CN103425800B - map visualization method, device and processor - Google Patents

Abstract

The present invention relates to GIS-Geographic Information System field, particularly relate to a kind of map visualization method, device and processor.In the method, first the map data file of each floor, annexation tables of data and the coordinate transfer parameters in two-dimensional map is obtained, then according to coordinate transfer parameters, map data file and annexation tables of data are carried out coordinate transfer, obtain the map data file after coordinate transfer and the annexation of each floor gap, after getting map denotation request, perform the operation of corresponding map denotation.The coordinate branching algorithm of the method application is fairly simple, data processing speed is fast, in an orderly manner the map datum of the multiple single plane floor of script Discrete Distribution can be carried out integrant expression, the information of all floors in the whole building of displaying of integration, and the map data file formed meets the rule of human eye three-dimensional imaging, stereo-effect is relatively good, less demanding to hardware configuration.

Description

Map visualization method, device and processor

Technical field

The present invention relates to GIS-Geographic Information System field, particularly relate to a kind of map visualization method, device and processor.

Background technology

At present, on GIS(Geographic Information System or Geo-Information system, ground Reason information system) field, the Visualization of map is become a study hotspot.Visual map has the most excellent Gesture, wherein, by map is carried out Visualization, can be effectively improved professional skill and the operating capability of government department, example As, when carrying out fire-fighting emergent and directing rescue work, Visualization according to the map and Orientation on map technology, it is possible to be accurately positioned, And visualization shows fireman and the position of the stranded masses, formulate efficient rescue scenario accordingly；It addition, by visually Figure, also helps ability and the level of further Improving Government service the public, and such as, according to this technology, user can be very convenient Find toilet nearest in shop, or the registration mouth of a certain flight in airport.

In prior art, when carrying out the Visualization of map, can be realized by the technology of virtual reality, in the method The software of the virtual reality relied on, for supporting the threedimensional model utilizing the software development such as 3Dmax to go out, by this threedimensional model, Realize the three-dimensional visualization of map.Furthermore it is also possible to realized by two dimensional map data file, in GIS applies, each two dimension Map data file represents the plane information of respective storey, when needs carry out Visualization to map, by described two dimension Map data file, can show the plane information of this floor accordingly.

But, inventor finds in the research process of the application, uses the technology of virtual reality to realize the visual of map During change, higher hardware configuration is needed to realize；It addition, in prior art, utilize the ground that two dimensional map data file builds Diagram data, is scattered physically or the most all, can only divide the plane individually showing each floor of floor Information, it is impossible to the information of all floors in the whole building of displaying of integration.

Summary of the invention

In view of this, it is an object of the invention to provide a kind of map visualization method, device and processor, existing to solve Have in technology, when utilizing the visualization that Intel Virtualization Technology realizes map, the problem needing higher configured having, and utilize existing Map products, it is achieved during the visualization of map, the problem that the plane information individually showing each floor of floor can only be divided.Tool Body embodiment is as follows:

A kind of map visualization method, including:

Obtain the map data file of each floor, annexation tables of data and coordinate transfer parameters in two-dimensional map, its In, described map data file includes road net data file and other map data files, and described annexation tables of data comprises Having the junction point of each floor, described coordinate transfer parameters to include: the most corresponding x, the scaling in y-axis direction, coordinate shift After oblique coordinates in x, the angle of y-axis, and the gap length of each floor gap；

According to described coordinate transfer parameters, in the coordinate in described map data file and described annexation tables of data The coordinate of junction point carry out coordinate transfer, obtain the map data file after coordinate transfer, and the map after being shifted by coordinate Each road net data file and the coordinate of described junction point in data file are merged into a road net data file；

After obtaining map denotation request, the map data file after being shifted by described coordinate is overlapped display.

Preferably, described map visualization method also includes:

Obtain the connection cost between the junction point of each floor described, and after described connection cost is carried in described merging Road net data file in.

Preferably, described according to coordinate transfer parameters, to the coordinate in described map data file and annexation data The coordinate of the junction point in table carries out the algorithm of coordinate transfer:

$\left\{\begin{array}{c}{x}^{\&prime;}=X_{\mathrm{scale}}\&times;x+|Y_{\mathrm{scale}}\&times;\cos \mathrm{\&alpha;}\&times;y|\\ y^{\&prime;}=Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;y+(i-1)\&times;(Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;L_{\max }+\mathrm{\&Delta;})\end{array}\right.,(0<\mathrm{\&alpha;}<\mathrm{\&pi;},\mathrm{\&alpha;}\&NotEqual;\frac{\mathrm{\&pi;}}{2};\mathrm{\&Delta;},X_{\mathrm{scale}},Y_{\mathrm{scale}}\&Element;R^{+};i\&Element;Z^{+})$

Wherein, x and y is the coordinate before coordinate transfer, and x ' and y ' is the coordinate after coordinate transfer, X_scaleAnd Y_scaleRespectively Representing when carrying out coordinate transfer, the most corresponding x, the scaling in y-axis direction, α is in the oblique coordinates after coordinate transfer X, the angle of y-coordinate between centers, Δ is the gap length of each floor gap, and i is floor number, L_maxEach building before shifting for coordinate In the described map data file of layer, outsourcing rectangle is in the greatest length of y-axis.

