CN107832386A - A kind of error correction method and apparatus of electronic map - Google Patents
A kind of error correction method and apparatus of electronic map Download PDFInfo
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- CN107832386A CN107832386A CN201711041239.3A CN201711041239A CN107832386A CN 107832386 A CN107832386 A CN 107832386A CN 201711041239 A CN201711041239 A CN 201711041239A CN 107832386 A CN107832386 A CN 107832386A
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- G—PHYSICS
- 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 present invention provides a kind of error correction method and apparatus of electronic map, and this method includes target map being divided into multiple grids, and obtains error deviation amount corresponding to each grid；By each grid, corresponding error deviation amount and its latitude and longitude coordinates save as multiple grid datas of preset length byte number respectively, to form engine file；The location data that positioning terminal is sent is received, and the location data is changed to obtain object location data；Latitude and longitude coordinates value in the object location data searches its matching network in the target map, and corresponding error deviation amount carries out error correction to the object location data in the engine file according to the matching network.The present invention effectively reduces data interaction amount during error correction, improves correction efficiency, and error correction accuracy is high by previously generating the engine file for error correction.
Description
Technical field
The present invention relates to technical field of geographic information, a kind of error correction method in particular to electronic map and
Device.
Background technology
The GPS point Coordinate Problem for needing to send back in real time reaction on map for navigator fix industry, it is existing
There is the problem of data-bias in the electronic maps such as Google, high moral, so as to cause the gps coordinate of vehicle point accurately anti-
Feedback is on map.On the other hand, solution method is also not quite similar used by the difference applied due to every profession and trade.For example, base can be used
In the correction database oneself established or based on the Vehicular real time monitoring function of Gis systems and track playback function etc., wherein, it is preceding
Person is huge based on the correction storehouse data volume that whole longitude and latitude points are set up, and the latter needs the data set rectified a deviation huge and with number
Frequent according to storehouse interaction, single inquiry correction storehouse can cause very big pressure to database, and data return speed cannot be guaranteed.
The content of the invention
In view of this, the present invention provides a kind of error correction method and apparatus of electronic map, can effectively solve the problem that above-mentioned
Problem.
Present pre-ferred embodiments provide a kind of error correction method of electronic map, including：
Target map is divided into multiple grids, and obtains error deviation amount corresponding to each grid, the error deviation
Amount includes the longitude offset and latitudinal offset amount of corresponding grid；
By each grid, corresponding error deviation amount and its latitude and longitude coordinates value save as preset length byte number respectively
Multiple grid datas, to form engine file；
The location data that positioning terminal is sent is received, and the location data is changed to obtain object location data；
Latitude and longitude coordinates value in the object location data searches its matching network in the target map,
And the object location data is missed according to the matching network corresponding error deviation amount corresponding in the engine file
Difference is corrected.
In the selection of present pre-ferred embodiments, the latitude and longitude coordinates value in the object location data searches it
Matching network in the target map, and according to the corresponding error deviation corresponding in the engine file of the matching network
The step of amount carries out error correction to the object location data includes：
Latitude and longitude coordinates value in the object location data, successively according to order from left to right, from top to bottom
The matching network of the lookup object location data in the target map；
The numbering of corresponding grid, and the corresponding net according to the numbering in the engine file are extracted according to lookup result
Lattice data；
The error deviation amount of the object location data is extracted from the grid data found to determine the target
Position data carry out error correction.
In the selection of present pre-ferred embodiments, the grid data is the binary data with 12 bytes, its
In, longitude offset and latitudinal offset amount in the error deviation amount account for 2 bytes respectively, in the latitude and longitude coordinates value
Longitude and latitude value account for 4 bytes respectively.
In the selection of present pre-ferred embodiments, the grid is rectangular mesh.
In the selection of present pre-ferred embodiments, the engine file is EXCEL file or access file.
