KR100657826B1 - System and Method for revising location information - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a mobile terminal and a geographic information providing apparatus and method for correcting location information.

2. The technical problem to be solved by the invention

The present invention provides a geographic information providing apparatus and method for retrieving the corresponding detailed location information from the geographic information database using the geographic search information or the surrounding image and the network-based location information received from the portable terminal, and the method; Transmitting geographical search information extracted from the surrounding image or the surrounding image and the network-based location information to the geographical information providing device, and correcting the network-based location information by using the detailed location information provided from the geographical information providing device. A mobile terminal and a method thereof, and network-based location information are acquired and transmitted to a geographic information providing device, and the surrounding image corresponding to the network-based location information and geographic information corresponding to the surrounding image are transmitted from the geographic information providing device. Hue to correct network-based location information The purpose is to provide a method for correcting location information in a large terminal.

3. Summary of Solution to Invention

According to an aspect of the present invention, there is provided a portable terminal comprising: image acquisition means for acquiring an image of a surrounding area; Image analysis means for extracting geographic search information from the image acquired by the image acquisition means, and then transmitting the extracted geographic search information and network-based location information to a geographic information providing apparatus; And location-based service processing means for correcting network-based location information by receiving geographic information searched using the geographic search information and the network-based location information from the geographic information providing device.

4. Important uses of the invention

The present invention is used in the position information correction system.

Location information correction, network based location information, geographic information, surrounding video, mobile terminal

Description

Mobile terminal and geographical information providing apparatus for location information correction and method thereof {System and Method for revising location information}             

1 is a configuration diagram of an embodiment of a location information correction system including a mobile terminal and a geographic information providing apparatus according to the present invention;

2 is a flowchart illustrating a method for correcting position information in a position information correction system according to the present invention;

3 is a flowchart of another embodiment of a method for correcting position information in a position information correcting system according to the present invention;

4 is a flowchart illustrating another embodiment of a method of correcting position information in the position information correcting system according to the present invention.

* Explanation of symbols for the main parts of the drawings

110: portable terminal 111: location-based service processing unit

112: image acquisition unit 113: image analysis unit

120: geographic information providing apparatus 121: geographic information database

122: geographic information search unit

The present invention relates to a location information correction system and a method thereof, and more particularly, to search and carry out the corresponding detailed location information from a geographic information database by using geographic search information received from a mobile terminal or surrounding images and network-based location information. Apparatus and method for transmitting the geographic information for transmitting to the terminal, and the geographic search information extracted from the surrounding image or the surrounding image and network-based location information to the geographic information providing apparatus, and accordingly received from the geographic information providing apparatus A mobile terminal and method for calibrating network-based location information using detailed location information, and network-based location information are acquired and transmitted to a geographic information providing device and transmitted from the geographic information providing device to the network-based location information. Corresponding ambient image and corresponding ambient image The present invention relates to a method of correcting location information in a portable terminal for receiving network information and correcting network-based location information.

In the present invention, the mobile terminal includes voice, text, and the like through a wireless communication such as a mobile communication terminal, a personal communication service (PCS) terminal, a personal digital assistant (PDA), a smartphone, a next generation mobile communication (IMT-2000) terminal, a wireless LAN terminal, and the like. And a portable wireless communication terminal capable of transmitting / receiving image data and the like.

In addition, the position information correction system in the present invention includes a mobile terminal and a geographic information providing apparatus.

In general, location based service (LBS) refers to providing various contents and online / offline integrated services to users based on location information obtained through wired / wireless communication networks. To this end, obtaining accurate location information is the most important problem.

Currently, the method of providing location information widely used is a network based method using a mobile communication network and a GPS method that acquires location information from a GPS satellite using a GPS (Global Positioning System) receiver, and a network method and a GPS method are combined. Network assisted GPS systems exist.

First, the GPS method uses the triangulation principle to measure the position, which requires an additional expensive GPS receiver for location recognition, and it is difficult to accurately recognize the location due to signal attenuation in shadowed areas such as indoor and building areas. The initial position recognition takes a long time.

Next, the network method typically includes a cellular method, a signal strength of a mobile communication terminal, a time of arrival (TOA) of the signal, a time difference of arrival (TDOA) of the signal, and an angle of incidence of the signal (Angle of Arrival). Calculate the location using parameters such as AOA).

