KR20110002517A - Navigation method using mobile terminal, computer readable recording medium for program conducting the same, and mobile terminal having this recording medium - Google Patents

Abstract

PURPOSE: A navigation method using mobile terminal, a computer readable recording medium for program conducting the same, and a mobile terminal having the recording medium are provided to perform a navigation function up to a desirable destination by grasping the location information from the photographed image information. CONSTITUTION: A control unit receives a photographed image of a photographing unit(S10), and extracts character information from the photographing image(S11). The control unit obtains source location information from the character information(S12). The control unit receives destination location information from a user(S13), and acquires navigation information from the destination information and the source location information(S14). A display unit displays the navigation information(S15).

Description

NAVIGATION METHOD USING MOBILE TERMINAL, COMPUTER READABLE RECORDING MEDIUM FOR PROGRAM CONDUCTING THE SAME, METHOD OF NAVIGATION USING MOBILE COMMUNICATION TERMINALS , AND MOBILE TERMINAL HAVING THIS RECORDING MEDIUM}

The present invention relates to a navigation method using a mobile communication terminal, a computer-readable recording medium recording a program for performing this function, and a mobile communication terminal equipped with the recording medium, and more particularly, to a mobile communication terminal. The present invention relates to an apparatus and a method for performing a navigation function up to a desired destination by grasping location location information from image information photographed using an image pickup device.

Recently, due to the development of communication technology and related device technology, the multifunctionalization (convergence) of mobile communication terminals (mobile phones, PDA phones, etc.) is in progress. For example, a case in which a function such as a camera or an MP3, or a wireless Internet function is added to a mobile phone is well known.

According to this trend, there is a movement to implement mobile phones with navigation (route navigation or directions). As a conventional technology for realizing such a function, a method of using a navigation function by accessing a paid or free site providing a navigation solution using a wireless Internet function of a mobile phone has been known. However, since this method requires a user to access a wireless Internet using a mobile communication terminal and visit a specific site and input location information of a departure point and a destination directly, it is not only cumbersome to use, but also precisely identifies location information of a departure point and a destination. There was a problem that it is difficult to use if not known.

On the other hand, when using the method of tracking the location of the mobile phone using the mobile communication base station, because the location data error of the base station signal is considerable, it is difficult to use this as the starting location information of the navigation, that is, the current location information of the user. In order to reduce the positional data error, the GPS must be additionally installed in the mobile phone, which causes the mobile phone to be enlarged.

The present invention is to solve the above-mentioned problems of the prior art, an economical and convenient device for performing a navigation function to the desired destination by grasping the location information from the image information captured using the imaging device provided in the mobile communication terminal; It aims to provide the method.

In order to achieve the above object, the present invention comprises the steps of receiving a video image photographed using an imaging device provided in the mobile communication terminal; Extracting text information from the video image; Obtaining starting location information from the text information; Receiving destination location information from a user; Acquiring navigation (route search) information from the source location information and destination location information; And it provides a navigation method using a mobile communication terminal comprising the step of displaying the navigation information.

In addition, the present invention comprises the steps of receiving a video image photographed using the imaging device provided in the mobile communication terminal; Extracting text information from the video image; Obtaining destination location information from the text information; Receiving starting location information from a user; Acquiring navigation (route search) information from the source location information and destination location information; And it provides a navigation method using a mobile communication terminal comprising the step of displaying the navigation information.

The extracting of the text information may include: defining a specific text area in the video image; And recognizing a character by correcting the image image in the character area.

In the present invention, the step of obtaining the starting position information, the step of transmitting the text information to the server; And receiving location information corresponding to the text information from the server.

In the present invention, the step of obtaining the destination location information, the step of transmitting the text information to the server; And receiving location information corresponding to the text information from the server.

In the present invention, the location information received from the server may be location information searched to correspond to the text information by searching the location information DB stored in the server.

In the present invention, receiving two or more location information corresponding to the text information from the server, and obtaining the starting location information, the display of the mobile communication terminal two or more location information received from the server Marking on the part; And selecting and inputting location information corresponding to a starting location from two or more location information from a user.