Preferably, before carrying out coordinate transfer according to described coordinate branching algorithm, also include:

Obtaining in the described map data file of each floor before coordinate transfer, outsourcing rectangle is in the greatest length of y-axis L_max；

Judge gap length Δ and the Y of described each floor gap_scale×L_maxValue between difference whether in allowed band, If described difference is not in described allowed band, then reacquire the gap length Δ of described each floor gap, in order to according to institute The gap length Δ stating reacquisition carries out the calculating of coordinate transfer.

Preferably, described map visualization method also includes:

Reception processes the Map request of terminal transmission；

Map data file corresponding for the request of described Map is changed into the data mode that described processing terminal is supported, And the map data file transmission after converting is to described processing terminal, described processing terminal carry out visualization display.

Accordingly, the invention also discloses a kind of map visualization device, including:

First acquisition module, for obtaining the map data file of each floor in two-dimensional map, annexation tables of data With coordinate transfer parameters, wherein, described map data file includes road net data file and other map data files, described company Connecing relation database table and include the junction point of each floor, described coordinate transfer parameters includes: the most corresponding x, the contracting in y-axis direction Put x in the oblique coordinates after ratio, coordinate transfer, the angle of y-axis, and the gap length of each floor gap；

Coordinate shift module, for according to described coordinate transfer parameters, to the coordinate in described map data file and institute The coordinate stating the junction point in annexation tables of data carries out coordinate transfer, obtains the map data file after coordinate transfer, and Each road net data file in map data file and the coordinate of described junction point after being shifted by coordinate are merged into a road Network data file；

Display operation module, after being used for obtaining map denotation request, the map data file after being shifted by described coordinate enters Row Overlapping display.

Preferably, described map visualization device also includes:

Second acquisition module, for obtaining the connection cost between the junction point of each floor described, and connects into described Originally it is carried in the road net data file after described merging.

Preferably, in described coordinate shift module, the algorithm carrying out coordinate transfer is:

$\left\{\begin{array}{c}{x}^{\&prime;}=X_{\mathrm{scale}}\&times;x+|Y_{\mathrm{scale}}\&times;\cos \mathrm{\&alpha;}\&times;y|\\ y^{\&prime;}=Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;y+(i-1)\&times;(Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;L_{\max }+\mathrm{\&Delta;})\end{array}\right.,(0<\mathrm{\&alpha;}<\mathrm{\&pi;},\mathrm{\&alpha;}\&NotEqual;\frac{\mathrm{\&pi;}}{2};\mathrm{\&Delta;},X_{\mathrm{scale}},Y_{\mathrm{scale}}\&Element;R^{+};i\&Element;Z^{+})$

Wherein, x and y is the coordinate before coordinate transfer, and x ' and y ' is the coordinate after coordinate transfer, X_scaleAnd Y_scaleRespectively Representing when carrying out coordinate transfer, the most corresponding x, the scaling in y-axis direction, α is in the oblique coordinates after coordinate transfer X, the angle of y-coordinate between centers, Δ is the gap length of each floor gap, and i is floor number, L_maxEach building before shifting for coordinate In the described map data file of layer, outsourcing rectangle is in the greatest length of y-axis.

Preferably, described map visualization device also includes:

3rd acquisition module, in the described map data file of each floor before obtaining coordinate transfer, outsourcing square Shape is at the greatest length L of y-axis_max；

Judge module, for judging gap length Δ and the Y of described each floor gap_scale×L_maxValue between difference whether In allowed band, if described difference is not in described allowed band, then reacquire the gap length of described each floor gap Δ, in order to carry out the calculating of coordinate transfer according to the gap length Δ of described reacquisition.

Preferably, institute's map visualization device, also include:

Receiver module, for receiving the Map request processing terminal transmission；

Transport module, props up for map data file corresponding for the request of described Map is changed into described processing terminal The data mode held, and the map data file transmission after converting is to described processing terminal, described processing terminal carrying out can Depending on changing display.

Accordingly, the invention also discloses a kind of processor, the chip of described processor is integrated with as above Figure visualization device.

In map visualization method disclosed in the present application, the first map number of each floor in acquisition two-dimensional map According to file, annexation tables of data and coordinate transfer parameters, then according to described coordinate transfer parameters, to described map datum literary composition The coordinate of the coordinate in part and the junction point in annexation tables of data carries out coordinate transfer, obtains the map number after coordinate transfer According to file, and the coordinate of each road net data file in the map data file after coordinate transfer and described junction point is merged Become a road net data file, get map denotation request after, according to described coordinate shift after map data file and The annexation of each floor gap, performs the operation of corresponding map denotation.

In above-mentioned map visualization method, by the map data file in multiple two-dimensional maps, it is converted into plane oblique angle The data file that coordinate system builds, and utilize the order of floor gap and floor gap every, according to the junction point of contiguous floors, in longitudinal direction On be arranged in order each floor, form a kind of data model utilizing two dimensional surface to express three-dimensional coordinate structure such that it is able to fast The Visualization realizing map of speed.Owing to the coordinate branching algorithm of the method application is fairly simple, data processing speed is fast, And the map data file formed meets the rule of human eye three-dimensional imaging, stereo-effect is relatively good, relative in prior art For the virtual technology used, less demanding to hardware configuration, it is possible to cost-effective.It addition, after the transfer of the application coordinate Map data file, owing to constructing the annexation of each floor gap according to junction point, and is arranged on road by this annexation In network data file, it is possible in an orderly manner the map datum to the multiple single plane floor of script Discrete Distribution carry out integrate and Express, it is possible to the information of all floors in the whole building of displaying of integration.

