CN103456233A - Method and system for searching interest points based on electronic map - Google Patents
Method and system for searching interest points based on electronic map Download PDFInfo
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- CN103456233A CN103456233A CN201210167903XA CN201210167903A CN103456233A CN 103456233 A CN103456233 A CN 103456233A CN 201210167903X A CN201210167903X A CN 201210167903XA CN 201210167903 A CN201210167903 A CN 201210167903A CN 103456233 A CN103456233 A CN 103456233A
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Abstract
An embodiment of the invention provides a method and a system for searching interest points based on an electronic map. The method includes that a mobile terminal sends current position coordinates of the mobile terminal to a geographic information server; the geographic information server searches coordinates of interest points in a preset range of the current position coordinates of the mobile terminal and returns the coordinates of the interest points to the mobile terminal; the mobile terminal calculates a route from the current position coordinates of the mobile terminal to the coordinates of the interest points, and displays the route in the electronic map thereof. By the method and the system, when a user uses the electronic map for searching nearby interest points, position indication of the nearby interest points can be provided, a route for reaching a destination can also be provided, the user can supplement interest point information not recorded yet on the electronic map into the electronic map, and a complete urban interest-point geographic information database can be established in a user contribution mode.
Description
Technical field
Embodiment of the present invention relates to the geographical information technology field, more specifically, relates to a kind of method and system of searching point of interest based on electronic chart.
Background technology
Electronic chart is numerical map, is to utilize computer technology the map of storing and consulting with digital form.Electronic chart stores the method for information, the general vector mode image storage of using, enlarging or reducing or the rotation of map scale and do not affect display effect, the early application bit map type stores, map scale can not zoom in or out, and hyundai electronics map software general using Geographic Information System stores and transmit map datum.
Point of interest (Point of Interest is called for short POI) is a class content of mark facility in electronic chart.Such as, the facilities such as the restaurant in the navigation of electronic map map, hotel, tourist attractions, hospital, parking lot, public lavatory, store, can be the POI in electronic chart.
Point of interest in city is the necessary component of urban infrastructure now, can be convenient for people to life, meet the physiological function needs, and be one of places of cultural interest as the point of interest of urban architecture itself.Yet, due to the difference of the zones of different level of economic development in city, point of interest supply level difference is also larger, ubiquity has the problem that is difficult to search out point of interest at present.And the point of interest layout in some cities is unreasonable, lacks unified planning, spacing and position be not science, the more difficult point of interest that finds in bustling location also.Also have a lot of cities to lack perfect point of interest guiding tag system, some point of interest locations are hidden, and do not identify guiding tablet, cause point of interest resource scarcity on the one hand, but have on the other hand that some points of interest are idle or utilization factor is very low.
In current electronic chart, the user can be by all point of interest location information recorded in electronic map database in the some cities of point of interest keyword query.Such as, the user can be by the public lavatory positional information in " public lavatory " inquiry electronic map database.
Yet, in prior art this on electronic chart the method for searching for point of interest key word, geographical location information and user's positional information can not be carried out associatedly, can not provide for the user service of location-based searching for point of interest.
And, in the gis database that electronic chart is used, the information such as means of transportation, communal facility, large-scale retail shop, government bodies are than horn of plenty, and it is less usually to be attached to the point of interest location information of other buildings such as public lavatory, parking lot etc.
Not only, in this, the information in current gis database is magnanimity, on macroscopic view, is difficult to above-mentioned information is supplemented in time.
Summary of the invention
Embodiment of the present invention proposes a kind of method of searching point of interest based on electronic chart, and location-based searching for point of interest service can be provided.
Embodiment of the present invention proposes the system of based on electronic chart, searching point of interest, and location-based searching for point of interest service can be provided.
The concrete scheme of embodiment of the present invention is as follows:
A kind of method of searching point of interest based on electronic chart, the method comprises:
Mobile terminal sends the mobile terminal current position coordinates to geographic information server;
According to this mobile terminal current position coordinates, the coordinate of interest points that the geographic information server retrieval is interior apart from described mobile terminal current position coordinates preset range, and return to described coordinate of interest points to mobile terminal;
Mobile terminal calculates the route from described mobile terminal current position coordinates to described coordinate of interest points, and shows this route in the electronic chart of mobile terminal.
