CN110347769A - Processing method, device, equipment and the storage medium of multi-layer map tile - Google Patents
Processing method, device, equipment and the storage medium of multi-layer map tile Download PDFInfo
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Abstract
The present invention relates to processing method, device, equipment and the storage mediums of a kind of multi-layer map tile, this method comprises: obtaining the tile information of current tile, wherein the tile information includes the position coordinates and level of the current tile；According to target tier and the position coordinates and level of the current tile, the current tile corresponding each target tile in the target tier is determined；The element in the target tile is extracted, and calculates the latitude and longitude coordinates of each element；According to the latitude and longitude coordinates and component attributes information of each element in the target tile, the space text description information of the target tile is determined；The space text description information of the current tile is updated using the space text description information of each target tile.In the synthesis of multi-layer tile, this method can be general, and synthesis precision is higher, and effect of visualization when large-size screen monitors are shown becomes apparent from.
Description
Technical field
The present invention relates to technical field of geographic information, and in particular to a kind of processing method of multi-layer map tile, device,
Equipment and storage medium.
Background technique
GIS-Geographic Information System (Geographic Information System, GIS) is to provide storage, display, analysis
The software or technology of geodata function mainly include that data input is shown with editor, data management, data manipulation and data
With output etc., as acquisition, processing, management and analyze geographical spatial data important tool, technology and subject.
Project based on GIS as platform has the demand of some large-size screen monitors effect of visualization, can embody entire city
Macro-effect, by taking house as an example, it is necessary to show in house with three-dimensional effect in entire city scope.Related skill
It in art, is typically based on the technologies such as remote sensing image and the grid tile of high-level is merged, then reduce the low layer after merging again
The resolution ratio of grade tile, to reach the acquisition of low-level tile data, and, the displaying of large-size screen monitors effect of visualization.And this side
In formula, it usually needs map is zoomed to bigger level, such as 16 grades can just show house face.
But general map under normal conditions is vector slice of data with the data in chart-pattern, aforesaid way is
It is not applicable, in addition, the precision that the tile of aforesaid way synthesizes is low, and, large-size screen monitors effect of visualization is poor.Therefore, with a set of vector
It is that we suffer from a problem that slice, which had not only been able to satisfy the visualization requirement of large-size screen monitors but also had been able to satisfy the displaying of universal map,.
Summary of the invention
In view of this, providing processing method, device, equipment and the storage medium of a kind of multi-layer map tile, improve
The versatility and precision of multilayer tile synthesis, enhance the effect of visualization of large-size screen monitors displaying.
The present invention adopts the following technical scheme:
In a first aspect, the embodiment of the present application provides a kind of processing method of multi-layer map tile, this method comprises:
Obtain current tile tile information, wherein the tile information include the current tile position coordinates and
Level；
According to target tier and the position coordinates and level of the current tile, determine the current tile in the mesh
Mark corresponding each target tile in level；
The element in the target tile is extracted, and calculates the latitude and longitude coordinates of each element；
According to the latitude and longitude coordinates and component attributes information of each element in the target tile, the mesh is determined
Mark the space text description information of tile；
The space text description information of the current tile is updated using the space text description information of each target tile.
Second aspect, the embodiment of the present application provide a kind of processing unit of multi-layer map tile, which includes:
Tile data obtaining module, for obtaining the tile information of current tile, wherein the tile information includes described
The position coordinates and level of current tile；
Target tile determining module, for the position coordinates and level according to target tier and the current tile, really
The fixed current tile corresponding each target tile in the target tier；
Element coordinate calculation module for extracting the element in the target tile, and calculates the warp of each element
Latitude coordinate；
Space text information determining module, for the latitude and longitude coordinates according to each element in the target tile
With component attributes information, the space text description information of the target tile is determined；
Space text information update module, for working as described in the space text description information update using each target tile
The space text description information of preceding tile.
The third aspect, the embodiment of the present application provide a kind of equipment, which includes:
Processor, and the memory being connected with the processor；
For the memory for storing computer program, the computer program is at least used to execute the embodiment of the present application the
The processing method of multi-layer map tile described in one side；
The processor is for calling and executing the computer program in the memory.
Fourth aspect, the embodiment of the present application provide a kind of storage medium, and the storage medium is stored with computer program,
When the computer program is executed by processor, realize each in the processing method of multi-layer map tile as described in relation to the first aspect
A step.