In the present invention, receiving two or more location information corresponding to the text information from the server, and obtaining the destination location information, the display of the mobile communication terminal to display the two or more location information received from the server Marking on the part; And selecting and inputting location information corresponding to an arrival location from two or more location information from a user.

In the present invention, the step of obtaining the starting position information, the step of transmitting the position data and the text information obtained from the GPS provided in the mobile communication terminal to the server; And receiving location information corresponding to the location data and the text information from the server.

In the present invention, the location information received from the server may be location information that matches the location data of the location information searched to correspond to the text information by searching the location information DB stored in the server.

In still another aspect, the present invention provides a mobile communication terminal interworking with a server via a wireless Internet, the mobile communication terminal having an image capturing device, which receives a video image photographed using the image capturing device and extracts text information from the video image; Transmitting the text information to the server and receiving source location information corresponding to the text information from the server; Receiving destination location information from a user and transmitting the destination location information to a server; And a computer-readable recording medium having recorded thereon a program for realizing a function of receiving the source location information and the navigation (route search) information corresponding to the destination location information from the server.

The present invention also provides a mobile communication terminal interworking with a server via a wireless Internet, and having a function of extracting text information from the video image by receiving a video image photographed using the imaging device; Transmitting the text information to the server and receiving destination location information corresponding to the text information from the server; Receiving source location information from a user and transmitting the source location information to a server; And a computer-readable recording medium having recorded thereon a program for realizing a function of receiving the source location information and the navigation (route search) information corresponding to the destination location information from the server.

The present invention also provides a mobile communication terminal interworking with a server through a wireless Internet, and having a function of extracting text information from the video image by receiving a video image photographed using the imaging apparatus; Transmitting location data and the text information acquired from the GPS to the server, and receiving location data corresponding to the location data and the text information from the server; Receiving destination location information from a user and transmitting the destination location information to a server; And a computer-readable recording medium having recorded thereon a program for realizing a function of receiving the source location information and the navigation (route search) information corresponding to the destination location information from the server.

Finally, the present invention provides a mobile communication terminal equipped with the recording medium.

According to the present invention, there is provided a navigation method using a mobile communication terminal, a computer-readable recording medium recording a program for performing this function, and a mobile communication terminal equipped with the recording medium. The present invention provides an economical and convenient apparatus and method for locating location information from photographed image information and performing a navigation function to a desired destination.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a mobile communication terminal and a server for performing a navigation method according to the present invention. As shown, the mobile communication terminal 10 such as a mobile phone is connected to the server 20 through the wireless Internet. Here, the server 20 may be understood as a concept including a server of a free or paid information provider, for example, an internet portal company or a navigation solution provider, which can be accessed through the Internet.

2 is a block diagram of a mobile communication terminal according to an embodiment of the present invention. The mobile communication terminal 10 includes a key input unit 11 for receiving information from a user, a display unit 12 for visually outputting information to a user, and an imaging device (camera) 13 for capturing an image image. The functions of the key input unit 11, the display unit 12, and the imaging device 13 are controlled by the control unit 14. The input or output information is stored in the memory unit 15 connected to the control unit 14. Although not shown, a device for performing various functions such as MP3, Global Positioning System (GPS), and Digital Multimedia Broadcasting (DMB) may be provided in the mobile communication terminal 10.

3 is a block diagram of a server according to an embodiment of the present invention. The server 20 includes a controller 21, a character information DB 22 and a location information DB 23 connected to the controller 21. The control unit 21 performs various data processing functions using the character information DB 22 and the location information DB 23. For example, the control unit 21 performs functions such as a DB search 24, a navigation 25, and a route guide 26. . The character information DB 22 and the location information DB 23 may be implemented in a single DB, or may be implemented in a separate DB, but both DBs interoperate by including a tag corresponding to another DB in one DB. It can also be implemented. The character information DB 22 is a DB which collects and organizes a lot of character information, such as a company name, a building name, a name of a public institution, and a road name, for example. The location information DB 23 is a DB that collects and organizes a large number of addresses, latitude and longitude information, etc. which can specify a location in space of a company, a building, a public institution, a road, and the like.