The location recognition system based on the mobile communication network using this network method has the advantage that no additional function expansion is required for the mobile communication terminal.However, like the GPS method, the accurate location due to the multipath and signal attenuation in the shaded areas such as indoor and building dense areas There is a problem that is difficult to recognize.

Finally, the network assisted GPS method transmits assistance data to a mobile communication terminal using a mobile communication network, and the mobile communication terminal tracks and synchronizes the position of the satellite using the received assistance data. After measuring the pseudo-distance and transmitting the positioning data to the location recognition server to recognize the location of the terminal.

Although the network assisted GPS method has an advantage of reducing initial location information acquisition time compared to the conventional GPS method, an additional expensive GPS receiver is required for location information acquisition, and signal reception in shadowed areas such as indoors and buildings There is a problem that it is difficult to obtain accurate position information by attenuation.

The present invention has been proposed to solve the above problem, and transmits the geographical search information extracted from the surrounding image or the surrounding image and the network-based location information to the geographical information providing apparatus and accordingly provided by the geographical information providing apparatus. It is an object of the present invention to provide a mobile terminal and a method for correcting network-based location information using geographic information.

The present invention also provides an apparatus and method for providing geographic information for retrieving geographic information of a corresponding region from a geographic information database by using geographic search information received from a mobile terminal or surrounding images and network-based location information. There is another purpose to provide.                         

In addition, the present invention obtains the network-based location information and transmits it to the geographic information providing apparatus and receives the network and the geographic information corresponding to the surrounding image corresponding to the network-based location information from the geographic information providing device network Another object of the present invention is to provide a method for correcting location information in a mobile terminal for correcting location-based location information.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object, the portable terminal, the image acquisition means for obtaining an image of the surrounding area; Image analysis means for extracting geographic search information from the image acquired by the image acquisition means, and then transmitting the extracted geographic search information and network-based location information to a geographic information providing apparatus; And location-based service processing means for correcting network-based location information by receiving geographic information retrieved using the geographic search information and the network-based location information from the geographic information providing device.

In addition, the method of the present invention, the position information correction method in the mobile terminal, the position information acquisition step of obtaining the network-based current position information; Image acquisition step of acquiring the surrounding image; A geographical search information extraction step of extracting geographical search information from the obtained image; An information transmitting step of transmitting the extracted geographic search information and the acquired network-based location information to a geographic information providing apparatus; And a location information correction step of correcting network-based location information by receiving geographic information retrieved using the geographic search information and the network-based location information from the geographic information providing device.

On the other hand, the apparatus of the present invention for achieving the above object, the geographic information providing apparatus, geographic information storage means for storing geographic information corresponding to the name, detailed address, telephone number of the spatial object; Image analysis means for extracting geographical search information from the surrounding image by receiving the surrounding image photographed by the portable terminal and the network-based location information acquired by the portable terminal; And setting a search range of geographic information using the received network-based location information, searching geographic information of a corresponding region in the geographic information storage means using geographic search information extracted from the image analyzing means, and then establishing a communication network. Geographic information retrieval means for transmitting to the portable terminal through.

In addition, the method of the present invention, the method for correcting the location information in the geographic information providing apparatus, comprising: an information receiving step of receiving the surrounding image captured by the mobile terminal and the network-based location information obtained by the mobile terminal; A range setting step of setting a geographic information search range using the received network-based location information; A geographical search information extraction step of extracting geographical search information from the received surrounding image; A geographic information retrieval step of retrieving geographic information within the set range using the extracted geographic search information; And transmitting the searched geographic information to the portable terminal.

On the other hand, the method of the present invention for achieving the another object, the location information correction method in a mobile terminal, the location information acquisition step of obtaining the network-based current position information; An information transmitting step of transmitting the obtained network-based location information to a geographical information providing apparatus; And a location information correction step of correcting a network-based location information by receiving an image retrieved from the geographic information providing device using the network-based location information and corresponding geographic information.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of a location information correction system including a mobile terminal and a geographic information providing apparatus according to the present invention.

