CN109062934A - A kind of searching method, device and the mobile terminal of measure figure spot - Google Patents
A kind of searching method, device and the mobile terminal of measure figure spot Download PDFInfo
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Abstract
The embodiment of the invention provides searching method, device and the mobile terminal of a kind of measure figure spot, which is applied to mobile terminal, specially carries out buffer finish blasting calculating as the center of circle, with previously given radius using the current location of user, obtains geometric surface object；The geographical coordinate of geometric surface object is converted into plane coordinates, obtain in face of as；Calculate the minimum circumscribed rectangle for facing elephant；Candidate measure figure spot collection is filtered out according to minimum circumscribed rectangle and preset base map figure spot；It calculates candidate measure figure spot and concentrates distance of each measure figure spot relative to the center of circle, obtain multiple distance values；Using measure figure spot corresponding to distance value the smallest in multiple distance values as Target Measures figure spot.By determining that search of the onsite user quickly to measure figure spot may be implemented in Target Measures figure spot, and nearest measure figure spot can be arrived at as early as possible according to result, to improve the efficiency inspected for acceptance.
Description
Technical field
The present invention relates to conservation technology fields, more particularly to searching method, device and the shifting of a kind of measure figure spot
Dynamic terminal.
Background technique
Carry out the important annual work that water and soil conservation supervision and check are water administration authorities, and water-and-soil conservation measures is implemented
Situation is one of main contents of supervision and inspection work.
Water-and-soil conservation measures refers to for prevention soil and water loss, protection, improvement and rationally using water and soil resources, improves ecological ring
The general name of the technical measures such as engineering, plant and farming that border is taken and management measure.In water and soil conservation, pass through water and soil
Comprehensive treatment overall planning and using small watershed as the implementary plan of unit is kept, principles handle of setting up defences etc. according to adaptation to local conditions, because of evil
Soil erosion management implements on specific plot, and is reflected on corresponding graph, forms measure figure spot.Measure figure spot is to be set
Meter is constructed, the basic unit of maintenance management and supervision and check, and search, the positioning of measure figure spot are that supervision and check are carried out at scene
The necessary condition of work.
In recent years, with the sustained improvement of water and soil conservation supervision and check mode, mobile inspect for acceptance is increasingly becomed
The usual way of supervision and inspection work.Mobile inspect for acceptance of production and construction project refers to that water administration authorities technical staff is hand-held
Mobile terminal carries out the work inspected for acceptance to project scene, and wherein mobile terminal refers to built-in " national water and soil conservation key project
The smart phone or tablet computer of mobile system of inspecting for acceptance ".
Mobile system of inspecting for acceptance includes four modules: field operation prepares, site inspection is checked and accepted, in interior industry editor and data
It passes.Field operation prepares mainly to determine items for acceptance to be checked, from data center's download items information (including Fundamental Geographic Information System number
According to, Project Areas, project section, measure figure spot, DEM, remote sensing image etc.)；Site inspection, which is checked and accepted, mainly consults project information, core
Real water-and-soil conservation measures performance, and information (including photo, video, audio, hand-written notes etc.) are inspected for acceptance in on-the-spot record；
Interior industry editor mainly arranges the information obtained in the site inspection course of receiving, forms conclusion of inspecting for acceptance；In data
Biography is that the procedural information that will be inspected for acceptance and conclusion pass back to data center.
It inspects for acceptance however, to realize to the movement of water-and-soil conservation measures, first has to be realized on mobile terminals to given
The search, positioning of measure figure spot in range, so that user can determine distance of the corresponding measure figure spot relative to oneself, and according to
Distance, which is rushed to as early as possible at nearest measure figure spot, inspects for acceptance.
Summary of the invention
In view of this, the present invention provides searching method, device and the mobile terminals of a kind of measure figure spot, so as in movement
The search to measure figure spot is realized in terminal, to improve the efficiency inspected for acceptance.
To solve the above-mentioned problems, the invention discloses a kind of searching methods of measure figure spot, are applied to mobile terminal, institute
State searching method comprising steps of
Buffer finish blasting calculating is carried out as the center of circle, with previously given radius using the current location of user, obtains geometric surface pair
As；
The geographical coordinate of the geometric surface object is converted into plane coordinates, obtain in face of as；
Calculate the minimum circumscribed rectangle for facing elephant；
Candidate measure figure spot collection is filtered out according to the minimum circumscribed rectangle and preset base map figure spot；
It calculates the candidate measure figure spot and concentrates distance of each measure figure spot relative to the center of circle, obtain multiple distances
Value；
Using measure figure spot corresponding to distance value the smallest in the multiple distance value as Target Measures figure spot.