Figure 4 is a flow chart briefly showing a navigation method according to an embodiment of the present invention.

First, when the user photographs each other written on a signboard of a store using the imaging device 13 provided in the mobile communication terminal 10, the user receives the photographed image image (S10). Character information, for example, character information corresponding to each other, is extracted from the received video image (S11). From the character information, source location information, that is, information corresponding to the address where the current user is located is obtained (S12). Next, the destination location information is received from the user using the key input unit 11 or the like provided in the mobile communication terminal 10 (S13). Thereafter, using the departure location information and the arrival location information, movement path information, that is, navigation information, from the departure place to the arrival place is obtained (S14). Finally, the navigation information is displayed to the user through the display unit 12 or the like of the mobile communication terminal 10 (S15).

In this navigation method, the starting position information is obtained using the captured image. That is, when the user does not know the location information (address, etc.) of the location where he is currently located, the location information is obtained by photographing a business name or a road name written on a signboard of nearby shops.

As another embodiment of the present invention, it is also possible to obtain a destination location information by using a previously captured video image. That is, while the user knows the location information of the location where he is currently located, the location information of the destination is unknown, but the image image photographing the name of the store or the street of the shops near the destination is displayed in the memory unit 15 of the mobile communication terminal 10. ), The location image is obtained by receiving the video image. In this case, the starting point location information is input by the user through the key input unit 11 of the mobile communication terminal 10.

As another embodiment of the present invention, the user photographs the location information of the location where he is currently located, obtains the location information of the starting point from the name or the road name written on the signboard of the nearby shop, and also the destination location information. It is also possible to acquire by using a video image.

The method of acquiring the location information from the video image is the same whether the location information is the source location information or the destination location information. Therefore, in the following, the name of the store or the street name of the shops near the location where the user is located in the situation where the user knows the destination location information. It is assumed that a case of photographing a back and obtaining starting position information from the video image will be described.

5 is a detailed flowchart illustrating a navigation method according to an embodiment of the present invention. The flowchart shown on the left in the drawing is a task performed in the mobile communication terminal 10, the flowchart shown on the right is a task performed in the server 20 connected to the mobile communication terminal 10 and the wireless Internet, and the arrows indicated by dotted lines Denotes a flow of information occurring between the mobile communication terminal 10 and the server 20.

First, a user photographs an external image using the imaging device 13 provided in the mobile communication terminal 10 (S101). Character information is extracted from the photographed video image. To facilitate the extraction of the character information, for example, the region in which the character is written is defined in the photographed image image (S102), and the character is processed through image processing and character recognition within the limited region. Information is extracted (S103). Specifically, character recognition may be performed after a process of perspective correction, aliasing correction, noise removal, and the like of the image image. Since such a method is well known, a detailed description thereof will be omitted.

The extracted text information is transmitted from the mobile communication terminal 10 to the server 20 via the wireless Internet (S104). The server 20 searches for the previously stored text information DB 22 and the location information DB 23 to extract the location information suitable for the transmitted text information (S105). Specifically, after searching whether there is data corresponding to the character information transmitted from the character information DB 22, the position information on the position information DB 23 corresponding to the data is searched.

Typically, there may be several to tens of location information corresponding to the character information. For example, in the case of text information corresponding to a trade name of a store, there may be dozens of stores having the same trade name nationwide.

Therefore, two or more location information corresponding to the extracted text information is transmitted from the server 20 to the mobile communication terminal 10 (S106), and then displayed on the display unit 12 of the mobile communication terminal 10 (S106). S107), and allows the user to select location information corresponding to the current location, that is, the starting location, from the two or more location information (S108).

Next, the destination location information is received from the user using the key input unit 11 or the like provided in the mobile communication terminal 10 (S109). Thereafter, starting location information and destination location information are transmitted from the mobile communication terminal 10 to the server 20 (S110).