Further, the map data file that the application gets after coordinate shifts, substantially remain a kind of two Dimension data, therefore, it is possible to the various functions in the existing two-dimension GIS of seamless support, such as space querying and analytic function, it is simple to Follow-up carry out application and development based on this map data file, there is good practicality.And, prior art utilizes two-dimensionally Diagram data file builds the mode of map, owing to the organizational structure of this map is dispersion physically or the most all , it is difficult to by traditional two-dimension GIS inquiry, analysis method, whole floor is inquired about and analyzed, and in the application, owing to setting Determined the junction point of each floor gap, obtained the annexation of each floor gap such that it is able to by inside-plant respectively Individual floor, as an entirety, carries out the space querying analysis of integration.

It addition, in map visualization method disclosed in the present application, it is also possible to after receiving Map request, obtain institute State the map data file that Map request is corresponding, described map data file is converted into the data that request transmission side supports Form, then transmit it to the processing terminal asking transmission side corresponding, this processing terminal map is carried out visualization and show.Its In, described processing terminal is usually handheld terminal, such as mobile phone etc., expands the range of application of map visualization.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to Other accompanying drawing is obtained according to these accompanying drawings.

Fig. 1 is the workflow schematic diagram of a kind of map visualization method disclosed in the embodiment of the present invention；

Fig. 2 is the ground diagram in a kind of two-dimensional map disclosed in prior art constructed by the map data file of each floor It is intended to；

Fig. 3 is the map signal constructed by the map data file in map visualization method disclosed in the embodiment of the present invention Figure；

Fig. 4 is the structural representation of a kind of map visualization device disclosed in the embodiment of the present invention.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.

This application discloses a kind of map visualization method, to solve in prior art, utilize Intel Virtualization Technology to realize ground During the visualization of figure, the problem needing higher configured having, and utilize existing map products, it is achieved the visualization of map Time, the problem that the plane information individually showing each floor of floor can only be divided.Workflow schematic diagram shown in Figure 1, Map visualization method disclosed in the present application includes:

The map data file of each floor, annexation tables of data and coordinate transfer in step S11, acquisition two-dimensional map Parameter, wherein, described map data file includes road net data file and other map data files, described annexation data Table includes map data file bag described in the junction point of each floor, and described coordinate transfer parameters includes: the most corresponding x, y-axis X in oblique coordinates after the transfer of the scaling in direction, coordinate, the angle of y-axis, and the gap length of each floor gap.

At present, the map data file of conventional 2-D data, all in plane right-angle coordinate undertissue, utilize logical Normal two-dimension GIS (Geographic Information System or Geo-Information system, geography information system System) data, the indoor map data of n floor generally have n to overlap map datum, and are all located under same plane rectangular coordinate system, It is difficult in the way of solid image carry out Visualization.Described map data file can be designated as, wherein, i's and j Value is positive integer, and i represents floor number, and such as the first floor, its floor number is usually 1, the floor number of the second floor Being 2, j represents the numbering of map data file, content_jFor map data file corresponding different pieces of information content, wherein, Described map data file includes: road net data file, stairs port data file, room data file and body of wall data file Deng, in this case, content₁When corresponding is road net data, thenRepresent is road net data file.Further, Connection cost in road net data file, in the floor of each plane that can obtain correspondence.

In described annexation tables of data LinkTable, include the junction point of each floor, be used for determining contiguous floors Between annexation, such as, when with LinkP_AAnd LinkP_BWhen representing the junction point of adjacent two floors, the two junction point pair In described annexation tables of data LinkTable answered, comprise LinkP_APlace floor number, LinkP_ATrue geographical coordinate, LinkP_BPlace floor number and LinkP_BTrue geographical coordinate.Wherein, described junction point can be stairs port and lift port etc. Position, the application does not limits.

It addition, the map data file of each floor that described coordinate transfer parameters is in the two-dimensional map that will get Be converted to oblique coordinates, with the map data file after being shifted by coordinate, construct the visual effect of a kind of solid.Generally, The described map data file of two dimension is showed by plane right-angle coordinate, if the map data file got in the application Not being plane right-angle coordinate, available prior art is converted into plane right-angle coordinate.Described coordinate transfer parameters bag Include: when being converted into oblique coordinates, the scaling X respectively at x, on y-axis direction_scaleAnd Y_scale；Coordinate transfer after oblique In angle coordinate system, x, the angle α of y-coordinate axle, and the gap length Δ of each floor.

Step S12, according to described coordinate transfer parameters, to the coordinate in described map data file and annexation data The coordinate of the junction point in table carries out coordinate transfer, obtains the map data file after coordinate transfer, and by after coordinate transfer Each road net data file and the coordinate of described junction point in map data file are merged into a road net data file.

In existing two-dimension GIS technology, each floor in a solitary building, all there is its corresponding a set of map number According to file, the most a set of map data file includes: road net data file, room data file and wall data file etc. are many Kind, and original road net data file sign is the road in corresponding floor.In step S12, by coordinate shift after each The coordinate of the junction point after the road net data file of individual floor, and coordinate transfer is merged into a road net data file, then can Enough according to the road net data file after described merging, determine the annexation of each floor gap.