The invention adopts the above technical scheme, obtains the tile information of current tile, is assured that synthesis process in this way
In low-level tile；According to target tier and the position coordinates and level of current tile, determine current tile in destination layer
Corresponding each target tile in grade, is assured which of corresponding high-level tile of the low-level tile watt in this way
Piece；The element in target tile is extracted, and calculates the latitude and longitude coordinates of each element；According to each element in target tile
Latitude and longitude coordinates and component attributes information determine the space text description information of target tile；Using the sky of each target tile
Between text description information update current tile space text description information, consider the element category in each target tile in this way
Property information, merge the specific factor of corresponding high-level tile, by low-level tile so as to will be high when requesting low-level tile
Careful element returns in level tile；The element of high-level tile is merged by low-level tile to improve the synthesis of multilayer tile
Versatility and precision, and then improve large-size screen monitors show effect of visualization.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of bandwagon effect figure of the specific vector element applicable during the present invention is implemented within the scope of City-level；
Fig. 2 is a kind of flow chart of the processing method of multi-layer map tile provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the processing method of another multi-layer map tile provided in an embodiment of the present invention；
Fig. 4 is a kind of part slice schematic diagram for the geographic pattern being applicable in the embodiment of the present application；
Fig. 5 is a kind of schematic diagram for the element plane coordinates calculating process being applicable in the embodiment of the present application；
Fig. 6 is a kind of structural schematic diagram of the processing unit of multi-layer map tile provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of equipment provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
The application scenarios of the embodiment of the present application are illustrated first, WebGIS (World Wide Web Geographic
Information System, network geographic information system) in data to transmit common mode be vector slice, need to illustrate
It is that, in order to facilitate unified presentation, the tile in the embodiment of the present application is vector slice.Therefore, in the embodiment of the present application, pass through
A set of vector slice of data, by carrying out vector extraction element from corresponding high-rise grade pet chip to specified low layer grade pet chip,
To reach specific vector element in the displaying of City-level range.Fig. 1 shows a kind of specific vector element within the scope of City-level
Bandwagon effect figure.
Embodiment
Fig. 2 is a kind of flow chart of the processing method of multi-layer tile provided in an embodiment of the present invention, and this method can be by
The processing unit of multi-layer tile provided in an embodiment of the present invention executes, which can be used the mode of software and/or hardware
It realizes.With reference to Fig. 2, this method can specifically include following steps:
S201, the tile information for obtaining current tile, wherein the tile information includes position coordinates and level.
Wherein, map tile is to contain a series of scale bars, the map slice file in certain body of a map or chart.Map watt
Piece can all pass through rank, ranks uniquely tagged according to pyramid structure tissue, every tile.It is clear in translation, scaling map
Device is look at according to pyramid rule, required tile is calculated, obtains and splice from tile service device.Therefore, map tile is one
Kind improves the optimisation strategy of map view user experience.
Due to every tile can by rank and ranks uniquely tagged, in the embodiment of the present application, in order to
Determine which tile current tile is, need to get the tile information of current tile, tile information include position coordinates and
Level, optionally, position coordinates here can be ranks number, and level here refers to the rank of tile.In addition, due to this Shen
Please the technical solution of embodiment be the specific factor for merging corresponding high-level tile by low-level tile, it is therefore, first here
First determining current tile is low-level tile.In a specific example, it is 15 that current tile, which can be level, line number
It is 1, the tile that row number is 1.
S202, according to the position coordinates and level of target tier and the current tile, determine that the current tile exists
Corresponding each target tile in the target tier.
Specifically, due to being to merge corresponding high-level watt by low-level tile in the technical solution of the embodiment of the present application
The specific factor of piece, target tier are high-level.In actual application process, target tier is to preset, Ke Yigen
Demand during showing according to current large-size screen monitors determines, for example, it is desired to each building of some cell all large-size screen monitors are shown, then it can root
Target tier is determined according to this demand.In order to keep the expression of scheme apparent, goal level is illustrated with 16.It needs
Illustrate, the technical solution of the embodiment of the present application can be realized in the level that target tier is higher than the current tile.