Next, a navigation (route search) function from the departure point to the arrival point is performed using the departure location information and the arrival location information in the server 20 (S111). The route search methods are various, for example, the shortest route search, the highway priority route search, the freeway priority route search, and the route search reflecting traffic information (congestion road information). Let's do it.

The route information searched by the server 20 is transmitted to the mobile communication terminal 10 (S112) and displayed through the display unit 12 of the mobile communication terminal 10 (S113). Typically, since two or more route informations are usually given according to a route search method, the user selects a suitable route among these two or more routes (S114).

Next, the route information selected by the user is transmitted from the mobile communication terminal 10 to the server 20 (S115). The route guide information is searched by the server according to the route information selected by the user (S116). Specifically, the route guidance information may be set by map matching the route selected by the user to separate map data, or the intersection information or the direction change information to be actually changed when the user moves in the route selected by the user as route guidance information. It may be.

Finally, the route guidance information is transmitted from the server 20 to the mobile communication terminal 10 (S117) and displayed on the display unit 12 of the mobile communication terminal 10 (S118), thereby navigating using the video image. The task is complete.

Although not shown in the flowchart, the step of obtaining location information in the server 20 may be made easier by using the GPS provided in the mobile communication terminal 10. That is, when the position data is acquired from the GPS provided in the mobile communication terminal and transmitted to the server 20 together with the text information, even if the server 20 searches two or more pieces of the location information corresponding to the text information, The location information corresponding to the location data acquired from the GPS among the location information may be set as the current location information, that is, the starting location information. In this case, the process of S108 of FIG. 4 may be omitted, thereby enabling a faster process.

Until now, the navigation method using a mobile communication terminal according to an embodiment of the present invention has been described. As another aspect of the present invention, a computer-readable recording medium recording a program for realizing the above-described navigation function, and the recording medium You can also think of a mounted mobile communication terminal.

For example, when the source location information is acquired through a video image and the destination location information is input from a user according to an embodiment of the present invention, the program interworks with the server 20 through the wireless Internet, A mobile communication terminal 10 having a function of receiving a video image photographed using the imaging device 13 and extracting character information from the video image, and transmitting the text information to the server 20, A function of receiving source location information corresponding to the text information from the server 20, a function of receiving destination location information from a user, and transmitting the destination location information to the server 20, and the server 20 from the server 20. It is possible to realize a function of receiving the departure location information and the navigation information corresponding to the arrival location information.

In addition, according to another embodiment of the present invention, when the destination location information is acquired through a video image and the source location information is input from a user, the program interworks with the server 20 through the wireless Internet, and the imaging device 13 A function of extracting image information from the image image by receiving the image image photographed using the imaging device 13, and transmitting the character information to the server 20. A function of receiving destination location information corresponding to the text information from the server 20, a function of receiving departure location information from a user, and transmitting the departure location information to the server 20, and from the server 20. A function of receiving the navigation location information corresponding to the departure location information and the arrival location information may be realized.

In addition, when using the GPS provided in the mobile communication terminal 10 as another embodiment of the present invention, the program is interlocked with the server 20 via the wireless Internet, and provided with an imaging device 13 and GPS A mobile communication terminal 10 receives a video image photographed using the imaging device 13 and extracts text information from the video image. The server 20 stores position data and the text information obtained from the GPS. ), A function of receiving source location information corresponding to the location data and the text information from the server 20, and receiving destination location information from a user and transmitting the destination location information to the server 20. And a function of receiving, from the server 20, navigation information corresponding to the departure location information and the arrival location information.

As mentioned above, although the Example of this invention was described, it is clear that a change of a structure, addition, and substitution by an equivalent can be carried out within the range included in the technical idea of this invention.

By adopting the above-described configuration, the present invention provides an economical and convenient apparatus and method for performing a navigation function to a desired destination by grasping location information from image information photographed using an imaging device provided in a mobile communication terminal.

1 is a block diagram of a mobile communication terminal and a server for performing a navigation method according to the present invention.

2 is a block diagram of a mobile communication terminal according to an embodiment of the present invention.

3 is a block diagram of a server according to an embodiment of the present invention.

4 is a flowchart of a navigation method according to an embodiment of the present invention.