Optionally, the distance is pseudo-distance.
Optionally, the calculating candidate measure figure spot concentrates distance of each measure figure spot relative to the center of circle,
Comprising steps of
Calculate distance excessively in, judge the topological relation of each the measure figure spot and the center of circle；
If the measure figure spot includes the center of circle, the measure figure spot comprising the center of circle is arranged as the target
Apply figure spot.
Optionally, the calculating candidate measure figure spot concentrates distance of each measure figure spot relative to the center of circle,
It further comprises the steps of:
When judging that the measure figure spot includes the center of circle, then stop calculating the follow-up figure spot concentration other measures
Distance of the figure spot relative to the center of circle.
A kind of searcher of measure figure spot is additionally provided, mobile terminal is applied to, described search device includes:
Buffer finish blasting module, for carrying out buffer finish blasting as the center of circle, with previously given radius using the current location of user
It calculates, obtains geometric surface object；
Coordinate transferring, for the geographical coordinate of the geometric surface object to be converted to plane coordinates, obtain in face of as；
Mbr computing module, for calculating the minimum circumscribed rectangle for facing elephant；
Overlap analysis mode, for filtering out candidate measure figure according to the minimum circumscribed rectangle and preset base map figure spot
Spot collection；
Distance calculation module concentrates each measure figure spot relative to the center of circle for calculating the candidate measure figure spot
Distance obtains multiple distance values；
As a result output module, for using measure figure spot corresponding to distance value the smallest in the multiple distance value as mesh
Mark measure figure spot.
Optionally, the distance is pseudo-distance.
Optionally, the distance calculation module includes:
Topological judging unit, for calculate distance excessively in, judge opening up for each measure figure spot and the center of circle
Flutter relationship；
Direct output unit, if including the center of circle for the measure figure spot, by the measure comprising the center of circle
Figure spot is as the Target Measures figure spot.
Optionally, the distance calculation module, further includes:
Control unit is interrupted, for when judge that the measure figure spot includes the center of circle, then stopping calculating described subsequent arrange
It applies figure spot and concentrates distance of the other measures figure spot relative to the center of circle.
In addition, another mobile terminal, is provided with searcher as described above.
In addition, providing a kind of mobile terminal again, a processor and memory are included at least, wherein the memory
It is stored with computer program, the computer program can be executed by the processor, so that the existing following step of the mobile terminal
It is rapid:
Buffer finish blasting calculating is carried out as the center of circle, with previously given radius using the current location of user, obtains geometric surface pair
As；The geographical coordinate of the geometric surface object is converted into plane coordinates, obtain in face of as；It is outer to calculate the minimum in face of elephant
Connect rectangle；Candidate measure figure spot collection is filtered out according to the minimum circumscribed rectangle and preset base map figure spot；Calculate the candidate
Measure figure spot concentrates distance of each measure figure spot relative to the center of circle, obtains multiple distance values；By the multiple distance value
In measure figure spot corresponding to the smallest distance value as Target Measures figure spot.
It can be seen from the above technical proposal that the present invention provides searching method, device and the movements of a kind of measure figure spot
Terminal, the searching method be applied to mobile terminal, specially using the current location of user as the center of circle, with previously given radius into
Row buffering analytical calculation obtains geometric surface object；The geographical coordinate of geometric surface object is converted into plane coordinates, is faced
As；Calculate the minimum circumscribed rectangle for facing elephant；Candidate measure figure is filtered out according to minimum circumscribed rectangle and preset base map figure spot
Spot collection；It calculates candidate measure figure spot and concentrates distance of each measure figure spot relative to the center of circle, obtain multiple distance values；By it is multiple away from
From measure figure spot corresponding to distance value the smallest in value as Target Measures figure spot.By determining that Target Measures figure spot can be real
Existing onsite user's quickly search to measure figure spot, and nearest measure figure spot can be arrived at as early as possible according to result, to improve
The efficiency inspected for acceptance.
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 step flow chart of the searching method of measure figure spot provided in an embodiment of the present invention；
Fig. 2 is a kind of structural block diagram of the searcher of measure figure spot provided in an embodiment of the present invention；
Fig. 3 is a kind of structural frames block diagram of mobile terminal provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of step flow chart of the searching method of measure figure spot provided in an embodiment of the present invention.