In the selection of present pre-ferred embodiments, the step of target map is divided into multiple grids, includes：
The target map is divided into N number of parallel zone according to North and South direction at equal intervals, according to east-west direction at equal intervals
M parallel zone is divided into form M*N grid.
Present pre-ferred embodiments also provide a kind of error correction device of electronic map, including：
Mesh generation module, for target map to be divided into multiple grids, and it is inclined to obtain error corresponding to each grid
Shifting amount, the error deviation amount include the longitude offset and latitudinal offset amount of corresponding grid；
File generating module, for corresponding error deviation amount and its latitude and longitude coordinates value to save as respectively by each grid
Multiple grid datas of preset length byte number, to form engine file；
Data conversion module, for receive positioning terminal transmission location data, and the location data is changed with
Obtain object location data；
Module is corrected in matching, and it is searched in the target for the latitude and longitude coordinates value in the object location data
Matching network in map, and according to the corresponding error deviation amount corresponding in the engine file of the matching network to the mesh
Mark location data and carry out error correction.
In the selection of present pre-ferred embodiments, module is corrected in the matching to be included：
Data searching unit, for the latitude and longitude coordinates value in the object location data, successively according to from a left side to
The matching network of the lookup object location data of the right, order from top to bottom in the target map；
Data extracting unit, for extracting the numbering of corresponding grid according to lookup result, and drawn according to the numbering described
Hold up the corresponding grid data in file.
Error correction unit, the error for extracting the object location data from the grid data found are inclined
Shifting amount is with to object location data progress error correction.
In the selection of present pre-ferred embodiments, the grid data is the binary data with 12 bytes, its
In, longitude offset and latitudinal offset amount in the error deviation amount account for 2 bytes respectively, in the latitude and longitude coordinates value
Longitude and latitude value account for 4 bytes respectively.
In the selection of present pre-ferred embodiments, the grid is rectangular mesh.
Compared with prior art, the error correction method and apparatus of a kind of electronic map provided by the invention, wherein, pass through
Previously generate and realize error correction for the engine file of error correction, effectively reduce the data when carrying out error correction and hand over
Mutually amount, shortens the error correction time, improves correction efficiency, and error correction accuracy is high.In addition, the present invention is without installation
Based on the database engine of whole longitude and latitude points, correction framework deployment is simple, easy to implement.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the application scenarios schematic diagram of the error correction device of electronic map provided in an embodiment of the present invention.
Fig. 2 is the schematic flow sheet of the error correction method of electronic map provided in an embodiment of the present invention.
Fig. 3 is the sub-process schematic diagram of the error correction method of electronic map provided in an embodiment of the present invention.
Fig. 4 is the frame structure schematic diagram of the error correction device of electronic map provided in an embodiment of the present invention.
Fig. 5 is the frame structure schematic diagram of the matching correction module shown in Fig. 4.
Icon：10- electric terminals；The error correction device of 100- electronic maps；110- mesh generation modules；120- files
Generation module；130- data conversion modules；Module is corrected in 140- matchings；141- data searching units；142- data extracting units；
143- error correction units；200- memories；300- storage controls；400- processors.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
As shown in figure 1, the electronics of the error correction method and apparatus for applying electronic map provided in an embodiment of the present invention
The frame structure schematic diagram of terminal 10.The error correction device 100 of the electric terminal 10 including electronic map, memory 200,
Storage control 300 and processor 400.
Wherein, the memory 200, storage control 300,400 each element of processor are mutual directly or indirectly
It is electrically connected with, to realize the transmission of data or interaction.For example, pass through one or more communication bus or signal between these elements
Line, which is realized, to be electrically connected with.The error correction device 100 of the electronic map include it is at least one can be in the form of software or firmware
The software function module for being stored in the memory 200 or being solidificated in the operating system of the electric terminal 10.The place
Reason device 400 accesses the memory 200 under the control of the storage control 300, for performing in the memory 200
The executable module of storage, such as the software function module included by the error correction device 100 of the electronic map and calculating
Machine program etc..
