, above-mentioned server also comprises: cut figure task management module, for interpolation, deletion or modification, cut figure task.
Preferably, above-mentioned client also comprises: status report module, and for reporting the work at present state of client itself.
Compared with prior art, a technical scheme in technique scheme has the following advantages:
This programme adopts the unit that the whole figure of cutting task is split as to several suitable particle sizes to cut figure task, and distribute to respectively the distributed maps tile generation method of a plurality of client executed in parallel, equilibrium by effective management and task distributes, take full advantage of in-house hardware resource, that has effectively improved electronic chart cuts figure efficiency.Meanwhile, adopt said method, can previous all working not made a new start because of the fault of a machine, possess fault recovery function, promoted the reliability of cutting figure work.
accompanying drawing explanation
Fig. 1 is the process flow diagram of cutting drawing method embodiment mono-of electronic chart of the present invention;
Fig. 2 is the process flow diagram of cutting drawing method embodiment bis-of electronic chart of the present invention;
Fig. 3 is the process flow diagram of cutting drawing method embodiment tri-of electronic chart of the present invention;
Fig. 4 is the process flow diagram of cutting drawing method embodiment tetra-of electronic chart of the present invention;
Fig. 5 is the schematic diagram of electronic chart disposal system embodiment of the present invention;
Fig. 6 is the structural representation of server example one of the present invention;
Fig. 7 is client implementation example one structural representation of the present invention;
Fig. 8 is the structural representation of server example two of the present invention;
Fig. 9 is the structural representation of server example three of the present invention;
Figure 10 is the structural representation of client implementation example two of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
With reference to Fig. 1, show the process flow diagram of cutting drawing method embodiment mono-of electronic chart of the present invention, this is cut drawing method and coordinates execution by server and at least two clients, comprising:
Figure task is cut in the unit that step 1, server are split as several suitable particle sizes according to default fractionation strategy by the whole figure of cutting task.
Wherein, the fractionation strategy of the above-mentioned figure of cutting task can be the strategy that engineer's scale adds geographic range, can be also other strategy.The unit of suitable particle size was cut figure task and refer to the figure task of cutting that can complete according to the processing power of client within the rationally cycle, for example, the figure task of cutting that can complete in hour or in half an hour, can complete cut figure task dispatching.
Above-mentioned steps 1 has also implied the step that storage unit is cut figure task, because storage is conventional steps, and bright stating no longer herein.
Step 3, server are cut figure task by said units and are distributed to each client.It should be noted that, it can be one that figure task is cut in the unit that server is given a client at every turn, can be also a plurality of herein.
Step 5, each client parallel execution unit are cut figure task, and figure tile is cut in acquisition and this cuts the metamessage of figure tile.
This step 5 has also implied each client and will cut figure tile and be saved to the step of assigned address.
Wherein, cut figure tile and refer to the segment map cutting out from whole map.The metamessage of cutting figure tile comprises: the information such as memory location, rank, engineer's scale, geographic range of cutting figure tile.The memory location of the above-mentioned figure of cutting tile can be client, server end or other specified paths.
Step 7, each client send to server by the metamessage of the above-mentioned figure of cutting tile.
The electronic chart that the embodiment of the present invention provides cut drawing method, adopt distributed maps tile generation technique, by a server and a plurality of client, coordinate, a large complete figure task of cutting is split as to a plurality of unit and cuts figure task, respectively by different client executing, take full advantage of hardware resource, effectively shortened the processing time of mass data, improved and cut figure efficiency.
In addition, as shown in Figure 2, the invention provides the process flow diagram of cutting drawing method embodiment bis-of electronic chart, comprising:
Figure task is cut in the unit that step 11, server are split as several suitable particle sizes according to default fractionation strategy by the whole figure of cutting task.This step is identical with the step 1 of above-described embodiment one.
In this step 13, server knows that the mode of client current state can comprise: active report and passive type report.Wherein, the mode of active report can be: once client is idle, just initiatively current in idle condition to server report.The mode of passive type report is: server sends status report request, reports currently in concrete state after client request again, or server sends status report request, only have current in idle client just to server feedback information.
This step is similar but not identical with the step 3 of above-described embodiment one.The client receiving an assignment in above-mentioned steps 3 is likely just in time in idle condition, and processing unit is cut figure task immediately, also likely in temporary transient busy state, waits for a period of time and could process the unit distributing and cut figure task.In the present embodiment, server only cuts by unit the client that figure task is distributed to the current free time, guarantees that unit cuts figure task and can process immediately.Visible, compare with enforcement one, adopt this method embodiment further to improve and cut figure efficiency.
This step 19 has also implied the step that buffer memory is cut the metamessage of figure tile, and this place is no longer clearly described.The metamessage of cutting figure tile is stored on server.
Electronic chart of the present invention cut drawing method embodiment bis-on the basis of embodiment mono-, server and client real-time Communication for Power have been increased, know the step of client current state, can effectively realize unit and cut the dynamic assignment of figure task and monitoring in real time, further improve and cut figure efficiency.