Each corresponding for each floor road net data Piece file mergence is a road net data file by the application, and at it In be loaded with the coordinate of junction point such that it is able to close according to the connection of road net data each floor gap of file acquisition after this merging System, and show after each floor superposition.It addition, in the application, it is also possible to by other same type of map datum literary compositions Part merges, and such as, can be a room by each corresponding for each floor after coordinate transfer room data Piece file mergence Data file etc., it is simple to query analysis.

After step S13, acquisition map denotation request, the map data file after being shifted by described coordinate is overlapped showing Show.

The map data file of each floor in two-dimensional map shown in Figure 2, constructed map schematic diagram, this figure Including four plane maps, the most corresponding Stall is to 4th floors, and the map data file of each floor divides the list of floor accordingly Solely illustrate the plane information of each floor.After Coordinate Conversion, by the plane rectangular coordinates of the map in each floor System is converted into oblique coordinates, and according to the junction point after coordinate transfer, obtains the annexation of each floor gap, according to seat Floor is carried out migration stack by gap length Δ and the floor number of each floor set in mark transfer parameters, then can form figure The stereoeffect of the map data file after the coordinate transfer shown in 3, wherein, the line segment connected between each floor, Ji Kebiao Annexation between showing.

The map data file got in step s 11, meets Data Format requirement, and it is carried out by the application After coordinate transfer, the map data file got still conforms to Data Format requirement, and be provided with each floor gap Annexation, thus receive map denotation request after, can according to described coordinate shift after map data file carry out Overlapping display.

In map visualization method disclosed in the present application, the first map number of each floor in acquisition two-dimensional map According to file, annexation tables of data and coordinate transfer parameters, then according to described coordinate transfer parameters, to described map datum literary composition The coordinate of the coordinate in part and the junction point in annexation tables of data carries out coordinate transfer, obtains the map number after coordinate transfer According to file, and the coordinate of each road net data file after coordinate transfer and described junction point is merged into a road net data literary composition Part, after getting map denotation request, performs the operation of corresponding map denotation.

In above-mentioned map visualization method, by the map data file in multiple two-dimensional maps, it is converted into plane oblique angle The data file that coordinate system builds, and utilize the order of floor gap and floor gap every, according to the junction point of contiguous floors, in longitudinal direction On be arranged in order each floor, form a kind of data model utilizing two dimensional surface to express three-dimensional coordinate structure such that it is able to fast The Visualization realizing map of speed.Owing to the coordinate branching algorithm of the method application is fairly simple, data processing speed is fast, And the map data file formed meets the rule of human eye three-dimensional imaging, stereo-effect is relatively good, relative in prior art For the virtual technology used, less demanding to hardware configuration, it is possible to cost-effective.It addition, after the transfer of the application coordinate Map data file, owing to constructing the annexation of each floor gap according to junction point, it is possible in an orderly manner to discrete point originally The map datum of the multiple single plane floor of cloth is integrated and is expressed, it is possible to institute in the whole building of displaying of integration There is the information of floor.

Further, the map data file that the application gets after coordinate shifts, substantially remain a kind of two Dimension data, therefore, it is possible to the various functions in the existing two-dimension GIS of seamless support, such as space querying and analytic function, it is simple to Follow-up carry out application and development based on this map data file, there is good practicality.And, prior art utilizes two-dimensionally Diagram data file builds the mode of map, owing to the organizational structure of this map is dispersion physically or the most all , it is difficult to by traditional two-dimension GIS inquiry, analysis method, whole floor is inquired about and analyzed, and in the application, owing to setting Determined the junction point of each floor gap, obtained the annexation of each floor gap such that it is able to by inside-plant respectively Individual floor, as an entirety, carries out the space querying analysis of integration.

Further, described map visualization method also includes: the connection obtained between the junction point of each floor described becomes This, and described connection cost is carried in the road net data file after described merging.

Wherein, passing through under described connection cost can be the actual physics length between two junction points, different current mode Time or current required fund etc., this is not limited by the application.Described connection cost is loaded onto the road after described merging In network data file, be conducive to fully combining the connection cost of each floor gap, multiple floors are carried out the analysis of integration.Example As, after the map data file after getting coordinate transfer, the display that it can be carried out three-dimensional, user is by this map Data file carries out two-dimension GIS space querying analysis, can inquire about the acquisition annexation of each floor, the geography at place, room The information such as the position at position and stairs port place.After loading described connection cost, user can also be looked into by two-dimension GIS space Ask analysis method, get the connection cost from a certain floor to another floor.

When, in map visualization method disclosed in the present application, also including the company obtaining between the junction point of each floor described During the step of logical cost, this step can perform before step S11 or after step S13, it is also possible to step S11 to step S13 it Between perform, this is not limited by the application.Generally, described connection cost can be arranged in described annexation tables of data, this In the case of Zhong, described annexation tables of data is as shown in the table:

In upper table, LinkP_AAnd LinkP_BRepresent the junction point of two floor gaps respectively, and be provided with described LinkP_AWith LinkP_BDistinguish corresponding floor number, true geographical coordinate and connect cost.After obtaining described annexation tables of data, i.e. Described connection cost can be carried in the map data file after the transfer of described coordinate, it is simple to follow-up each floor gap of combination Annexation with connect cost, the integration of many floors is carried out applied analysis.