A kind of system of searching point of interest based on electronic chart, this system comprises mobile terminal and geographic information server, wherein:
Mobile terminal, for sending the mobile terminal current position coordinates to geographic information server;
Geographic information server, for according to this mobile terminal current position coordinates, retrieve the coordinate of interest points interior apart from described mobile terminal current position coordinates preset range, and return to described coordinate of interest points to mobile terminal;
Described mobile terminal, be further used for calculating the route from described mobile terminal current position coordinates to described coordinate of interest points, and show this route in the electronic chart of mobile terminal.
From technique scheme, can find out, in embodiment of the present invention, mobile terminal sends the mobile terminal current position coordinates to geographic information server; Geographic information server is according to this mobile terminal current position coordinates, and retrieval is apart from the coordinate of interest points in mobile terminal current position coordinates preset range, and returns to coordinate of interest points to mobile terminal; Mobile terminal calculates the route from the mobile terminal current position coordinates to coordinate of interest points, and shows this route in the electronic chart of mobile terminal.As can be seen here, after the application embodiment of the present invention, can be when the user use electronic chart finding nearby point of interest, near the point of interest location indication providing, and the route that arrives destination is provided, thus realize location-based searching for point of interest service.
And, embodiment of the present invention can also allow the user by electronic chart still Unrecorded interest point information add in electronic chart, contribute by the user that pattern is common builds complete city point of interest geographic information database.
The accompanying drawing explanation
Fig. 1 is for searching the method flow diagram of point of interest according to embodiment of the present invention based on electronic chart;
Fig. 2 is for searching the system construction drawing of point of interest according to embodiment of the present invention based on electronic chart.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
In embodiment of the present invention, on the one hand can be when the user use electronic chart finding nearby point of interest, near the point of interest location indication providing, and be provided to the route that reaches destination from current location to the user; Can allow on the other hand the user by electronic chart still Unrecorded interest point information add in electronic chart, contribute the pattern cooperative cooperating by the user, jointly build together city point of interest geographic information database.
Fig. 1 is for searching the method flow diagram of point of interest according to embodiment of the present invention based on electronic chart.
As shown in Figure 1, the method comprises:
Step 101: mobile terminal sends the mobile terminal current position coordinates to geographic information server.
Here, can obtain by specific mobile terminal positioning technology the current location information (latitude and longitude coordinates) of mobile phone users, and the mobile terminal current position coordinates is sent to geographic information server.
The mobile terminal positioning technology that is applicable to embodiment of the present invention can have multiple.Such as, can adopt the locator meams based on GPS, also can adopt the architecture mode of movement-based operation network.Locator meams based on GPS is to utilize GPS locating module on mobile terminal that the position signalling of oneself is sent to the backstage, location to realize the mobile terminal location.Architecture is to utilize base station to determine mobile terminal locations to the measuring and calculating distance of mobile terminal.
Architecture does not need mobile terminal to have the GPS station-keeping ability, but positioning precision largely depends on the distribution of base station and the size of coverage, have time error to surpass one kilometer, and the precision of GPS location is higher.
Step 102: according to this mobile terminal current position coordinates, geographic information server retrieval is apart from the coordinate of interest points in mobile terminal current position coordinates preset range, and returns to coordinate of interest points to mobile terminal.
Preserve the coordinate of interest points data message in whole city in the background data base of geographic information server.After geographical information server receives the mobile terminal current position coordinates, at first in background data base, retrieval, apart from the coordinate of interest points in this mobile terminal current position coordinates preset range, then returns to mobile terminal the coordinate of interest points retrieved.
Wherein, this preset range size can be edited adjusting.Such as, distance can be set as 500 meters, 400 meters, 300 meters, and 200 meters, 100 meters or 50 meters, etc.
When the point of interest retrieved at this preset range have a plurality of in, can be only to the mobile terminal layback nearest coordinate of interest points, also can return to the whole coordinate of interest points that retrieve in this preset range to mobile terminal.
Step 103: mobile terminal calculates the route from the mobile terminal current position coordinates to coordinate of interest points, and shows this route in the electronic chart of mobile terminal.
Mobile terminal is received the coordinate of interest points returned from geographic information server, at first calculate the route from the mobile terminal current position coordinates to coordinate of interest points, then in the electronic chart of mobile terminal, show this route.
When the coordinate of interest points retrieved has when a plurality of, be preferably based on these coordinate of interest points and identify respectively these points of interest in electronic chart, and the highlighted nearest point of interest of distance moving terminal current position coordinates that demonstrates, and calculate the route from mobile terminal current position coordinates nearest coordinate of interest points to distance moving terminal current position coordinates, then in the electronic chart of mobile terminal, show this route.