Alternatively, the electric terminal 10 may be, but not limited to, smart mobile phone, IPAD, computer, server etc..
It should be appreciated that the structure shown in Fig. 1 is only to illustrate.The electric terminal 10 can have it is more more than shown in Fig. 1 or
The less component of person, or there is the configuration different from shown in Fig. 1.Wherein, each component shown in Fig. 1 can be by software, hardware
Or its combination is realized.
As shown in Fig. 2 it is that the flow of error correction method of electronic map that present pre-ferred embodiments provide a kind of is shown
It is intended to.The error correction method of the electronic map is applied to the electric terminal 10 shown in Fig. 1.Below in conjunction with Fig. 2 to described
The idiographic flow and step of the error correction method of electronic map are described in detail.
Step S110, target map is divided into multiple grids, and obtains error deviation amount corresponding to each grid, it is described
Error deviation amount includes the longitude offset and latitudinal offset amount of corresponding grid.
Wherein, the target map can be the electronic maps such as high moral map, Baidu map.Divided by the target map
For multiple grids, specifically, according to North and South direction electronic map can be divided into N number of parallel zone at equal intervals first, according still further to
East-west direction is divided into M parallel zone at equal intervals, so as to form M*N grid.During actual implementation, can be according to 1 kilometer
Spacing is divided at equal intervals to the target map, so as to form multiple 1*1 square kilometres of grid.Alternatively, the net
Lattice may be, but not limited to, rectangular mesh.
Further, error deviation amount corresponding to each grid can be directly from database corresponding to electronic map
Middle extraction, then cheaply amount is handled the error to extracting, so as to obtain marking by judgement of the longitude and latitude at each grid element center
Accurate error deviation amount.Such as, it is first determined the longitude and latitude X of the electronic map of each grid element center1M、YIN, and actual physics
Longitude and latitude X0M、Y0N, then calculate and store the longitude offset X of each grid2m、Y2n, wherein, X2m=X1m-X0m, Y2n=Y1N-
Y0N。
Step S120, by each grid, corresponding error deviation amount and its latitude and longitude coordinates value save as preset length respectively
Multiple grid datas of byte number, to form engine file.
Wherein, the latitude and longitude coordinates value included in the grid data is the accuracy value and latitude in the grid upper right corner
Value, the present embodiment are not particularly limited herein.
In addition, relative to database engine of the prior art, in the present embodiment, the engine file can be one
Relatively small text, EXCEL file or access file etc., data structure is simple in the engine file, data take
Internal memory is smaller, and data search speed is fast.
, can be by grid number when by each grid, corresponding error deviation amount is preserved respectively as a kind of embodiment
According to comprising grid latitude and longitude coordinates value and error deviation amount save as the byte of preset length, in other words, in the engine
In file, the corresponding grid data of byte number of each preset length.If for example, it is 12 bytes that the grid data, which is length,
Binary data, then, when being preserved to each grid data and generating engine file, the longitude in the error deviation amount
Offset and latitudinal offset amount account for 2 bytes respectively, and the longitude and latitude value in the latitude and longitude coordinates value account for 4 words respectively
Section, so as to effectively reduce the data volume in engine file.
Step S130, the location data that positioning terminal is sent is received, and the location data is changed to obtain target
Location data.
Wherein, the positioning terminal can be, but be not limited to the automobile with positioning and data transmit-receive function, mobile phone etc.
Terminal device.In the present embodiment, after the electric terminal 10 receives the real time positioning data that each positioning terminal is sent, need
Data conversion is carried out to it according to the location data type received, so as to obtain matching with the data type in engine file
Object location data.For example, the object location data can be, but binary data is not limited to, the present embodiment is herein not
Do concrete restriction.
Step S140, the latitude and longitude coordinates value in the object location data search it in the engine file
Matching network, and corresponding error deviation amount is entered to the object location data in the engine file according to the matching network
Row error correction..