The process flow diagram of cutting drawing method embodiment tri-with reference to the electronic chart of the present invention shown in Fig. 3 has increased step 18 on basis embodiment illustrated in fig. 2.After above-mentioned steps 17, cut drawing method and also comprise:
This step 18 specifically comprises:
Whether judging unit is cut figure task and is distributed, and is if so, labeled as and distributes; If not, be labeled as unallocated;
Check that unit cuts the implementation progress of figure task, if client executing is cut the serious time delay of figure task, cancel this task in the execution of this client, it is unallocated that figure task is cut in this unit of mark, and server is redistributed this unit and cut figure task, by other client executing.Specifically the mode of checking can be: client is regularly cut the implementation progress of figure task to server report active cell, and in each unit, cutting figure task can be to server Report Tasks performance while completing.
Other steps of the present embodiment, to embodiment illustrated in fig. 2 similar, are not repeated herein.
This embodiment has increased step 18, can not only monitor in real time the distribution state that figure task is cut in each unit, and
And can regularly understand the implementation progress that figure task is cut in unit, find that in time the situation of serious time delay appears in client executing while cutting figure task, it is processed in time, avoid, because indivedual client process slowly affect the schedule of the whole figure of cutting task, realizing the real-time monitoring of cutting figure task process.As can be seen here, even if single client breaks down and cannot complete its unit of bearing and cut figure task, can not have influence on other unit yet and cut completing of figure task.And can in time figure task be cut in the unit that occurs serious time delay and redistribute the client executing to other, ensure implementation progress and the quality of the whole figure of cutting task.
In addition,, on Fig. 2 or basis embodiment illustrated in fig. 3, the present invention also provides another preferably to cut drawing method embodiment, with reference to Fig. 4, in this preferred implementation, after above-mentioned steps 19, also comprises:
Step 111, server are cut figure tile according to the metamessage checking of cutting figure tile and whether are met mission requirements and if so, perform step 1111, and the task that is labeled as completes; If not, perform step 1112, the task of being labeled as does not complete and returns step 15, redistributes this unit and cuts figure task, step after repeating.
The present embodiment has increased the verification step 111 of cutting figure tile, can be after figure tile be cut in each client acquisition, checking is cut figure tile and whether is met the requirement that figure task is cut in unit, correct to guarantee that each cuts figure tile, and then guarantees that the high-quality of the whole figure of cutting task completes.
For aforesaid each embodiment of the method, for simple description, therefore it is all expressed as to a series of combination of actions, but those skilled in the art should know, the present invention is not subject to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in instructions all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
Corresponding above-mentioned electronic chart cut drawing method embodiment, the present invention also provides a kind of disposal system of electronic chart, below in conjunction with Fig. 5 ~ 10, be described in detail, Fig. 5 shows the schematic diagram of electronic chart disposal system embodiment of the present invention, comprising: server 21 and a plurality of client 22.In embodiments of the present invention, this system forms a distributed maps system of tiles by server 21 and a plurality of client 22.Server 21 is split as unit a plurality of, little, suitable particle size by a large complete figure task of cutting and cuts figure task, distributes to respectively client 22 executed in parallel, the metamessage that obtains a plurality of figure of cutting tiles and cut figure tile.
With reference to Fig. 6, show the structural representation of server example one of the present invention, server 21 specifically comprises:
Cut figure task and split module 211, for the unit that the whole figure of cutting task is split as to several suitable particle sizes according to default fractionation strategy, cut figure task.
Cut figure task scheduling modules 212, for said units being cut to figure task, distribute to the client 22 of current free time in good time.
The metamessage of cutting figure tile that unit after the main storage of memory module 214 splits is cut figure task, received.Cut figure tile and can be stored in server, client and other specified paths.
Accordingly, Fig. 7 has provided the structural representation of client implementation example one of the present invention, and client 22 specifically comprises:
Cut figure task receiver module 221, for cutting figure task from server 21 receiving elements.
Sending module 223, for sending the metamessage of cutting figure tile.
Further, Fig. 8 has provided the structural representation of server example two of the present invention, and on the basis of the server example one shown in Fig. 6, server 21 can also comprise:
Cut figure tile authentication module 216, for cutting figure tile according to the metamessage checking of cutting figure tile, whether meet mission requirements: if so, notify status logging modle 215 record cells are cut figure task and completed; If not, notice is cut figure task scheduling modules 212 and is redistributed this unit and cut figure task.
With reference to Fig. 9, on the basis of the server example two shown in Fig. 8, server 21 can further include:
Cut figure task management module 217, for interpolation, deletion or modification, cut figure task.The above-mentioned figure of cutting task is the whole large figure task of cutting.
With reference to Figure 10, provided the structured flowchart of the embodiment bis-of client, on the basis of the client implementation example one shown in Fig. 7, client 22 can also comprise:
Once it is idle that client 22 occurs, status report module 224 can notify at once current in idle condition, and server 21 in time allocation units is cut figure task, further accelerates to cut the schedule of figure task.