Searching method provided in this embodiment is applied on mobile terminal, for searching mobile terminal to the realization of measure figure spot
Rope and positioning.The mobile terminal can be understood as smart phone or tablet computer configured with engineering supervision Acceptance Test System, the work
Journey is inspected for acceptance the mobile system of inspecting for acceptance of the preferably national water and soil conservation key project of system.
The mobile system of inspecting for acceptance of country's water and soil conservation key project is a kind of computer application software, for country
Water and soil conservation major project carries out site inspection examination, including " field operation preparation ", " site inspection examination ", " interior industry editor "
" data upload " four big functional modules, concrete function do not do expansion description herein.
In water and soil conservation, advised by Comprehensive Control of Soil Conservation overall planning and by the implementation of unit of small watershed
It draws, principles of setting up defences etc. according to adaptation to local conditions, because of evil implement to soil erosion management on specific plot, and are reflected in corresponding graph
On, referred to as measure figure spot.
Shown in referring to Fig.1, the searching method of the measure figure spot specifically comprises the following steps:
S1: according to the current location computational geometry of user face as.
Specially using the current location of user as the center of circle, and buffer finish blasting calculating is carried out with previously given radius, thus
Obtain corresponding geometric surface object.
Current location refers to the position of the user determined using the mobile terminal of this programme by global position system；Here
Given radius can be solved by way of inputting corresponding parameter to mobile terminal, be also possible to preset default
Value.
S2: being coordinately transformed geometric surface object, obtain in face of as.
After obtaining corresponding geometric surface object, geometric surface object is coordinately transformed, i.e., it will be under geographic coordinate system
Geometric surface object transformation be plane coordinate system under in face of as.
S3: the minimum circumscribed rectangle for facing elephant is calculated.
Here minimum circumscribed rectangle is preferably square, can be enclosed in using current location as the center of circle, with given half
Diameter is the smallest rectangle of the circle of radius.Here it calculates the outsourcing rectangle and refers to the position for calculating the outsourcing rectangle and determining, range
Etc. parameters, range parameter include the data such as perimeter and area.
S4: candidate measure figure spot collection is filtered out according to minimum circumscribed rectangle and base map figure spot.
Here base map figure spot, which refers to, inspects for acceptance system in " field operation preparation " stage in movement, downloads to from database
Some area or predeterminable area measure figure spot, that is, the water-and-soil conservation measures figure spot inspected for acceptance.By will most
Small boundary rectangle is overlapped with map figure spot, and a certain number of measure figure spots can be selected from map figure spot, i.e., with this
There are the measure figure spots of overlapping range for minimum circumscribed rectangle.
After selecting a certain number of measure figure spots, using the measure figure spot selected as candidate measure figure spot collection.
If the minimum circumscribed rectangle with map figure spot is superimposed does not select any measure figure spot, do not do any place
Reason, specially back to the operation for facing elephant according to the current location computational geometry of user.
S5: it calculates candidate measure figure spot and concentrates position of each measure figure spot relative to the center of circle.
Since the center of circle is substantially the current location of user, essence is to calculate candidate's measure figure spot to concentrate often here
Position of a measure figure spot relative to user, obtains multiple distance values.Specially counted using the library GDAL/OGR and GEOS of open source
Calculate these distance values.
When calculating distance value of each measure figure spot relative to the center of circle, which can be pseudo-distance, not extract square root, because
It is intermediate variable for calculated result, is not output result.
GDAL:(Geospatial Data Abstraction Library, geographical spatial data abstraction library) be one
Open source raster spatial data transformation warehouse under X/MIT permission agreement, it expressed using abstract data model supported it is various
File format；
OGR: being a branch of GDAL project, and function is similar with GDAL, and only it provides the support to vector data.
GEOS:(Geometry Engine-Open Source, geometric object engine of increasing income) it is the geometric form increased income
The topological relation of shape operates utility library, briefly, exactly judges between two geometries relationship and to two geometries
It is operated to form the library of new geometry.
Specifically, each specific measure figure spot is concentrated to work as relative to the center of circle, that is, user in the candidate measure figure spot of calculating
When the distance value of front position, topological relation of the current measure figure spot relative to the center of circle is first determined whether, if the two does not include, benefit
The distance value of the two is calculated with corresponding range formula；If current measure figure spot includes the center of circle, i.e. the measure figure spot location
Domain covers the center of circle, then directly using current measure figure spot as Target Measures figure spot.