It addition, described in step S12 according to coordinate transfer parameters, to the coordinate in described map data file and connection The coordinate of the junction point in relation database table carries out the algorithm of coordinate transfer:

$\left\{\begin{array}{c}{x}^{\&prime;}=X_{\mathrm{scale}}\&times;x+|Y_{\mathrm{scale}}\&times;\cos \mathrm{\&alpha;}\&times;y|\\ y^{\&prime;}=Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;y+(i-1)\&times;(Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;L_{\max }+\mathrm{\&Delta;})\end{array}\right.,(0<\mathrm{\&alpha;}<\mathrm{\&pi;},\mathrm{\&alpha;}\&NotEqual;\frac{\mathrm{\&pi;}}{2};\mathrm{\&Delta;},X_{\mathrm{scale}},Y_{\mathrm{scale}}\&Element;R^{+};i\&Element;Z^{+})$

Wherein, x and y is the coordinate before coordinate transfer, and x ' and y ' is the coordinate after coordinate transfer, X_scaleAnd Y_scaleRespectively Representing when carrying out coordinate transfer, the most corresponding x, the scaling in y-axis direction, α is in the oblique coordinates after coordinate transfer X, the angle of y-coordinate between centers, Δ is the gap length of each floor gap, and i is floor number, L_maxEach building before shifting for coordinate In the described map data file of layer, outsourcing rectangle is in the greatest length of y-axis.

Map data file before carrying out coordinate transfer byRepresenting, wherein, the value of i and j is the most whole Number, i represents floor number, content_jFor map data file corresponding different pieces of information content, it addition, described map datum File includes: road net data file, stairs port data file, room data file and body of wall data file etc., in this case, content₁When corresponding is road net data, thenRepresent is road net data file.Carry out before coordinate transfer each Map data file, is and meets the map data file that Data Format requires such that it is able to carry out visualization display, After coordinate shifts, the map data file got still conforms to the requirement of Data Format, applies prior art, i.e. Map data file after can shifting according to coordinate realizes visual display.

After the coordinate transfer that above-mentioned coordinate branching algorithm is carried out, each map data file is(j=1, 2,3 ...), the indoor map data file of converted rear these building formed, subscript trans is the data mark after coordinate transfer Will, subscript content_jFor the different pieces of information content that each map data file is corresponding, such as road network, stairs port, room etc..Especially ,Map road net data after shifting for coordinate, usually polyline multi-line section type, the ground after the transfer of described coordinate In figure road net data, also include the annexation tables of data after coordinate transfer.

According to above-mentioned algorithm, the coordinate in each map data file and the junction point in connection relational table are carried out coordinate After transfer, according to the requirement of GIS spatial data form, by after coordinate shifts, the map data file of same type, press New corresponding map data file is gradually added to according to former data typeIn.Wherein, the type bag of map data file Including road network, room and body of wall etc., data type generally includes three kinds of different data types of point, line, surface.

When in map visualization method disclosed in the present application, for the analysis needs to GIS network based on road net data, When also obtaining connection cost between the junction point of each floor, generally described connection cost is also loaded ontoIn, in order to base InFile utilizes conventional two-dimension GIS spacial analytical method to carry out GIS analysis of network, such as, utilize the connection of road net data Cost carries out path planning.

If coordinate in this application is transformed to isometric conversion, then the scaling X in x-axis direction_scale=1, Y_scale×sin α=1.Meanwhile, for Visualization effect, the value of Δ is unsuitable and Y_scale×L_maxValue deviation excessive.Therefore, further , before carrying out coordinate transfer according to described coordinate branching algorithm, also include:

First, obtain in the described map data file of each floor before coordinate transfer, outsourcing rectangle in y-axis Long length L_max；Afterwards, it is judged that the gap length Δ of each floor gap described and Y_scale×L_maxValue between difference whether permitting In the range of Xuing, if described difference is not in described allowed band, if it is, the interval reacquiring described each floor gap is long Degree Δ, in order to carry out the calculating of coordinate transfer according to the gap length Δ of described reacquisition.

For Visualization effect, it is to avoid the value of Δ and Y_scale×L_maxValue between deviation excessive, in the application In, before carrying out coordinate transfer, obtain the greatest length L in y-axis of the outsourcing rectangle in map data file_max, and by L_maxWith Y_scale×L_maxProduct value contrast, if difference between the two is not in described allowed band, then reset respectively by user The gap length Δ of floor gap, in order to carry out coordinate transfer according to the gap length Δ of the described each floor gap reacquired Calculate, so that the map that plane oblique coordinates builds is more aesthetically pleasing.

It addition, above-mentioned coordinate branching algorithm achieves under the plane right-angle coordinate of each floor by script Discrete Distribution Map data file, be converted into the plane oblique coordinates after integration, utilize following algorithmic formula, then can realize this process Inverse process:

$\left\{\begin{array}{c}i=\mathrm{ceil}\left(\frac{y^{\&prime;}}{Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;L_{\max }+\mathrm{\&Delta;}}\right)+1\\ y=\frac{y^{\&prime;}-(i-1)\&times;(Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;L_{\max }+\mathrm{\&Delta;})}{Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}}\\ x=\frac{x^{\&prime;}-|Y_{\mathrm{scale}}\&times;\cos \mathrm{\&alpha;}\&times;y|}{X_{\mathrm{scale}}}\end{array}\right.,(0<\mathrm{\&alpha;}<\mathrm{\&pi;},\mathrm{\&alpha;}\&NotEqual;\frac{\mathrm{\&pi;}}{2};\mathrm{\&Delta;},X_{\mathrm{scale}},Y_{\mathrm{scale}}\&Element;R^{+})$

In above-mentioned two algorithmic formula, add, subtract, multiplication and division, absolute value, assignment operation are Conventional mathematical computing, ceil table Show lower bracket function, such as ceil (342.54)=342.