As shown in FIG. 1, the system for calibrating location information according to the present invention transmits geographic search information extracted from a surrounding image or the surrounding image and network-based location information to a geographical information providing apparatus 120 through a communication network. The mobile terminal 110 corrects network-based location information by using geographic information of a corresponding region provided through a communication network from the geographic information providing apparatus 120 and received from the mobile terminal 110 through a communication network. Geographic information providing apparatus 120 for retrieving geographic information of a corresponding region from geographic information database 121 using geographic search information or surrounding image and network-based location information and transmitting it to the mobile terminal 110 through a communication network. It includes.

Here, the mobile terminal 110 is a network by extracting geographic search information from the image acquisition unit (for example, the camera module) 112, the image acquisition unit 112 for obtaining an image of the surrounding area network Geographic information retrieved using the geographic search information and the network-based location information by the image analysis unit 113 and the geographic information providing device 120 for transmitting to the geographic information providing device 120 with the location-based information It includes a location-based service processor 111 for correcting the network-based location information received.

On the other hand, the geographic information providing apparatus 120, the geographic information database 121 that stores geographic information (for example, spatial coordinates) corresponding to the name, detailed address, and telephone number of the spatial object and the portable terminal 110 As geographic search information and network-based location information are transmitted from a communication network, a search range of geographic information is set by using network-based location information, and the corresponding geographic information database 121 is used in the geographic information database 121 using the geographic search information. And a geographic information retrieval unit 122 for retrieving geographic information of the area and transmitting the geographic information to the location-based service processor 111 of the mobile terminal 110 through a communication network.

Here, the location based service processor 111 may perform a location based service.

In addition, the image analyzer 113 extracts geographic search information from an image by using correlation of feature points or textures of the image. At this time, the extracted geographic search information is a road facility including a milestone or guide sign containing a text, a sign of a spatial object (building, etc.), and the name and detailed address of a spatial object extracted from a specific object (mail box, statue, etc.) , Include phone number.

In addition, the geographic information includes a spatial coordinate of a road facility including a milestone or guide sign including a letter, a spatial coordinate of a spatial object (such as a building), and a spatial coordinate of a specific object (such as a mailbox or a statue).

In addition, the geographic information database 121 may store region-specific image information and corresponding geographic information.

Meanwhile, in the above embodiment, the image analyzer 113 is mounted on the mobile terminal 110 to correct network-based location information as an example. However, the image analyzer 113 may provide a geographical information providing apparatus ( 120 may be used to correct network-based location information.

In more detail, the mobile terminal 110 acquires an image of a surrounding area and then transmits an image acquisition unit (for example, a camera) for transmitting the network-based location information to an image analysis unit of the geographical information providing apparatus 120. Module) 121 and a location-based service processor 111 for correcting network-based location information by using geographic information of a corresponding region received from the geographic information providing apparatus 120.

In addition, the geographic information providing apparatus 120 may include a geographic information database 121 that stores geographic information (eg, spatial coordinates) corresponding to a name, a detailed address, and a phone number of a spatial object, and the portable terminal 110. An image analyzer for extracting geographic search information from the surrounding images by receiving the surrounding image captured by the mobile terminal and network-based position information acquired by the mobile terminal, and geographical search information and network-based position information extracted by the image analyzer. A geography for setting a search range of geographic information, searching for geographic information of a corresponding region in the geographic information database 121, and transmitting the geographic information to the location-based service processor 111 of the mobile terminal 110 through a communication network; An information retrieval unit 122 is included.

Here, the image analyzer extracts geographic search information from an image by using correlation of feature points or textures of the image. At this time, the extracted geographic search information is a road facility including a milestone or guide sign containing a text, a sign of a spatial object (building, etc.), and the name and detailed address of a spatial object extracted from a specific object (mail box, statue, etc.) , Include phone number.

Meanwhile, according to another embodiment of the present invention, the portable terminal 110 may correct network-based location information without the image acquisition unit 112. Detailed description thereof will be made with reference to FIG. 4.

2 is a flowchart illustrating a method of correcting position information in the position information correction system according to the present invention.

First, the mobile terminal 110 obtains network-based current location information (201).

Thereafter, the surrounding image is obtained through the image obtaining unit 112 (202). In this case, the surrounding image may include road facilities including milestones or guide signs containing text, signs of spatial objects (buildings, etc.), and specific objects (post boxes, statues, etc.).