Wherein, each location data is to include the data of latitude and longitude coordinates.Specifically, in the present embodiment, such as Fig. 3 institutes
Show, the step S140 can be realized by following sub-step.
Sub-step S141, the latitude and longitude coordinates value in the object location data, successively according to from left to right, from upper
The matching network of the lookup object location data of the order in the target map under.
Sub-step S142, the numbering of corresponding grid is extracted according to lookup result, and according to the numbering in the engine file
In corresponding grid data.
Sub-step S143, extracted from the grid data found the error deviation amount of the object location data with
Error correction is carried out to the object location data.
First, its in the target map is searched according to the latitude and longitude coordinates value included in each object location data
With grid, and corresponding to find during matching network, according to the numbering of the matching network, searched in the engine file with
Grid data corresponding to the numbering, the error deviation amount included in the grid data is finally extracted, to position number to the target
According to progress error correction.It should be noted that the numbering of the grid can be formed when being divided to the target map, and
When generating the engine file so that the grid numbering in target map described in each grid data is corresponding.Set by this
Meter, data interaction amount during error correction can be effectively reduced, improve the lookup speed and error correction efficiency of error deviation amount,
The accuracy when carrying out error correction to object location data is also ensure that simultaneously.
, can be according to searching when each grid in for the engine file is searched as a kind of embodiment
The latitude and longitude coordinates value of rope, using kilometer as interval, each grid is searched according to order from left to right, from top to bottom, if found
Grid be k-th (i.e. grid numbering be K), then in the index of the engine file (binary file) be just K*12.Example
Such as, the grid index bits of offset being directly targeted to using development language to the index search of binary file in the engine file
Put, find corresponding error deviation amount.
Further, as shown in figure 4, the frame structure of error correction device 100 of the electronic map provided for the present embodiment
Schematic diagram, wherein, the error correction device 100 of the electronic map includes mesh generation module 110, file generating module 120, number
Module 140 is corrected according to modular converter 130 and matching.
The mesh generation module 110, for target map to be divided into multiple grids, and obtain corresponding to each grid
Error deviation amount, the error deviation amount include the longitude offset and latitudinal offset amount of corresponding grid.
In the present embodiment, the step of description as described in the mesh generation module 110 is specifically referred to as shown in Fig. 2
S110 detailed description, that is, the step S110 can be performed by the mesh generation module 110.
The file generating module 120, for by each grid respectively corresponding to error deviation amount and its latitude and longitude coordinates
Multiple grid datas of preset length byte number are saved as, to form engine file.
In the present embodiment, the step of description as described in the file generating module 120 is specifically referred to as shown in Fig. 2
S120 detailed description, that is, the step S120 can be performed by the file generating module 120.
The data conversion module 130, carried out for receiving the location data of positioning terminal transmission, and to the location data
Change to obtain object location data.
In the present embodiment, the step of description as described in the data conversion module 130 is specifically referred to as shown in Fig. 2
S130 detailed description, that is, the step S130 can be performed by the data conversion module 130.
It is described matching correct module 140, for the latitude and longitude coordinates value in the object location data search its
Matching network in the engine file, and according to the matching network in the engine file corresponding error deviation amount to institute
State object location data and carry out error correction..
In the present embodiment, it is described matching correct module 140 as described in description specifically refer to as shown in Fig. 2 the step of
S140 detailed description, performed that is, the step S140 can correct module 140 by the matching.Specifically, such as Fig. 4 institutes
Show, in the present embodiment, the matching is corrected module 140 and entangled including data searching unit 141, data extracting unit 142 and error
Positive unit 143.
The data searching unit 141, for the latitude and longitude coordinates value in the object location data, successively according to
From left to right, the matching network of the lookup object location data of the order from top to bottom in the target map.
In the present embodiment, the step of description as described in the data searching unit 141 is specifically referred to as shown in Fig. 3
S141 detailed description, that is, the step S141 can be performed by the data searching unit 141.