It addition, in map visualization method disclosed in the present application, the technical scheme disclosed in step S13, i.e. receiving After asking to map denotation, the map data file after being shifted by coordinate is overlapped the method for display, it is adaptable to carry out coordinate The processor that transfer calculates, directly displays map data file corresponding to described map denotation map and corresponding floor gap arrives The situation of annexation.In application scenes, need to use other processing terminals sometimes and carry out the visualization of map Display.In this case, map visualization method disclosed in the present application also includes:

Reception processes the Map request of terminal transmission；

Map data file corresponding for the request of described Map is changed into the data mode that described processing terminal is supported, And the map data file transmission after converting is to described processing terminal, described processing terminal carry out visualization display.

This mode, it is adaptable to carried out the situation of map visualization by other processing terminals.Wherein, described other process eventually End usually handheld terminal, such as mobile phone etc..Such as, fire fighter utilizes the visual map of mobile phones enquiring, it is possible to learn each The spatial distribution of floor, it is simple to carry out rescue measure in time.

Wherein, the data mode that described processing terminal is supported, can be picture, or other data, services, such as, and base area Figure transmission request, is converted into map to be shown picture, and by described picture transfer to mobile phone, can be shown this ground by mobile phone Figure.

When carrying out the display of map visualization in prior art, the virtual technology of utilization is higher to the requirement of hardware configuration, Therefore it is not suitable for the application of handheld terminal, is of limited application, and the map data file after the coordinate transfer in the application Substantially being still that two dimensional map data, two dimensional map data is configuring the application of relatively low handheld terminal the most widely, Therefore, map visualization method disclosed in the present application can be applied to handheld terminal, and the visualized map of formation can facilitate On handheld terminal, it is shown issue rapidly, extends the range of application of visualized map.

Current existing map visualization technology, generally includes two kinds, and a kind of is that the method utilizing virtual reality realizes, should Although the spatial distribution in each floor in the displaying same building thing that method can be vivid, but, virtual technology is unfavorable for carrying out Data analysis, and, in actual applications, compare consuming hardware resource, need higher hardware configuration to realize, it is difficult to The mainstream carrier of visualized map application, handheld terminal is widely applied；Another kind realizes the method for map visualization It is that the mode of the plane graph utilizing designated floor realizes, although the method can intuitively show the spatial distribution in a certain floor, But it is difficult to embody intuitively the connected relation of same building thing each floor gap interior, it is more difficult to carry out many buildings based on this connected relation The data query of layer integration and analysis of network, such as the path analysis of two floor gaps.

And in map visualization method disclosed in the present application, first by same building thing, the map number of each floor According to file, the programmatic way of coordinate transform is utilized to process, the two-dimension GIS map datum built by plane right-angle coordinate File, carries out coordinate transfer；If the map data file of the two dimensional form got is not the form of plane right-angle coordinate, then Prior art can be passed through, as being determined by earth ellipsoid and projection pattern, be translated into plane right-angle coordinate；Through sitting Mark transfer after, acquisition is the map data file under plane oblique coordinates, and according to certain floor gap every and floor Order is by the map data file successively migration stack of different floors, so that the indoor map data of many floors present vertical The effect of visualization that body surface reaches.This technology is for virtual reality technology, it is achieved mode is simple, it is not necessary to higher hardware Configuration, reduce map visual realize cost, and expand the range of application of map visualization, make mobile terminal etc. process eventually End also is able to realize the visualization of map.

In the application, being provided with annexation tables of data, described annexation tables of data includes the connection of each floor Point, described junction point is usually the floor junctional complex in the real space such as stair or elevator.Present invention take advantage of that this real space In annexation corresponding to floor junctional complex, the procedure treatment shifted by coordinate, this annexation is utilized plane Wire data under oblique coordinates show, and according to GIS network inquiry, the application demand of analysis, by these wire data with Road net data file in map data file, is integrated into one and has successional wire data file on logic level, Realize the map data file after the integrally exhibiting to this building, and coordinate transfer and meet the rule of human eye three-dimensional imaging Rule, stereo-effect is good, meets map demand on Visualization.And, the map data file after coordinate transfer, this The GIS data of two dimension it is still that in matter, therefore, it is possible to the inquiry of seamless support two-dimension GIS network and the function of analysis.

Accordingly, the invention also discloses a kind of map visualization device, structural representation shown in Figure 4, described Map visualization device includes: the first acquisition module 11, coordinate shift module 12 and display operation module 13, wherein,

Described first acquisition module 11, for obtaining the map data file of each floor, annexation in two-dimensional map Tables of data and coordinate transfer parameters, wherein, described map data file includes road net data file and other map data files, Described annexation tables of data includes the junction point of each floor, and described coordinate transfer parameters includes: the most corresponding x, y-axis side To scaling, coordinate transfer after oblique coordinates in x, the angle of y-axis, and the gap length of each floor gap；

Described coordinate shift module 12, for according to described coordinate transfer parameters, to the seat in described map data file The coordinate of the junction point in mark and described annexation tables of data carries out coordinate transfer, obtains the map datum literary composition after coordinate transfer Part, and the coordinate of each road net data file in the map data file after coordinate transfer and described junction point is merged into one Individual road net data file；

Described display operation module 13, after being used for obtaining map denotation request, the map datum after described coordinate is shifted File is overlapped display.