Simultaneously as having confirmed target figure spot at this time, therefore, current measure figure spot is being determined by topological relation
When comprising the center of circle, then stops the calculating to other measures figure spot relative to the distance value in the center of circle, can be saved by this measure
Save corresponding computing resource.
S6: Target Measures figure spot is found out according to obtained multiple distance values.
Goal measure figure spot refers to the nearest measure figure spot of the current distance apart from user, is that user currently needs
It arrives at and carries out site inspection check mesures icon.After obtaining above-mentioned multiple distance values, candidate's measure figure spot can be specified
Distance of each measure figure spot relative to user is concentrated, being therefrom compared i.e. can determine that apart from the shortest measure figure of user
Spot, this measure figure spot are above-mentioned Target Measures figure spot.
It can be seen from the above technical proposal that this application provides a kind of searching method of measure figure spot, the searching method
Applied to mobile terminal, buffer finish blasting calculating is specially carried out as the center of circle, with previously given radius using the current location of user,
Obtain geometric surface object；The geographical coordinate of geometric surface object is converted into plane coordinates, obtain in face of as；It calculates in face of elephant most
Small boundary rectangle；Candidate measure figure spot collection is filtered out according to minimum circumscribed rectangle and preset base map figure spot；Calculate candidate measure
Figure spot concentrates distance of each measure figure spot relative to the center of circle, obtains multiple distance values；By distance the smallest in multiple distance values
The corresponding measure figure spot of value is as Target Measures figure spot.By determining that it is quickly right that onsite user may be implemented in Target Measures figure spot
The search of measure figure spot, and nearest measure figure spot can be arrived at as early as possible according to result, to improve the efficiency inspected for acceptance.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
Embodiment two
Fig. 2 is a kind of structural block diagram of the searcher of measure figure spot provided in an embodiment of the present invention.
Referring to shown in Fig. 2, searcher provided in this embodiment is applied on mobile terminal, for making mobile terminal to arranging
It applies figure spot and realizes search and positioning, the searcher of the measure figure spot specifically includes buffer finish blasting module 10, coordinate transferring
20, Mbr computing module 30, overlap analysis mode 40, distance calculation module 50 and result output module 60.
Buffer finish blasting module be used for according to the current location computational geometry of user face as.
Specially using the current location of user as the center of circle, and buffer finish blasting calculating is carried out with previously given radius, thus
Obtain corresponding geometric surface object.
Current location refers to the position of the user determined using the mobile terminal of this programme by global position system；Here
Given radius can be solved by way of inputting corresponding parameter to mobile terminal, be also possible to preset default
Value.
Coordinate transferring for being coordinately transformed to geometric surface object, obtain in face of as.
After obtaining corresponding geometric surface object, geometric surface object is coordinately transformed, i.e., it will be under geographic coordinate system
Geometric surface object transformation be plane coordinate system under in face of as.
Mbr computing module is used to calculate the minimum circumscribed rectangle in face of elephant.
Here minimum circumscribed rectangle is preferably square, can be enclosed in using current location as the center of circle, with given half
Diameter is the smallest rectangle of the circle of radius.Here it calculates the outsourcing rectangle and refers to the position for calculating the outsourcing rectangle and determining, range
Etc. parameters.
Overlap analysis mode is used to filter out candidate measure figure spot collection according to minimum circumscribed rectangle and base map figure spot.
Here base map figure spot, which refers to, inspects for acceptance system in " field operation preparation " stage in movement, downloads to from database
Some area or predeterminable area measure figure spot, that is, the water-and-soil conservation measures figure spot inspected for acceptance.By will most
Small boundary rectangle is overlapped with map figure spot, and a certain number of measure figure spots can be selected from map figure spot, i.e., with this
There are the measure figure spots of overlapping range for minimum circumscribed rectangle.
After selecting a certain number of measure figure spots, using the measure figure spot selected as candidate measure figure spot collection.
If the minimum circumscribed rectangle with map figure spot is superimposed does not select any measure figure spot, do not do any place
Reason, specially back to the operation for facing elephant according to the current location computational geometry of user.
Distance calculation module concentrates position of each measure figure spot relative to the center of circle for calculating candidate measure figure spot.