Thereafter, geographic search information is extracted by analyzing the acquired image (203). At this time, it is preferable that the extraction method of the geographic retrieval information uses the correlation of feature points or textures of the image.

Thereafter, it is checked whether extracted geographic search information exists (204).

As a result of the check 204, if the extracted geographic search information does not exist, the process proceeds to step 202 after outputting a re-shooting message (205). In this case, the acquired image does not include road facilities including milestones or guide signs containing letters, signs of spatial objects (buildings, etc.), and specific objects (post boxes, statues, etc.).

On the other hand, if the check result 204, the extracted geographic search information exists and transmits to the geographic information providing apparatus 120 along with the network-based location information (206).

Then, the geographic information providing apparatus 120 searches for geographic information in the geographic information database 121 using the received geographic search information (207). At this time, the network-based location information is used to set the geographic information search range.

If there is no geographic information in the search result 207 and the geographic information database 121, the mobile terminal 110 notifies the mobile terminal 110 of the content and outputs a re-shooting message. Proceed to step 205.

On the other hand, if geographic information exists in the search result 207 and geographic information database 121, the searched geographic information (spatial coordinates) is transmitted to the mobile terminal 110 (208).

Then, the mobile terminal 110 corrects network-based location information by using the geographic information provided from the geographic information providing apparatus 120 (209).

Then, the location-based service is performed (210).

3 is a flowchart of another embodiment of a method of correcting position information in the position information correcting system according to the present invention.

First, the mobile terminal 110 obtains network-based current location information (301).

Thereafter, the surrounding image is obtained through the image obtaining unit 112 (302). In this case, the surrounding image may include road facilities including milestones or guide signs containing text, signs of spatial objects (buildings, etc.), and specific objects (post boxes, statues, etc.).

Thereafter, the acquired image and network-based location information are transmitted to the geographical information providing apparatus 120 (303).

Then, the geographical information providing apparatus 120 extracts geographic search information by analyzing the received image (304). At this time, it is preferable that the extraction method of the geographic retrieval information uses the correlation of feature points or textures of the image.

Thereafter, geographic information is retrieved from the geographic information database 121 using the extracted geographic search information (305). At this time, the network-based location information is used to set the geographic information search range.

If there is no geographic information in the search result 305 and the geographic information database 121, the mobile terminal 110 notifies the mobile terminal 110 of the content and outputs a re-shooting message. Proceed to step 306.

On the other hand, if geographic information exists in the search result 305 and the geographic information database 121, the searched geographic information (spatial coordinates) is transmitted to the mobile terminal 110 (307).

Then, the mobile terminal 110 corrects network-based location information using the geographic information provided from the geographic information providing apparatus 120 (308).

Then, the location-based service is performed (309).

4 is a flowchart illustrating another embodiment of a method of correcting position information in the position information correcting system according to the present invention.

First, the mobile terminal 110 obtains network-based current location information (401).

Thereafter, the obtained network-based location information is transmitted to the geographical information providing apparatus 120 (402).

Then, the geographic information providing apparatus 120 searches for an image corresponding to the location information in the geographic information database 121 using the received location information (403).

Then, it is checked whether an image corresponding to the location information exists in the geographic information database 121 (404).

As a result of the check 404, if the image corresponding to the location information does not exist, it terminates, and if present, the image and the corresponding geographic information are transmitted to the mobile terminal 110 (405).

Then, the mobile terminal 110 corrects the network-based location information by using the received image and the corresponding geographic information (406). In this case, if there are a plurality of received images and corresponding geographic information, they are displayed to allow the user to determine the current location.

Thereafter, the location-based service is performed (407).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, by using the geographic search information received from the mobile terminal or the surrounding image and network-based location information to retrieve the corresponding detailed location information from the geographic information database to transmit to the mobile terminal, the geographic search extracted from the surrounding image Information or surrounding images and network-based location information are transmitted to the geographic information providing device, and accordingly, network-based location information is corrected using the detailed location information provided from the geographic information providing device, thereby eliminating indoor and outdoor GPS receivers. Even in shaded areas such as dense buildings, accurate location information can be obtained quickly.