The data extracting unit 142, for extracting the numbering of corresponding grid according to lookup result, and existed according to the numbering
Corresponding grid data in the engine file.
In the present embodiment, the step of description as described in the data extracting unit 142 is specifically referred to as shown in Fig. 3
S142 detailed description, that is, the step S142 can be performed by the data extracting unit 142.
The error correction unit 143, for extracting the object location data from the grid data found
Error deviation amount with to the object location data carry out error correction.
In the present embodiment, the step of description as described in the error correction unit 143 is specifically referred to as shown in Fig. 3
S143 detailed description, that is, the step S143 can be performed by the error correction unit 143.
In summary, the error correction method and apparatus of a kind of electronic map provided by the invention, wherein, pass through pre- Mr.
Into the engine file for error correction, the data interaction amount when carrying out error correction is effectively reduced, error is shortened and entangles
The positive time, correction efficiency is improved, and error correction accuracy is high.In addition, the present invention is based on whole longitude and latitude points without installation
Database engine, correction framework deployment is simple, easy to implement.
In the description of the invention, term " setting ", " connected ", " connection " should be interpreted broadly, for example, it may be fixed
Connect or be detachably connected, or be integrally connected；Can be mechanical connection or electrical connection；Can be direct
It is connected, can also be indirectly connected by intermediary, can be the connection of two element internals.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
In several embodiments that the embodiment of the present invention is provided, it should be understood that disclosed apparatus and method, also may be used
To realize by other means.Apparatus and method embodiment described above is only schematical, for example, the stream in accompanying drawing
Journey figure and block diagram show that the device of the predetermined number embodiment according to the present invention, method and computer program product may be real
Existing architectural framework, function and operation.At this point, each square frame in flow chart or block diagram can represent module, a journey
A part for sequence section or code.A part for the module, program segment or code includes one or predetermined number is used to realize
Defined logic function.
It should also be noted that at some as in the implementation replaced, the function of being marked in square frame can also be with difference
The order marked in accompanying drawing occurs.For example, two continuous square frames can essentially perform substantially in parallel, they are sometimes
It can also perform in the opposite order, this is depending on involved function.It is also noted that in block diagram and/or flow chart
The combination of each square frame and the square frame in block diagram and/or flow chart, the special of function as defined in performing or action can be used
Hardware based system is realized, or can be realized with the combination of specialized hardware and computer instruction.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of error correction method of electronic map, it is characterised in that including：
Target map is divided into multiple grids, and obtains error deviation amount corresponding to each grid, the error deviation amount bag
Include the longitude offset and latitudinal offset amount of corresponding grid；
By each grid, corresponding error deviation amount and its latitude and longitude coordinates value save as the multiple of preset length byte number respectively
Grid data, to form engine file；
The location data that positioning terminal is sent is received, and the location data is changed to obtain object location data；
Latitude and longitude coordinates value in the object location data searches its matching network in the target map, and root
According to the matching network, corresponding error deviation amount carries out error correction to the object location data in the engine file.
2. the error correction method of electronic map according to claim 1, it is characterised in that number is positioned according to the target
Latitude and longitude coordinates value in searches its matching network in the target map, and corresponding described according to the matching network
The step of corresponding error deviation amount carries out error correction to the object location data in engine file includes：
Latitude and longitude coordinates value in the object location data, successively according to order from left to right, from top to bottom in institute
State the matching network of the lookup object location data in target map；
The numbering of corresponding grid, and the corresponding grid number according to the numbering in the engine file are extracted according to lookup result
According to；
The error deviation amount of the object location data is extracted from the grid data found with to target positioning number
According to progress error correction.
3. the error correction method of electronic map according to claim 1, it is characterised in that the grid data be with
The binary data of 12 bytes, wherein, longitude offset and latitudinal offset amount in the error deviation amount account for 2 words respectively
Save, the longitude and latitude value in the latitude and longitude coordinates value account for 4 bytes respectively.