Since the center of circle is substantially the current location of user, essence is to calculate candidate's measure figure spot to concentrate often here
Position of a measure figure spot relative to user, obtains multiple distance values.Specially counted using the library GDAL/OGR and GEOS of open source
Calculate these distance values.
When calculating distance value of each measure figure spot relative to the center of circle, which can be pseudo-distance, not extract square root, because
It is intermediate variable for calculated result, is not output result.
Specifically, distance calculation module specifically includes topological judging unit and direct output unit, arranges calculating candidate
When applying the distance value that figure spot concentrates each specific measure figure spot relative to the center of circle i.e. current location of user, topological judging unit
For judging topological relation of the current measure figure spot relative to the center of circle, if the two does not include, corresponding range formula is utilized
Calculate the distance value of the two；If current measure figure spot includes the center of circle, i.e. the measure figure spot region covers the center of circle, then directly
It connects using current measure figure spot as Target Measures figure spot.
The module further includes interrupting control unit, due to having confirmed target figure spot at this time, interrupt control unit
For when topological judging unit determines that current measure figure spot includes the center of circle by topological relation, then stopping to other measures
Calculating of the figure spot relative to the distance value in the center of circle can save corresponding computing resource by this measure.
As a result output module is used to find out Target Measures figure spot according to obtained multiple distance values.
Goal measure figure spot refers to the nearest measure figure spot of the current distance apart from user, is that user currently needs
Arrive at and carry out the measure icon of site inspection examination.After obtaining above-mentioned multiple distance values, candidate's measure figure can be specified
Spot concentrates distance of each measure figure spot relative to user, and being therefrom compared i.e. can determine that apart from the shortest measure figure of user
Spot, this measure figure spot are above-mentioned Target Measures figure spot.
It can be seen from the above technical proposal that this application provides a kind of searcher of measure figure spot, the searcher
Applied to mobile terminal, buffer finish blasting calculating is specially carried out as the center of circle, with previously given radius using the current location of user,
Obtain geometric surface object；The geographical coordinate of geometric surface object is converted into plane coordinates, obtain in face of as；It calculates in face of elephant most
Small boundary rectangle；Candidate measure figure spot collection is filtered out according to minimum circumscribed rectangle and preset base map figure spot；Calculate candidate measure
Figure spot concentrates distance of each measure figure spot relative to the center of circle, obtains multiple distance values；By distance the smallest in multiple distance values
The corresponding measure figure spot of value is as Target Measures figure spot.By determining that it is quickly right that onsite user may be implemented in Target Measures figure spot
The search of measure figure spot, and nearest measure figure spot can be arrived at as early as possible according to result, to improve the efficiency inspected for acceptance.
Embodiment three
A kind of mobile terminal is present embodiments provided, which is provided with a kind of searcher of measure figure spot, should
Device is specifically used for carrying out buffer finish blasting calculating as the center of circle, with previously given radius using the current location of user, obtains geometry
In face of as；The geographical coordinate of geometric surface object is converted into plane coordinates, obtain in face of as；Calculate the external square of minimum in face of elephant
Shape；Candidate measure figure spot collection is filtered out according to minimum circumscribed rectangle and preset base map figure spot；Candidate measure figure spot is calculated to concentrate
Distance of each measure figure spot relative to the center of circle, obtains multiple distance values；It will be corresponding to distance value the smallest in multiple distance values
Measure figure spot as Target Measures figure spot.By determining that onsite user may be implemented quickly to measure figure spot in Target Measures figure spot
Search, and nearest measure figure spot can be arrived at as early as possible according to result, to improve the efficiency inspected for acceptance.
Example IV
A kind of mobile terminal is present embodiments provided, which includes at least one processor 101 and memory
102, and including the data/address bus 103 for connecting processor, memory, as shown in Figure 3.
The memory is stored with computer program, and processor using computer program for being run, so as to reality
Existing following function:
Buffer finish blasting calculating is carried out as the center of circle, with previously given radius using the current location of user, obtains geometric surface pair
As；The geographical coordinate of geometric surface object is converted into plane coordinates, obtain in face of as；Calculate the minimum circumscribed rectangle for facing elephant；
Candidate measure figure spot collection is filtered out according to minimum circumscribed rectangle and preset base map figure spot；Candidate measure figure spot is calculated to concentrate each
Distance of the measure figure spot relative to the center of circle, obtains multiple distance values；It will be arranged corresponding to distance value the smallest in multiple distance values
Figure spot is applied as Target Measures figure spot.