Further, described map visualization device also includes:

Second acquisition module, described second acquisition module becomes for obtaining the connection between the junction point of each floor described This, and described connection cost is carried in the road net data file after described merging.

Further, in described coordinate shift module 12, the algorithm carrying out coordinate transfer is:

$\left\{\begin{array}{c}{x}^{\&prime;}=X_{\mathrm{scale}}\&times;x+|Y_{\mathrm{scale}}\&times;\cos \mathrm{\&alpha;}\&times;y|\\ y^{\&prime;}=Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;y+(i-1)\&times;(Y_{\mathrm{scale}}\&times;\sin \mathrm{\&alpha;}\&times;L_{\max }+\mathrm{\&Delta;})\end{array}\right.,(0<\mathrm{\&alpha;}<\mathrm{\&pi;},\mathrm{\&alpha;}\&NotEqual;\frac{\mathrm{\&pi;}}{2};\mathrm{\&Delta;},X_{\mathrm{scale}},Y_{\mathrm{scale}}\&Element;R^{+};i\&Element;Z^{+})$

Wherein, x and y is the coordinate before coordinate transfer, and x ' and y ' is the coordinate after coordinate transfer, X_scaleAnd Y_scaleRespectively Representing when carrying out coordinate transfer, the most corresponding x, the scaling in y-axis direction, α is in the oblique coordinates after coordinate transfer X, the angle of y-coordinate between centers, Δ is the gap length of each floor gap, and i is floor number, L_maxEach building before shifting for coordinate In the described map data file of layer, outsourcing rectangle is in the greatest length of y-axis.

Further, described map visualization device also includes:

3rd acquisition module, the described map number of described 3rd acquisition module each floor before obtaining coordinate transfer According in file, outsourcing rectangle is at the greatest length L of y-axis_max；

Judge module, described judge module is for judging gap length Δ and the Y of described each floor gap_scale×L_maxValue Between difference whether in allowed band, if described difference is not in described allowed band, then reacquire described each floor Between gap length Δ, in order to carry out the calculating of coordinate transfer according to the gap length Δ of described reacquisition.

Further, described map visualization device also includes:

Receiver module, described receiver module is for receiving the Map request processing terminal transmission；

Transport module, props up for map data file corresponding for the request of described Map is changed into described processing terminal The data mode held, and the map data file transmission after converting is to described processing terminal, described processing terminal carrying out can Depending on changing display.

Accordingly, the invention also discloses a kind of processor, the chip of described processor is integrated with as above Figure visualization device.

Those of ordinary skill in the art are it is to be appreciated that combine the list of each example that the embodiments described herein describes Unit and algorithm steps, it is possible to being implemented in combination in of electronic hardware or computer software and electronic hardware.These functions are actually Perform with hardware or software mode, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel Each specifically should being used for can be used different methods to realize described function, but this realization is it is not considered that exceed The scope of the present invention.

Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, the system of foregoing description, The specific works process of device and unit, is referred to the corresponding process in preceding method embodiment, does not repeats them here.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, permissible Realize by another way.Such as, device embodiment described above is only schematically, such as, and described unit Dividing, be only a kind of logic function and divide, actual can have other dividing mode, the most multiple unit or assembly when realizing Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, shown or The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit Close or communication connection, can be electrical, machinery or other form.

The described unit illustrated as separating component can be or may not be physically separate, shows as unit The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the present embodiment scheme 's.

It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to It is that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.

If described function is using the form realization of SFU software functional unit and as independent production marketing or use, permissible It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is the most in other words The part contributing prior art or the part of this technical scheme can embody with the form of software product, this meter Calculation machine software product is stored in a storage medium, including some instructions with so that a computer equipment (can be individual People's computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention. And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory are deposited The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.

Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention. Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one The widest scope caused.

Claims (8)

1. a map visualization method, it is characterised in that including:

Obtain the map data file of each floor, annexation tables of data and coordinate transfer parameters in two-dimensional map, wherein, institute Stating map data file and include road net data file and other map data files, described annexation tables of data includes each The junction point of floor, described coordinate transfer parameters includes: respectively corresponding x, oblique after the transfer of the scaling in y-axis direction, coordinate X in angle coordinate system, the angle of y-axis, and the gap length of each floor gap；

According to described coordinate transfer parameters, to the company in the coordinate in described map data file and described annexation tables of data The coordinate of contact carries out coordinate transfer, obtains the map data file after coordinate transfer, and by the map datum after coordinate transfer Each road net data file and the coordinate of described junction point in file are merged into a road net data file；

After obtaining map denotation request, the map data file after being shifted by described coordinate is overlapped display；

Wherein, described according to coordinate transfer parameters, in the coordinate in described map data file and annexation tables of data The coordinate of junction point carries out the algorithm of coordinate transfer:

$\{\begin{array}{c}{x}^{\&prime;}=X_{scale}\&times;x+|Y_{scale}\&times;\cos \mathrm{\&alpha;}\&times;y|\\ y^{\&prime;}=Y_{scale}\&times;\sin \mathrm{\&alpha;}\&times;y+(i-1)\&times;(Y_{scale}\&times;\sin \mathrm{\&alpha;}\&times;L_{\max }+\mathrm{\&Delta;})\end{array},(0<\mathrm{\&alpha;}<\mathrm{\&pi;},\mathrm{\&alpha;}\&NotEqual;\frac{\mathrm{\&pi;}}{2};\mathrm{\&Delta;},X_{scale},Y_{scale}\&Element;R^{+};i\&Element;Z^{+})$

Wherein, x and y is the coordinate before coordinate transfer, x' and y' is the coordinate after coordinate transfer, X_scaleAnd Y_scaleIt is illustrated respectively in When carrying out coordinate transfer, the most corresponding x, the scaling in y-axis direction, α is x in the oblique coordinates after coordinate transfer, y-coordinate The angle of between centers, Δ is the gap length of each floor gap, and i is floor number, L_maxDescribed in each floor before shifting for coordinate In map data file, outsourcing rectangle is in the greatest length of y-axis.

Method the most according to claim 1, it is characterised in that described map visualization method also includes:

Obtain the connection cost between the junction point of each floor described, and described connection cost is carried in the road after described merging In network data file.

Method the most according to claim 1, it is characterised in that carrying out coordinate transfer according to described coordinate branching algorithm Before, also include:

Obtaining in the described map data file of each floor before coordinate transfer, outsourcing rectangle is at the greatest length L of y-axis_max；

Judge gap length Δ and the Y of described each floor gap_scale×L_maxValue between difference whether in allowed band, if Described difference not in described allowed band, then reacquires the gap length Δ of described each floor gap, in order to according to described heavy The new gap length Δ obtained carries out the calculating of coordinate transfer.

Method the most according to claim 1 and 2, it is characterised in that described map visualization method also includes:

Reception processes the Map request of terminal transmission；

Map data file corresponding for the request of described Map is changed into the data mode that described processing terminal is supported, and will Map data file transmission after conversion, to described processing terminal, is carried out visualization display by described processing terminal.

5. a map visualization device, it is characterised in that including:

First acquisition module, for obtaining the map data file of each floor in two-dimensional map, annexation tables of data and seat Mark transfer parameters, wherein, described map data file includes road net data file and other map data files, and described connection is closed Being the tables of data junction point that includes each floor, described coordinate transfer parameters includes: the most corresponding x, the pantograph ratio in y-axis direction X in oblique coordinates after the transfer of example, coordinate, the angle of y-axis, and the gap length of each floor gap；

Coordinate shift module, for according to described coordinate transfer parameters, to the coordinate in described map data file and described company The coordinate connecing the junction point in relation database table carries out coordinate transfer, obtains the map data file after coordinate transfer, and will sit Each road net data file in map data file and the coordinate of described junction point after mark transfer are merged into a road network number According to file；

Display operation module, after being used for obtaining map denotation request, the map data file after being shifted by described coordinate is folded Add display；

In described coordinate shift module, the algorithm carrying out coordinate transfer is:

$\{\begin{array}{c}{x}^{\&prime;}=X_{scale}\&times;x+|Y_{scale}\&times;\cos \mathrm{\&alpha;}\&times;y|\\ y^{\&prime;}=Y_{scale}\&times;\sin \mathrm{\&alpha;}\&times;y+(i-1)\&times;(Y_{scale}\&times;\sin \mathrm{\&alpha;}\&times;L_{\max }+\mathrm{\&Delta;})\end{array},(0<\mathrm{\&alpha;}<\mathrm{\&pi;},\mathrm{\&alpha;}\&NotEqual;\frac{\mathrm{\&pi;}}{2};\mathrm{\&Delta;},X_{scale},Y_{scale}\&Element;R^{+};i\&Element;Z^{+})$

Wherein, x and y is the coordinate before coordinate transfer, x' and y' is the coordinate after coordinate transfer, X_scaleAnd Y_scaleIt is illustrated respectively in When carrying out coordinate transfer, the most corresponding x, the scaling in y-axis direction, α is x in the oblique coordinates after coordinate transfer, y-coordinate The angle of between centers, Δ is the gap length of each floor gap, and i is floor number, L_maxDescribed in each floor before shifting for coordinate In map data file, outsourcing rectangle is in the greatest length of y-axis.

Device the most according to claim 5, it is characterised in that described map visualization device also includes:

Second acquisition module, for obtaining the connection cost between the junction point of each floor described, and adds described connection cost It is loaded in the road net data file after described merging.

Device the most according to claim 5, it is characterised in that described map visualization device also includes:

3rd acquisition module, in the described map data file of each floor before obtaining coordinate transfer, outsourcing rectangle is at y The greatest length L of axle_max；

Judge module, for judging gap length Δ and the Y of described each floor gap_scale×L_maxValue between difference whether permitting In the range of Xuing, if described difference is not in described allowed band, then reacquire the gap length Δ of described each floor gap, with Just the gap length Δ according to described reacquisition carries out the calculating of coordinate transfer.

8., according to the device described in claim 5 or 6, it is characterised in that described map visualization device, also include:

Receiver module, for receiving the Map request processing terminal transmission；

Transport module, for changing into what described processing terminal was supported by map data file corresponding for the request of described Map Data mode, and the map data file transmission after converting is to described processing terminal, described processing terminal visualize Display.