Alternatively, when the coordinate of interest points retrieved has when a plurality of, many routes of all these coordinate of interest points can also calculating from the mobile terminal current position coordinates to electronic chart, then demonstrate all routes in the electronic chart of mobile terminal, to be selected voluntarily the track route of hobby by the user.
Particularly, can adopt the open source software MITAB that does not rely on any operating system to be processed electronic map data, realize the search of the minimal path from the mobile terminal current position coordinates to coordinate of interest points in conjunction with the A-Star algorithm.And, after calculating route, show this route in electronic chart, thereby mobile phone users can be known track route at a glance.
Below having enumerated in detail some concrete path search algorithms and electronic chart Software tool is described in detail embodiment of the present invention.It will be appreciated by those of skill in the art that this enumerating is only exemplary, and the scope of application be not used in embodiment of the present invention is limited.
Preferably, when mobile phone users roams into strange local time, find that there is the point of interest that not yet is recorded to geographic information server, at first the user can identify this point of interest in this electronic chart, and then by this point of interest, the position coordinates in electronic chart sends to geographic information server and preserved.Now, this position coordinates that just has been recorded to the point of interest of geographic information server is the current position coordinates that mobile terminal roams into.
Alternatively, when mobile phone users roams into strange place, while finding that there is the point of interest that not yet is recorded to geographic information server, also can in electronic chart, not identify this point of interest, be preserved but directly the position coordinates of this point of interest is sent to geographic information server.
Preferably, for point of interest validity is identified, geographic information server, when preserving the position coordinates of this point of interest, is further preserved for identifying the geography information mode bit of point of interest validity.
The geography information mode bit is for identifying point of interest validity.Specifically can comprise: the geography information mode bit that the geography information mode bit that the geography information mode bit that sign point of interest validity is pending state, sign point of interest validity are effective status or sign point of interest validity are disarmed state, etc.
Such as: a geography information mode bit is set, and wherein this geography information mode bit is 0 expression " pending trial "; This geography information mode bit is 1 expression " effectively ", and this geography information mode bit is 2 expression engineering noises, etc.
In one embodiment, the user can also send about the review information to a certain point of interest to geographic information server by mobile terminal; Geographic information server arranges the geography information mode bit corresponding to this point of interest according to this point of interest review information.Geographic information server, when preserving the point of interest review information of this point of interest, is further preferably preserved review information submitter's user ID.
The user sends coordinate of interest points and the point of interest review information that not yet is recorded to geographic information server to geographic information server by mobile terminal, own original content can be showed or is offered other users by internet platform, thereby realize sharing interest point information by user-generated content (UGC, User Generated Content) pattern.
Preferably, when geographical information server is set to disarmed state according to the point of interest review information corresponding to the geography information mode bit of this point of interest, send the electronic chart that is concealed with this point of interest to mobile terminal.
Can specifically implement the method for based on electronic chart, searching point of interest that embodiment of the present invention proposes by various ways in fact.
Such as, the application programming interfaces that can follow certain standard are written as the plug-in card program be installed in electronic map of mobile terminal, also it can be encapsulated as to application program and download voluntarily use for the user.When being written as plug-in card program, can be implemented as the multiple card format such as ocx, dll, cab.Also can implement the method for based on electronic chart, searching point of interest that embodiment of the present invention proposes by the concrete technology such as Flash plug-in unit, RealPlayer plug-in unit, MMS plug-in unit, MIDI staff plug-in unit, ActiveX plug-in unit.
Below the application scenarios of embodiment of the present invention is described in more detail.
Such as: the situation of finding public lavatory while take current very common going out is example, and embodiment of the present invention is elaborated.
When the application embodiment of the present invention is searched for the scene in public lavatory to mobile phone users, at first mobile phone users opens electronic chart in mobile terminal, then click " periphery " button in electronic chart, to select geographic information server in peripheral list, returned to public lavatory information.If the user selects certain public lavatory on electronic chart, mobile terminal calculates from the user position to the track route specified public lavatory, and demonstrates this track route in electronic chart, and detailed track route information.
In the specific implementation of said process, can in the feature list of the Perimeter of electronic map of mobile terminal, add new classification " public lavatory ", increase in the background data base of geographic information server in classification---" public lavatory " of new peripheral facility simultaneously, and preserve the coordinate information in public lavatory in the background data base of geographic information server.