4. the error correction method of the electronic map according to any one of claim 1-3, it is characterised in that the grid
For rectangular mesh.
5. the error correction method of the electronic map according to any one of claim 1-3, it is characterised in that the engine
File is EXCEL file or access file.
6. the error correction method of electronic map according to claim 1, it is characterised in that be divided into target map more
The step of individual grid, includes：
The target map is divided into N number of parallel zone according to North and South direction at equal intervals, divided at equal intervals according to east-west direction
It is M parallel zone to form M*N grid.
A kind of 7. error correction device of electronic map, it is characterised in that including：
Mesh generation module, for target map to be divided into multiple grids, and error deviation amount corresponding to each grid is obtained,
The error deviation amount includes the longitude offset and latitudinal offset amount of corresponding grid；
File generating module, for by each grid respectively corresponding error deviation amount and its latitude and longitude coordinates value save as it is default
Multiple grid datas of length byte number, to form engine file；
Data conversion module, for receiving the location data of positioning terminal transmission, and the location data is changed to obtain
Object location data；
Module is corrected in matching, and it is searched in the target map for the latitude and longitude coordinates value in the object location data
In matching network, and according to the matching network in the engine file corresponding error deviation amount to the target position number
According to progress error correction.
8. the error correction device of electronic map according to claim 7, it is characterised in that module bag is corrected in the matching
Include：
Data searching unit, for the latitude and longitude coordinates value in the object location data, successively according to from left to right, from
The matching network of the lookup object location data of the order of top to bottm in the target map；
Data extracting unit, for extracting the numbering of corresponding grid according to lookup result, and according to the numbering in engine text
Corresponding grid data in part；
Error correction unit, for extracting the error deviation amount of the object location data from the grid data found
To carry out error correction to the object location data.
9. the error correction device of electronic map according to claim 7, it is characterised in that the grid data be with
The binary data of 12 bytes, wherein, longitude offset and latitudinal offset amount in the error deviation amount account for 2 words respectively
Save, the longitude and latitude value in the latitude and longitude coordinates value account for 4 bytes respectively.
10. the error correction device of the electronic map according to any one of claim 7-9, it is characterised in that the net
Lattice are rectangular mesh.
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| CN109712516A (en) * | 2018-12-20 | 2019-05-03 | 成都路行通信息技术有限公司 | A kind of vehicle distribution thermodynamic chart construction method and display systems based on GNSS device |
| CN109712516B (en) * | 2018-12-20 | 2021-08-24 | 成都路行通信息技术有限公司 | GNSS (Global navigation satellite System) equipment-based vehicle distribution thermodynamic diagram construction method and display system |
| CN111625612A (en) * | 2020-05-26 | 2020-09-04 | 北京百度网讯科技有限公司 | Deviation rectifying method and device for high-precision map, electronic equipment and storage medium |
| CN111625612B (en) * | 2020-05-26 | 2023-07-18 | 北京百度网讯科技有限公司 | Correction method and device for high-precision map, electronic equipment and storage medium |
| CN112419189A (en) * | 2020-11-23 | 2021-02-26 | 自然资源部国土卫星遥感应用中心 | Gridding satellite image data deviation rectifying method |
| CN112419189B (en) * | 2020-11-23 | 2021-08-31 | 自然资源部国土卫星遥感应用中心 | Gridding satellite image data deviation rectifying method |
| CN113157683A (en) * | 2021-05-12 | 2021-07-23 | 北京冠群信息技术股份有限公司 | Positioning and deviation rectifying method and system |
| CN114840629A (en) * | 2022-07-04 | 2022-08-02 | 智慧足迹数据科技有限公司 | Residence position correction method and device, electronic equipment and readable storage medium |
| CN114840629B (en) * | 2022-07-04 | 2022-09-20 | 智慧足迹数据科技有限公司 | Resident position correction method and device, electronic equipment and readable storage medium |
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Application publication date: 20180323 |