In addition, at this time it needs to be determined that current tile corresponding each target tile in target tier, for example, level is
15, line number 1, which tile that the tile corresponding level that row number is 1 is 16.It should be noted that correspondence here is by ground
Reason map determines in slicing processes, alternatively, level is 15, line number 1, and the region A that the tile that row number is 1 indicates, then area
Domain A is shown in which tile that level is 16.
Therefore, in the position coordinates and level according to target tier and the current tile, the current tile is determined
In the target tier when corresponding each target tile, preset algorithm, the algorithm and slicing mode can be applied
Correlation is illustrated with a specific example here, does not form specific limit.For example, level is 15, and line number 1, column
It number is 16 for 1 tile corresponding level, line number is 2 and 3 and row number is 2 and 3 four tiles determined.
Element in S203, the extraction target tile, and calculate the latitude and longitude coordinates of each element.
In a specific example, target tile is four watts of (2,2), (3,2), (2,3), (3,3) in level 16
Then piece is illustrated by taking one of target tile as an example.Specifically, including multiple elements, element in each target tile
It can be greenery patches, river, house and road network etc..The element in the target tile of current research is extracted, each element is then calculated
Latitude and longitude coordinates, for example, calculate the latitude and longitude coordinates in each greenery patches in the target tile, the latitude and longitude coordinates in each river,
The latitude and longitude coordinates of the latitude and longitude coordinates in each house and each road network.In this way, the longitude and latitude of each element in the target tile is sat
Mark is assured that.
S204, according to the latitude and longitude coordinates and component attributes information of each element in the target tile, determine
The space text description information of the target tile.
Wherein, JSON (JavaScript Object Notation, JS object numbered musical notation) is that a kind of data of lightweight are handed over
Format is changed, data are stored and indicated using the text formatting for being totally independent of programming language；GeoJSON(Geographic
JavaScript Object Notation, Geo-JS object numbered musical notation) a kind of various gis structure datas are encoded
Format, the geospatial information data interchange format based on Javascript object representation.In the embodiment of the present application, space
Text description information is the data of GeoJSON format.
Specifically, the latitude and longitude coordinates of each element in target tile and component attributes information are integrated, come true
Set the goal the space text description information of tile.Wherein, Integration Mode can be describes according to space text in the prior art
Information constitutes to determine.In this manner it is possible to achieve the space text description information of each target tile.Realize space letter
The merging of breath and element information, spatial information for example can be the latitude and longitude coordinates data of each element, and element information is for example
It can be the attribute information of each element.
Optionally, the component attributes information includes the type, quantity and color of the element.Wherein, the type of element
Including greenery patches, river, house and road network etc., the quantity and color of element respectively correspond the type and face for referring to each element
Color.Color can be used to distinguish each element of identical element type.
S205, the space text description that the current tile is updated using the space text description information of each target tile
Information.
Specifically, getting the space text description information of each target tile, taking the above example as an example, level 16 is obtained
In (2,2), (3,2), (2,3), (3,3) four targets watt space text description information after, by the sky of this 4 target tiles
Between text description information update level 15 in (1,1) tile space text description information, thereby realize level 16
Tile from tile to level 15 merging, that is, realizing the spy merged in corresponding high-level tile by low-level tile
Determine element.
The invention adopts the above technical scheme, obtains the tile information of current tile, is assured that synthesis process in this way
In low-level tile；According to target tier and the position coordinates and level of current tile, determine current tile in destination layer
Corresponding each target tile in grade, is assured which of corresponding high-level tile of the low-level tile watt in this way
Piece；The element in target tile is extracted, and calculates the latitude and longitude coordinates of each element；According to each element in target tile
Latitude and longitude coordinates and component attributes information determine the space text description information of target tile；Using the sky of each target tile
Between text description information update current tile space text description information, consider the element category in each target tile in this way
Property information, merge the specific factor of corresponding high-level tile, by low-level tile so as to will be high when requesting low-level tile
Careful element returns in level tile；The element of high-level tile is merged by low-level tile to improve the synthesis of multilayer tile
Versatility and precision, and then improve large-size screen monitors show effect of visualization.
Fig. 3 is a kind of flow chart of the processing method for multi-layer map tile that further embodiment of this invention provides, this reality
Example is applied to realize on the basis of the above embodiments.With reference to Fig. 3, this method can specifically include following steps:
S301, the geographic pattern of pending area is subjected to slicing treatment, obtains the tile of each tile of each level
Information.