Visible, the disposal system of electronic chart provided by the invention is the distributed system erecting by a server and a plurality of client, figure task is cut in the unit that server splits into some suitable particle sizes by a complete figure task of cutting, distribute to respectively a plurality of client parallel processings, finally a plurality of figure of the cutting tiles that obtain are formed to the diagram data of cutting of users' needs.Process the situation of the whole figure of cutting task with prior art unit and compare, a plurality of client parallel execution units of the present invention are cut figure task, have effectively improved and have cut figure efficiency.Simultaneously, by the state recording module practice condition of monitoring unit task in real time, once a certain client breaks down or the serious time delay of figure task is cut in the busy unit that causes, will notify and cut figure task scheduling modules and redistribute this unit assignment and continued to carry out by other clients, the continuation that can not have influence on the whole figure of cutting task is carried out, once break down and just all working shifted onto to the working method of heavily coming and compare with prior art, not only improve the reliability of cutting figure tasks carrying, further improved work efficiency.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.For system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
The disposal system of cutting drawing method and a kind of electronic chart to a kind of electronic chart provided by the present invention above, be described in detail, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (11)
- Electronic chart cut a drawing method, by server and at least two clients, coordinate and carry out, it is characterized in that, comprising:Figure task is cut in the unit that server is split as several suitable particle sizes according to default fractionation strategy by the whole figure of cutting task;Server is cut figure task by described unit and is distributed to each client;Each client parallel execution unit is cut figure task, and figure tile is cut in acquisition and this cuts the metamessage of figure tile;Each client sends to server by the metamessage of the described figure of cutting tile.
- Electronic chart according to claim 1 cut drawing method, it is characterized in that described step: server is cut figure task by described unit and distributed to each client, is specially: server cuts by described unit the client that figure task is distributed to the current free time;Before this step, also comprise:Server and client communication, know the current state of each client.
- Electronic chart according to claim 2 cut drawing method, it is characterized in that, at described each client parallel execution unit, cut figure task, obtain and cut after figure tile and this cut the metamessage step of figure tile, also comprise:Server record is cut distribution state and the practice condition of figure task in unit described in each.
- Electronic chart according to claim 3 cut drawing method, it is characterized in that, described server record unit is cut distribution state and the practice condition of figure task, specifically comprises:Whether judging unit is cut figure task and is distributed, and is if so, labeled as and distributes; If not, be labeled as unallocated;Check that unit cuts the implementation progress of figure task, if the serious time delay of tasks carrying is cancelled and being carried out, redistribute to this task of other client executing.
- 5. according to the drawing method of cutting of the arbitrary described electronic chart of claim 1 to 4, it is characterized in that, after described each client sends to server step by the metamessage of the described figure of cutting tile, also comprise:Server according to described in cut and cut figure tile described in the metamessage checking of figure tile and whether meet mission requirements, the task that is if so, labeled as completes; If not, be labeled as that task does not complete and the task allocation step of returning is redistributed this unit and cut figure task.
- 6. a disposal system for electronic chart, is characterized in that, comprising: server and at least two clients; Wherein,Described server comprises:Cut figure task and split module, for the unit that the whole figure of cutting task is split as to several suitable particle sizes according to default fractionation strategy, cut figure task;Cut figure task scheduling modules, for the client that figure task is distributed to the current free time is cut in described unit in good time;Receiver module, for receiving the metamessage of cutting figure task or cutting figure tile;Memory module, cuts figure task, cuts the metamessage of figure tile or cuts figure tile for storing described some unit;Described client comprises:Cut figure task receiver module, for cutting figure task from described server receiving element;Cut module, for carrying out described unit, cut figure task, figure tile is cut in acquisition and this cuts the metamessage of figure tile;Sending module, for cutting the metamessage of figure tile described in sending.
- 7. the disposal system of electronic chart according to claim 6, is characterized in that, described server also comprises: state recording module, for recording unit, cut distribution state and the practice condition of figure task.
- 8. the disposal system of electronic chart according to claim 7, is characterized in that, described server also comprises:Cut figure tile authentication module, for cutting the metamessage of figure tile described in basis, verify whether cut figure tile meets mission requirements: if so, notify described state recording module records unit to cut figure task and complete; If not, cutting figure task scheduling modules described in notice redistributes this unit and cuts figure task.
- 9. according to the disposal system of the arbitrary described electronic chart of claim 6 to 8, it is characterized in that, also comprise:Security module, for ensureing communication security, data transmission security.
- 10. the disposal system of electronic chart according to claim 9, is characterized in that, described server also comprises:Cut figure task management module, for interpolation, deletion or modification, cut figure task.
- The disposal system of 11. electronic charts according to claim 10, is characterized in that, described client also comprises:Status report module, for reporting the work at present state of client itself.
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| CN112750130A (en) * | 2021-01-13 | 2021-05-04 | 苍穹数码技术股份有限公司 | Picture cutting method, device, equipment and readable storage medium |
| WO2021136529A1 (en) * | 2019-12-31 | 2021-07-08 | 清华大学 | Distributed map slicing method and apparatus, storage medium, and server |
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