The present invention also obtains network-based location information and transmits it to a geographic information providing device, and receives a surrounding image corresponding to the network-based location information and geographic information corresponding to the surrounding image from the geographic information providing device. By correcting the network-based location information, there is an effect that can correct the network-based location information without the image acquisition unit.

Claims (13)

In a mobile terminal, Image acquisition means for acquiring an image of a surrounding area; Image analysis means for extracting geographic search information from the image acquired by the image acquisition means, and then transmitting the extracted geographic search information and network-based location information to a geographic information providing apparatus; And Location-based service processing means for correcting network-based location information by receiving geographic information retrieved using the geographic search information and the network-based location information from the geographic information providing device. Mobile terminal comprising a. The method of claim 1, The image analysis means, And a geographic retrieval information using a correlation of feature points or textures of surrounding images. The method according to claim 1 or 2, The geographic information, A mobile terminal comprising the spatial coordinates of a road facility including a milestone or guide sign containing text, the spatial coordinates of a spatial object, and the spatial coordinates of a specific object such as a mail box or a statue. In the position information correction method in a mobile terminal, Location information acquisition step of acquiring network-based current location information; An image obtaining step of obtaining a surrounding image; A geographical search information extraction step of extracting geographical search information from the obtained image; An information transmitting step of transmitting the extracted geographic search information and the acquired network-based location information to a geographic information providing apparatus; And A location information correction step of correcting network-based location information by receiving geographic information searched using the geographic search information and the network-based location information from the geographic information providing device; Position information correction method in a mobile terminal comprising a. The method of claim 4, wherein The geographic search information extraction step, A method for correcting location information in a mobile terminal, comprising extracting geographic search information using correlations between feature points or textures of surrounding images. In the position information correction method in a mobile terminal, Location information acquisition step of acquiring network-based current location information; An information transmitting step of transmitting the obtained network-based location information to a geographical information providing apparatus; And Position information correction step of correcting the network-based location information by receiving the image retrieved using the network-based location information from the geographic information providing device and the corresponding geographic information Position information correction method in a mobile terminal comprising a. The method according to any one of claims 4 to 6, The geographic information, A method of correcting location information in a mobile terminal, comprising: spatial coordinates of a road facility including a milestone or guide sign including text, spatial coordinates of a spatial object, and spatial coordinates of a specific object such as a mail box or a statue. In the geographic information providing apparatus, Geographic information storage means for storing geographic information corresponding to the name, detailed address, and telephone number of the spatial object; Image analysis means for extracting geographical search information from the surrounding image by receiving the surrounding image photographed by the portable terminal and the network-based location information acquired by the portable terminal; And Set the search range of geographic information using the received network-based location information, search for geographic information of the corresponding area in the geographic information storage means using geographic search information extracted from the image analysis means, and then through a communication network. Geographic information retrieval means for transmitting to the portable terminal Geographic information providing apparatus comprising a. The method of claim 8, The image analysis means, Geographic information providing apparatus for extracting geographic search information using the correlation of the feature point or texture of the surrounding image. The method according to claim 8 or 9, The geographic information, Geographic information providing apparatus comprising the spatial coordinates of a road facility including milestones or guide signs containing text, the spatial coordinates of a spatial object, and the spatial coordinates of a specific object such as a mail box or a statue. In the position information correction method in the geographic information providing apparatus, An information receiving step of receiving the surrounding image photographed by the portable terminal and the network-based location information acquired by the portable terminal; A range setting step of setting a geographic information search range using the received network-based location information; A geographical search information extraction step of extracting geographical search information from the received surrounding image; A geographic information retrieval step of retrieving geographic information within the set range using the extracted geographic retrieval information; And A geographic information transmission step of transmitting the retrieved geographic information to the mobile terminal; Position information correction method in a geographic information providing apparatus comprising a. The method of claim 11, The geographic search information extraction step, A method of correcting location information in a geographic information providing apparatus, comprising: extracting geographic search information by using a correlation of feature points or textures of surrounding images. The method according to claim 11 or 12, The geographic information, Correcting location information in a geographic information providing device comprising spatial coordinates of road facilities including milestones or guide signs containing text, spatial coordinates of spatial objects, and spatial coordinates of a specific object such as a mailbox or a statue Way.

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