5 is a flowchart illustrating a navigation method according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: mobile communication terminal 11: key input unit

12: display unit 13: imaging device

14: control unit 15: memory unit

20: server

Claims (14)

Receiving a video image photographed using an imaging device provided in a mobile communication terminal; Extracting text information from the video image; Obtaining starting location information from the text information; Receiving destination location information from a user; Acquiring navigation (route search) information from the source location information and destination location information; And Displaying the navigation information Navigation method using a mobile communication terminal comprising a. Receiving a video image photographed using an imaging device provided in a mobile communication terminal; Extracting text information from the video image; Obtaining destination location information from the text information; Receiving starting location information from a user; Acquiring navigation (route search) information from the source location information and destination location information; And Displaying the navigation information Navigation method using a mobile communication terminal comprising a. The method of claim 1 or 2, wherein the extracting the text information comprises: Defining a specific text area in the video image; And Recognizing a character by correcting the image image in the character area Navigation method using a mobile communication terminal comprising a. The method of claim 1, wherein the obtaining of the starting location information comprises: Transmitting the text information to a server; And Receiving location information corresponding to the text information from the server Navigation method using a mobile communication terminal comprising a. The method of claim 2, wherein the obtaining of the destination location information comprises: Transmitting the text information to a server; And Receiving location information corresponding to the text information from the server Navigation method using a mobile communication terminal comprising a. The navigation apparatus of claim 4 or 5, wherein the location information received from the server is location information searched to correspond to the text information by searching the location information DB stored in the server. Way. The method of claim 4, further comprising receiving at least two location information corresponding to the text information from the server, Acquiring the departure location information, Displaying at least two location information received from the server on a display unit of the mobile communication terminal; And Selecting and inputting location information corresponding to a starting location from two or more location information from a user Navigation method using a mobile communication terminal comprising a. According to claim 5, The server receives two or more location information corresponding to the text information, Acquiring the destination location information, Displaying at least two location information received from the server on a display unit of the mobile communication terminal; And Selecting and inputting location information corresponding to a destination location from two or more location information from a user Navigation method using a mobile communication terminal comprising a. The method of claim 1, wherein the obtaining of the starting location information comprises: Transmitting the position data and the text information acquired from the GPS provided in the mobile communication terminal to a server; And Receiving location information corresponding to the location data and the text information from the server; Navigation method using a mobile communication terminal comprising a. 10. The method of claim 9, wherein the location information received from the server is a location information matched with the location data among the location information searched by searching the location information DB stored in the server and corresponding to the text information. Navigation method using communication terminal. In the mobile communication terminal interworking with the server through the wireless Internet, and equipped with an imaging device, A function of receiving a video image photographed using the imaging device and extracting text information from the video image; Transmitting the text information to the server and receiving source location information corresponding to the text information from the server; Receiving destination location information from a user and transmitting the destination location information to a server; And A function for receiving navigation (route search) information corresponding to the source location information and the destination location information from the server A computer-readable recording medium having recorded thereon a program for realizing this. In the mobile communication terminal interworking with the server through the wireless Internet, and equipped with an imaging device, A function of receiving a video image photographed using the imaging device and extracting text information from the video image; Transmitting the text information to the server and receiving destination location information corresponding to the text information from the server; Receiving source location information from a user and transmitting the source location information to a server; And A function for receiving navigation (route search) information corresponding to the source location information and the destination location information from the server A computer-readable recording medium having recorded thereon a program for realizing this. In the mobile communication terminal interworking with the server through the wireless Internet, and equipped with an imaging device and GPS, A function of receiving a video image photographed using the imaging device and extracting text information from the video image; Transmitting location data and the text information acquired from the GPS to the server, and receiving location data corresponding to the location data and the text information from the server; Receiving destination location information from a user and transmitting the destination location information to a server; And A function for receiving navigation (route search) information corresponding to the source location information and the destination location information from the server A computer-readable recording medium having recorded thereon a program for realizing this. A mobile communication terminal equipped with a recording medium according to any one of claims 11 to 13.

Images