Specifically, pending area can be region of some city either some setting, for example, Xi'an, then to
The geographic pattern of processing region is the geographic pattern of Xi'an, and the geographic pattern is then carried out slicing treatment, thus can be with
The tile information of each tile of each level is obtained, for example, it includes how many a levels that the slice result, which has altogether, each level has
How many a tiles, and, line number and row number of each tile etc., that is, a tile can be uniquely determined by tile information.
In a specific example, map tile mode is sat by taking Google Map map as an example using Mercator projection
Mark, coordinate range be [- 20037508.3427892, -20037508.3427892,20037508.3427892,
20037508.3427892], range is a square, and side length is equal to terrestrial equator perimeter, using the upper left corner as origin, according to
The grid of pixel 256*256 is sliced.Fig. 4 shows a kind of part slice schematic diagram of geographic pattern, only with 16 in Fig. 4
Tile carries out example.
S302, the tile information for obtaining current tile, wherein the tile information includes position coordinates and level.
S303, according to the position coordinates and level of target tier and the current tile, calculate the current tile and exist
The position coordinates range of corresponding each target tile in the target tier.
Specifically, position coordinates range includes line number range and row number range, target tier for 16, current level
Line number, row number and level use (x, y, n) to indicate that then the line number range of 16 grades of tiles is [x*2 respectively16-n,...,(x+1)*216-n-
1], the row number range of 16 grades of tiles is [y*216-n,...,(y+1)*216-n-1].Therefore, when target tier is m, target tier
The row of tiles row number range of m is [x*2 respectivelym-n,...,(x+1)*2m-n- 1] and [y*2m-n,...,(y+1)*2m-n-1].In this way,
Line number, row number, level and the target tier of known current tile, so that it may determine the position coordinates range of each target tile,
That is, line number range and row number range.
It should be noted that the mode of above-mentioned calculating position coordinate range is an example, specific and slice mode,
Rule and the specific factor for needing to show are related, can be determined according to practical situation.
S304, each target tile is determined according to the position coordinates range of each target tile.
Optionally, according in the position coordinates range of each target tile row coordinate range and column coordinate range it is true
Fixed each target tile.Wherein, row coordinate range refers to line number range, and column coordinate range refers to row number range.It uses below
One specific example is illustrated, and target tier m takes 16, the level n of current tile to take 15, the line number x of current tile takes
1, the row number y of current tile takes 1.Then according to the range computation mode of the position coordinates of ranks number in above-described embodiment, 16 layers watts
Line number range in piece is [2,3], that is, line number can take 2 and 3,；Line number range in 16 layers of tile is [2,3], that is,
Row number can take 2 and 3, can determine that each target tile is watt at (2,2), (2,3), (3,2) and (3,3) position in this way
Piece.
Element in S305, the extraction target tile.
S306, the tile resolution ratio array for calculating the target tier.
Specifically, the conversion in order to realize element coordinate, needs exist for the tile resolution ratio array for calculating target tier.It is first
First, the tile solution that the tile pyramid in the embodiment of the present application can be proposed using Google Map, map projection
Using Web Mercator projection.Therefore, for convenience, Web Mercator projection have ignored in Mercator projection the deformation of north and south the two poles of the earth compared with
Big region, the earth of ellipse is projected into plane the square for becoming equal to equatorial perimeter, and the earth of the square is sat
Mark range be [- 180, -85.05112877980659,180,85.05112877980659], projection coordinate's range be [-
20037508.3427892,-20037508.3427892,20037508.3427892,20037508.3427892]。
And tile pyramid is then the cutting that different resolution is carried out based on this projection coordinate system.With a width world
For figure, n indicates the rank of map, and a width world map is divided into 0 to 22 levels by Google Map, and each level corresponds to phase
Answer the tile pyramid figure layer of resolution ratio.Each level tile pyramid resolution ratio Resolution calculation is as follows:
Every layer of pyramid shares 4nThe tile of a 256*256, n are pyramidal rank, and each level tile division can adopt
With quadtree approach, i.e., using the intersection point of equator and the first meridian as middle line, continuous to map carries out four points, until each net
Until lattice size is 256*256.For example, 0 grade of world map is indicated by a tile, 1 grade of world map is indicated by 4 tiles,
Every level-one and so on down.