When the user searches for public lavatory on electronic map of mobile terminal, mobile terminal can send to geographic information server as parameter using the current position coordinates at user place and searching facility type.Geographic information server searches the coordinate points that the distance of assigned address coordinate is all public lavatorys type in certain scope after receiving instruction in database, and the public lavatory coordinate searched out is returned to mobile terminal.Then, the data of on mobile terminal, geographical information server terminal being returned are shown after being resolved on map.Now, after the user has clicked the some public lavatorys coordinate on the map, on mobile terminal, calculate in real time, and demonstrate the track route that arrives the public lavatory hit of putting on map.
When the application embodiment of the present invention is supplemented the scene of public lavatory geographical location information to the user, at first mobile phone users roams into certain public lavatory, and finds that this public lavatory information does not identify in electronic chart; Then mobile phone users is opened electronic chart in mobile terminal, and for newly-increased public lavatory, this public lavatory, identifies on electronic chart.After network upgrades, the public lavatory information that other users can submit to for this user is commented on.And, once this mobile phone users editor's public lavatory information becomes " effectively " information, this mobile phone users can obtain certain reward on total mark.
In the specific implementation of said process, at first in the electronic map system data, will increase by two fields for geography information: one is the geography information state, and 0 means " pending trial ", and 1 means " effectively ", and 2 mean engineering noise; Another is for the identification information submitter, such as the user ID that can be the submitter.Then set up a comment table for the geography information comment data, wherein: first classifies comment ID as; Second classifies the comment result as; 1 means effectively, and 2 expressions are invalid; The 3rd classifies the comment word as; The 4th classifies associated geography information ID as.Then, can in subscriber's meter, increase an integration field, mean the number of points that the user obtains.
In one embodiment, the public lavatory geography information has status indicator, be divided into as three kinds of states of " pending trial " " effectively " engineering noise, wherein newly-increased public lavatory is defaulted as " pending trial ", the geography information that the user can submit to other users is estimated, evaluation is divided into two kinds of " effectively " engineering noises, and can write the comment word.
Such as: when " pending trial " information is obtaining surpassing 10 " effectively " comment, and in all comments, " effectively " accounting surpasses 80%, can automatically become " effectively " information.And original any " effectively " information on electronic chart, in the evaluation of receiving within continuous one month, surpassing 80% is engineering noise, and engineering noise quantity is greater than 10, can this public lavatory geography information be set to the engineering noise state.Such as: the geography information of engineering noise can notify former human editor automatically to hide from electronic chart afterwards in 1 day.
Above is that exemplary embodiment has been described in detail embodiment of the present invention by finding public lavatory, it will be appreciated by those of skill in the art that this example explanation, only for purposes of illustration, is not intended to limit the present invention the protection domain of embodiment.
In fact, embodiment of the present invention is not only applicable to find the application scenarios of public lavatory, also is applicable to find the application scenarios of point of interest arbitrarily such as parking lot, cinema, gymnasium, airport, railway station or threatre.
Based on above-mentioned labor, embodiment of the present invention has also proposed a kind of system of searching point of interest based on electronic chart.
Fig. 2 is for searching the system construction drawing of point of interest according to embodiment of the present invention based on electronic chart.
As shown in Figure 2, this system comprises mobile terminal 201 and geographic information server 202.Wherein:
Wherein:
In one embodiment, mobile terminal 201, be further used for when roaming into the point of interest that not yet is recorded to geographic information server, identify this point of interest in this electronic chart, and the position coordinates of this point of interest is sent to geographic information server preserved.
In another embodiment, geographic information server 202, for when preserving the position coordinates of this point of interest, further preserve for identifying the geography information mode bit of point of interest validity.And, the geography information mode bit specifically can comprise: the geography information mode bit that the geography information mode bit that the geography information mode bit that sign point of interest validity is pending state, sign point of interest validity are effective status or sign point of interest validity are disarmed state, etc.
Preferably, mobile terminal 201, be further used for sending the point of interest review information to geographic information server 202; Geographic information server 202, be further used for, according to the point of interest review information, the geography information mode bit corresponding to this point of interest is set.Wherein, geographic information server 202, for when according to the point of interest review information, corresponding to the geography information mode bit of this point of interest, being set to disarmed state, send to mobile terminal 201 electronic chart that is concealed with point of interest.
In sum, in embodiment of the present invention, mobile terminal sends the mobile terminal current position coordinates to geographic information server; Geographic information server retrieval is apart from the coordinate of interest points in mobile terminal current position coordinates preset range, and returns to coordinate of interest points to mobile terminal; Mobile terminal calculates the route from the mobile terminal current position coordinates to coordinate of interest points, and shows this route in the electronic chart of mobile terminal.As can be seen here, after the application embodiment of the present invention, can be when the user use electronic chart finding nearby point of interest, near the point of interest location indication providing, and the route that arrives destination is provided, thus realize location-based searching for point of interest service.