By determining that search of the onsite user quickly to measure figure spot may be implemented in Target Measures figure spot, and can be according to knot
Fruit arrives at nearest measure figure spot as early as possible, to improve the efficiency inspected for acceptance.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Technical solution provided by the present invention is described in detail above, specific case used herein is to this hair
Bright principle and embodiment is expounded, method of the invention that the above embodiments are only used to help understand and its
Core concept；At the same time, for those skilled in the art, according to the thought of the present invention, in specific embodiment and application
There will be changes in range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of searching method of measure figure spot, be applied to mobile terminal, which is characterized in that described search method comprising steps of
Buffer finish blasting calculating is carried out as the center of circle, with previously given radius using the current location of user, obtains geometric surface object；
The geographical coordinate of the geometric surface object is converted into plane coordinates, obtain in face of as；
Calculate the minimum circumscribed rectangle for facing elephant；
Candidate measure figure spot collection is filtered out according to the minimum circumscribed rectangle and preset base map figure spot；
It calculates the candidate measure figure spot and concentrates distance of each measure figure spot relative to the center of circle, obtain multiple distance values；
Using measure figure spot corresponding to distance value the smallest in the multiple distance value as Target Measures figure spot.
2. searching method as described in claim 1, which is characterized in that the distance is pseudo-distance.
3. searching method as described in claim 1, which is characterized in that the calculating candidate measure figure spot concentration is each arranged
Distance of the figure spot relative to the center of circle is applied, comprising steps of
Calculate distance excessively in, judge the topological relation of each the measure figure spot and the center of circle；
If the measure figure spot includes the center of circle, using the measure figure spot comprising the center of circle as the Target Measures figure
Spot.
4. searching method as claimed in claim 3, which is characterized in that the calculating candidate measure figure spot concentration is each arranged
Distance of the figure spot relative to the center of circle is applied, is further comprised the steps of:
When judging that the measure figure spot includes the center of circle, then stop calculating the follow-up figure spot concentration other measures figure spot
Distance relative to the center of circle.
5. a kind of searcher of measure figure spot, it is applied to mobile terminal, which is characterized in that described search device includes:
Buffer finish blasting module, for carrying out buffer finish blasting calculating as the center of circle, with previously given radius using the current location of user,
Obtain geometric surface object；
Coordinate transferring, for the geographical coordinate of the geometric surface object to be converted to plane coordinates, obtain in face of as；
Mbr computing module, for calculating the minimum circumscribed rectangle for facing elephant；
Overlap analysis mode, for filtering out candidate measure figure spot according to the minimum circumscribed rectangle and preset base map figure spot
Collection；
Distance calculation module, for calculate the candidate measure figure spot concentrate each measure figure spot relative to the center of circle away from
From obtaining multiple distance values；
As a result output module, for being arranged using measure figure spot corresponding to distance value the smallest in the multiple distance value as target
Apply figure spot.
6. searcher as claimed in claim 5, which is characterized in that the distance is pseudo-distance.
7. searcher as claimed in claim 5, which is characterized in that the distance calculation module includes:
Topological judging unit, for calculate distance excessively in, judge the topology pass in each measure figure spot and the center of circle
System；
Direct output unit, if including the center of circle for the measure figure spot, by the measure figure spot comprising the center of circle
As the Target Measures figure spot.
8. search 7 as claimed in claim, which is characterized in that the distance calculation module, further includes:
Control unit is interrupted, for when judging that the measure figure spot includes the center of circle, then stopping calculating the follow-up figure
Spot concentrates distance of the other measures figure spot relative to the center of circle.
9. a kind of mobile terminal, which is characterized in that be arranged just like the described in any item searchers of claim 5~8.
10. a kind of mobile terminal, which is characterized in that include at least a processor and memory, wherein the memory storage
There is computer program, the computer program can be executed by the processor, so that the mobile terminal shows following steps:
Buffer finish blasting calculating is carried out as the center of circle, with previously given radius using the current location of user, obtains geometric surface object；It will
The geographical coordinate of the geometric surface object is converted to plane coordinates, obtain in face of as；Calculate the external square of minimum in face of elephant
Shape；Candidate measure figure spot collection is filtered out according to the minimum circumscribed rectangle and preset base map figure spot；Calculate the candidate measure
Figure spot concentrates distance of each measure figure spot relative to the center of circle, obtains multiple distance values；By in the multiple distance value most
Measure figure spot is as Target Measures figure spot corresponding to small distance value.
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