It should be noted that since the resolution data for calculating target tier is without relying on other steps, S306 is not
It is certain to occur after S305, any time of S301 to S305 in the embodiment of the present application can occur, only apply here
One example is illustrated.
S307, the plane that each element is calculated using the pixel coordinate and the tile resolution ratio array of each element are sat
Mark.
In order to be compatible with efficient rendering of the two-dimensional map to tile, what the storage of element used is relative to the tile upper left corner
Generic pixel coordinate, for example, the storage mode in house face are as follows: and builds:[[12,6,23,42,46,67,33,15,12,
6], [127,12,157,13,187,55,127,12] ...] }, at this time, it may be necessary to which the pixel of the element in the tile of high-level is sat
The longitude and latitude that mark is converted to GeoJSON corresponds to format, firstly, by the pixel coordinate of each element and tile resolution data meter
Calculate the plane coordinates of each element.
Here it is illustrated with an element, Fig. 5 shows a kind of schematic diagram of element plane coordinates calculating process, application
The pixel coordinate of the element and tile resolution ratio array calculate the plane coordinates of present elements.In a specific example,
The line number of the tile of present elements is x, row number y, level n, and the pixel coordinate of present elements is (px1, px2), then
The calculation of the plane coordinates (x1, y1) of the element are as follows:
X1=x*256*Resolution [n]+px1*Resolution [n]；
Y1=y*256*Resolution [n]+py1*Resolution [n].
S308, by the two-dimensional assemblage be latitude and longitude coordinates.
It is latitude and longitude coordinates, example by two-dimensional assemblage specifically, calculation of longitude & latitude formula can be turned using Mercator
Such as, latitude and longitude coordinates are indicated with (lon, lat), then:
Lon=x1/20037508.3427892*180；
Lat=180/PI* (2*Arctan (Exp (y1/20037508.3427892*180*PI/180))-PI/2).
Wherein, PI indicates pi size, and Arctan is arctangent cp cp operation symbol, and Exp is exponent arithmetic symbol.
S309, according to the latitude and longitude coordinates and component attributes information of each element in the target tile, determine
The space text description information of the target tile.
S310, the space text description that the current tile is updated using the space text description information of each target tile
Information.
S311, the space text description information of updated current tile and the tile information of the current tile are sent
To front end, so that the front end shows the corresponding geographic pattern of the current tile.
Wherein, front end can be the front-end computer equipment shown to geographic pattern, and Front End or algorithm can be to hairs
Front-end computer equipment is received to the space text description information of updated current tile and the tile information of current tile
It is handled according to specified rule.For example, Front End can identify current tile is which tile of which layer, then using more
The space text description information of current tile after new carries out the operation such as parsing, in this way, front-end computer equipment can be shown
The corresponding geographic pattern of current tile, at this point, the geographic pattern that front-end computer equipment is shown is to incorporate in high-level tile
The geographic pattern of the low-level tile of specific factor.
In the embodiment of the present application, slicing treatment is carried out to the geographic pattern of pending area first, can be obtained by this way
The tile information of each tile of each level, to obtain the tile information of current tile and to determine target tier；Then
According to target tier and the position coordinates and level of current tile, current tile corresponding each mesh in target tier is calculated
The position coordinates range of tile is marked, each target tile is determined with this；Then in conjunction with the tile resolution ratio array of target tile
The plane coordinates of each element is realized to the conversion of latitude and longitude coordinates, to obtain each mesh with the pixel coordinate of each element
Mark the space text description information of tile；In addition, being updated in the embodiment of the present application in the space text information of current tile
Afterwards, the corresponding geographic pattern of current tile is shown, in this way, improving the effect of visualization of large-size screen monitors displaying.
In addition, the low-level tile parallel synthesis technique based on high-level map tile is usually according to height in the prior art
The map tile of level merges the map tile for generating corresponding low-level, and this method is mainly used for the grid of remote sensing image etc
Tile merges, and does not refer to the extraction merging of vector slice, does not provide the low layer of vector slice more popular at present
The method of grade map tile fusion high-level tile factor content.The application merges corresponding high-level by low-level vector tile
Vector tile specific factor, can will be more careful in high-level when for solving Web GIS service request low-level vector tile
The problem of element information returns.