And, embodiment of the present invention can also allow the user by electronic chart still Unrecorded interest point information add in electronic chart, contribute by the user that pattern is common builds complete city point of interest geographic information database.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a method of searching point of interest based on electronic chart, is characterized in that, the method comprises:
Mobile terminal sends the mobile terminal current position coordinates to geographic information server;
According to this mobile terminal current position coordinates, the coordinate of interest points that the geographic information server retrieval is interior apart from described mobile terminal current position coordinates preset range, and return to described coordinate of interest points to mobile terminal;
Mobile terminal calculates the route from described mobile terminal current position coordinates to described coordinate of interest points, and shows this route in the electronic chart of mobile terminal.
2. method of searching point of interest based on electronic chart according to claim 1, is characterized in that, the method further comprises:
When not yet being recorded to the point of interest of geographic information server, identify this point of interest when mobile terminal roaming in this electronic chart, and the position coordinates of this point of interest is sent to geographic information server preserved.
3. method of searching point of interest based on electronic chart according to claim 1, is characterized in that, the method further comprises:
When mobile terminal roaming when not yet being recorded to the point of interest of geographic information server, the position coordinates of this point of interest is sent to geographic information server to be preserved, wherein geographic information server, when preserving the position coordinates of this point of interest, is further preserved for identifying the geography information mode bit of point of interest validity.
4. method of searching point of interest based on electronic chart according to claim 3, it is characterized in that, described geography information mode bit comprises: the geography information mode bit that the geography information mode bit that the geography information mode bit that sign point of interest validity is pending state, sign point of interest validity are effective status or sign point of interest validity are disarmed state.
5. method of searching point of interest based on electronic chart according to claim 4, is characterized in that, the method further comprises:
Mobile terminal sends the point of interest review information to geographic information server;
Geographic information server arranges the geography information mode bit corresponding to this point of interest according to described point of interest review information.
6. method of searching point of interest based on electronic chart according to claim 5, is characterized in that, the method further comprises:
When geographical information server is set to disarmed state according to described point of interest review information corresponding to the geography information mode bit of this point of interest, send the electronic chart that is concealed with described point of interest to mobile terminal.
7. a system of searching point of interest based on electronic chart, is characterized in that, this system comprises mobile terminal and geographic information server, wherein:
Mobile terminal, for sending the mobile terminal current position coordinates to geographic information server;
Geographic information server, for according to this mobile terminal current position coordinates, retrieve the coordinate of interest points interior apart from described mobile terminal current position coordinates preset range, and return to described coordinate of interest points to mobile terminal;
Described mobile terminal, be further used for calculating the route from described mobile terminal current position coordinates to described coordinate of interest points, and show this route in the electronic chart of mobile terminal.
8. system of searching point of interest based on electronic chart according to claim 7, is characterized in that,
Mobile terminal, be further used for when roaming into the point of interest that not yet is recorded to geographic information server, identifies this point of interest in this electronic chart, and the position coordinates of this point of interest is sent to geographic information server preserved.
9. system of searching point of interest based on electronic chart according to claim 7, is characterized in that,
Mobile terminal, be further used for, when roaming into the point of interest that not yet is recorded to geographic information server, the position coordinates of this point of interest being sent to geographic information server and being preserved;
Geographic information server, for when preserving the position coordinates of this point of interest, further preserve for identifying the geography information mode bit of point of interest validity.
10. system of searching point of interest based on electronic chart according to claim 9, it is characterized in that, described geography information mode bit comprises: the geography information mode bit that the geography information mode bit that the geography information mode bit that sign point of interest validity is pending state, sign point of interest validity are effective status or sign point of interest validity are disarmed state.
11. system of searching point of interest based on electronic chart according to claim 10, is characterized in that,
Mobile terminal, be further used for sending the point of interest review information to geographic information server;
Geographic information server, be further used for, according to described point of interest review information, the geography information mode bit corresponding to this point of interest is set.
12. system of searching point of interest based on electronic chart according to claim 11, is characterized in that,
Geographic information server, for when according to described point of interest review information, corresponding to the geography information mode bit of this point of interest, being set to disarmed state, send the electronic chart that is concealed with described point of interest to mobile terminal.
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