Fig. 6 be the present invention be embodiment provide a kind of multi-layer map tile processing unit structural schematic diagram, should
Device is adapted for carrying out a kind of processing method for multi-layer map tile that the embodiment of the present invention is supplied to.As shown in fig. 6, the dress
Setting can specifically include: tile data obtaining module 601, target tile determining module 602, element coordinate calculation module 603, sky
Between text information determining module 604 and space text information update module 605.
Wherein, tile data obtaining module 601, for obtaining the tile information of current tile, wherein the tile information
Position coordinates and level including the current tile；Target tile determining module 602, for according to target tier and described
The position coordinates and level of current tile determine the current tile corresponding each target tile in the target tier,
Wherein, the target tier is higher than the level of the current tile；Element coordinate calculation module 603, for extracting the target
Element in tile, and calculate the latitude and longitude coordinates of each element；Space text information determining module 604 is used for basis
The latitude and longitude coordinates and component attributes information of each element in the target tile, determine the space of the target tile
Text description information；Space text information update module 605, the space text description information for each target tile of application is more
The space text description information of the new current tile.
The invention adopts the above technical scheme, obtains the tile information of current tile, is assured that synthesis process in this way
In low-level tile；According to target tier and the position coordinates and level of current tile, determine current tile in destination layer
Corresponding each target tile in grade, is assured which of corresponding high-level tile of the low-level tile watt in this way
Piece；The element in target tile is extracted, and calculates the latitude and longitude coordinates of each element；According to each element in target tile
Latitude and longitude coordinates and component attributes information determine the space text description information of target tile；Using the sky of each target tile
Between text description information update current tile space text description information, consider the element category in each target tile in this way
Property information, merge the specific factor of corresponding high-level tile, by low-level tile so as to will be high when requesting low-level tile
Careful element returns in level tile；The element of high-level tile is merged by low-level tile to improve the synthesis of multilayer tile
Versatility and precision, and then improve large-size screen monitors show effect of visualization.
Further, target tile determining module 602 includes:
Position coordinates range determination submodule, for the position coordinates and layer according to target tier and the current tile
Grade, calculates the position coordinates range of the current tile corresponding each target tile in the target tier；
Target tile determines submodule, described each for being determined according to the position coordinates range of each target tile
Target tile.
Further, target tile determines that submodule is specifically used for:
According in the position coordinates range of each target tile row coordinate range and column coordinate range determine described in
Each target tile.
It further, further include display module, the space text description information for each target tile of application updates institute
After the space text description information for stating current tile, by the space text description information of updated current tile and described work as
The tile information of preceding tile is sent to front end, so that the front end shows the corresponding geographic pattern of the current tile.
It further, further include tile resolution ratio array computing module, the longitude and latitude for calculating each element is sat
Before mark, the tile resolution ratio array of the target tier is calculated；
Correspondingly, element coordinate calculation module 603 is specifically used for:
The plane coordinates of each element is calculated using the pixel coordinate and the tile resolution ratio array of each element；
It is latitude and longitude coordinates by the two-dimensional assemblage.
It further, further include slicing treatment module, before the tile information for obtaining current tile, by pending district
The geographic pattern in domain carries out slicing treatment, obtains the tile information of each tile of each level.
Further, the component attributes information includes the type, quantity and color of the element.
The processing unit of multi-layer map tile provided in an embodiment of the present invention can be performed any embodiment of that present invention and provide
Multi-layer map tile processing method, have the corresponding functional module of execution method and beneficial effect.
The embodiment of the present invention also provides a kind of equipment, referring to Fig. 7, Fig. 7 is a kind of structural schematic diagram of equipment, such as Fig. 7
Shown, which includes: processor 710, and the memory 720 being connected with processor 710；Memory 720 is for storing
Computer program, the computer program are at least used to execute the processing side of the multi-layer map tile in the embodiment of the present invention
Method；Processor 710 is for calling and executing the computer program in the memory, the place of above-mentioned multi-layer map tile
Reason method include at least following steps: obtain the tile information of current tile, wherein the tile information include position coordinates and
Level；According to target tier and the position coordinates and level of the current tile, determine the current tile in the target
Corresponding each target tile in level；The element in the target tile is extracted, and calculates the longitude and latitude of each element
Coordinate；According to the latitude and longitude coordinates and component attributes information of each element in the target tile, the target is determined
The space text description information of tile；The sky of the current tile is updated using the space text description information of each target tile
Between text description information.
The embodiment of the present invention also provides a kind of storage medium, and the storage medium is stored with computer program, the calculating
When machine program is executed by processor, each step in the processing method such as the multi-layer map tile in the embodiment of the present invention is realized
Suddenly, the processing method of above-mentioned multi-layer map tile includes at least following steps: obtaining the tile information of current tile, wherein
The tile information includes position coordinates and level；According to target tier and the position coordinates and level of the current tile,
Determine the current tile corresponding each target tile in the target tier；The element in the target tile is extracted,
And calculate the latitude and longitude coordinates of each element；According to the latitude and longitude coordinates of each element in the target tile and
Component attributes information determines the space text description information of the target tile；It is retouched using the space text of each target tile
State the space text description information of current tile described in information update.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that in the description of the present invention, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of processing method of multi-layer map tile characterized by comprising
Obtain the tile information of current tile, wherein the tile information includes position coordinates and level；
According to target tier and the position coordinates and level of the current tile, determine the current tile in the destination layer
Corresponding each target tile in grade, wherein the target tier is higher than the level of the current tile；
The element in the target tile is extracted, and calculates the latitude and longitude coordinates of each element；
According to the latitude and longitude coordinates and component attributes information of each element in the target tile, the target watt is determined
The space text description information of piece；
The space text description information of the current tile is updated using the space text description information of each target tile.
2. the method according to claim 1, wherein described according to target tier and the position of the current tile
Coordinate and level are set, determines the current tile corresponding each target tile in the target tier, comprising:
According to target tier and the position coordinates and level of the current tile, the current tile is calculated in the destination layer
The position coordinates range of corresponding each target tile in grade；
Each target tile is determined according to the position coordinates range of each target tile.
3. according to the method described in claim 2, it is characterized in that, the position coordinates model according to each target tile
It encloses and determines each target tile, comprising:
According in the position coordinates range of each target tile row coordinate range and column coordinate range determine it is described each
Target tile.
4. the method according to claim 1, wherein the space text using each target tile describes letter
Breath updates after the space text description information of the current tile, further includes:
The tile information of the space text description information of updated current tile and the current tile is sent to front end, with
The front end is set to show the corresponding geographic pattern of the current tile.
5. the method according to claim 1, wherein the latitude and longitude coordinates for calculating each element it
Before, further includes: calculate the tile resolution ratio array of the target tier；
Correspondingly, the latitude and longitude coordinates for calculating each element, comprising:
The plane coordinates of each element is calculated using the pixel coordinate and the tile resolution ratio array of each element；
It is latitude and longitude coordinates by the two-dimensional assemblage.
6. the method according to claim 1, wherein also being wrapped before the tile information for obtaining current tile
It includes:
The geographic pattern of pending area is subjected to slicing treatment, obtains the tile information of each tile of each level.
7. method according to claim 1-6, which is characterized in that the component attributes information includes the element
Type, quantity and color.
8. a kind of processing unit of multi-layer map tile characterized by comprising
Tile data obtaining module, for obtaining the tile information of current tile, wherein the tile information includes described current
The position coordinates and level of tile；
Target tile determining module determines institute for the position coordinates and level according to target tier and the current tile
State current tile corresponding each target tile in the target tier；
Element coordinate calculation module for extracting the element in the target tile, and calculates the longitude and latitude of each element
Coordinate；
Space text information determining module, for according to the latitude and longitude coordinates of each element in the target tile and wanting
Plain attribute information determines the space text description information of the target tile；
Space text information update module, the space text description information for each target tile of application update described current watt
The space text description information of piece.
9. a kind of equipment characterized by comprising
Processor, and the memory being connected with the processor；
The memory is at least used for perform claim and requires any one of 1-7 for storing computer program, the computer program
The processing method of the multi-layer map tile；
The processor is for calling and executing the computer program in the memory.
10. a kind of storage medium, which is characterized in that the storage medium is stored with computer program, the computer program quilt
When processor executes, each step in the processing method such as the described in any item multi-layer map tiles of claim 1-7 is realized.
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