Method for providing navigation information, machine-readable storage medium, mobile terminal, and server

1. A method for providing navigation information by a mobile terminal, the method comprising:

generating, by the mobile terminal, a preview image captured by a camera and location information of the mobile terminal;

transmitting, by the mobile terminal, the preview image and location information to a server;

receiving, by the mobile terminal, route guide information generated based on the preview image and the location information, from the server;

generating, by the mobile terminal, at least one virtual object based on the route guide information;

synthesizing, by the mobile terminal, the at least one virtual object with an image; and

displaying, by the mobile terminal, the route guide information to a user.

2. The method as claimed in claim 1 , wherein the image with which the at least one virtual object is synthesized corresponds to the preview image, and

wherein the displaying of the route guide information comprises:

displaying, by the mobile terminal, the at least one virtual object synthesized with the preview image to the user.

3. The method as claimed in claim 1 , wherein the image with which the at least one virtual object is synthesized corresponds to a street view image, and

wherein the displaying of the route guide information comprises:

displaying, by the mobile terminal, the at least one virtual object synthesized with the street view image to the user.

4. The method as claimed in claim 1 , further comprising:

analyzing, by the mobile terminal, the route guide information received from the server; and

determining, by the mobile terminal, a route guide mode among a plurality of route guide modes.

5. The method as claimed in claim 4 , further comprising:

determining, by the mobile terminal, whether a view change event occurs; and

changing, by the mobile terminal, the determined route guide mode to another route guide mode when the view change event occurs.

6. A non-transitory machine-readable storage medium which stores a program for executing a method for providing navigation information, the method comprising:

generating, by the mobile terminal, a preview image captured by a camera and location information of the mobile terminal;

transmitting, by the mobile terminal, the preview image and location information to a server;

receiving, by the mobile terminal, route guide information generated based on the preview image and the location information, from the server;

generating, by the mobile terminal, at least one virtual object based on the route guide information;

synthesizing, by the mobile terminal, the at least one virtual object with an image; and

displaying, by the mobile terminal, the route guide information to a user.

7. A method for providing navigation information by a server, the method comprising:

receiving, by the server, a preview image captured by the mobile terminal and location information of the mobile terminal, from the mobile terminal;

matching, by the server, the preview image with a pre-stored street view image;

generating, by the server, route guide information based on location and direction information related to the matched street view image; and

transmitting, by the server, the route guide information, from which at least one virtual object is generated and synthesized with an image, to the mobile terminal.

8. The method as claimed in claim 7 , wherein the route guide information comprises:

the location and direction information related to the matched street view image;

Point Of Interest (POI) information corresponding to information on a point of interest; and

route information.

9. The method as claimed in claim 7 , wherein the route guide information comprises:

location and direction information; and

a street view image.

10. The method as claimed in claim 7 , wherein the route guide information further comprises an identifier indicating whether the matching is successful.

11. The method as claimed in claim 7 , further comprising:

generating, by the server, route guide information comprising location and direction information and a street view image when the matching fails; and

transmitting, by the server, the generated route guide information when the matching fails, to the mobile terminal.

12. A mobile terminal for navigation, the mobile terminal comprising:

a camera which captures a preview image;

a sensor unit which generates location information of the mobile terminal;

a communication unit which transmits the preview image and the location information to a server; and

a controller which controls the communication unit to receive route guide information generated based on the preview image and the location information from the server, which generates at least one virtual object based on the route guide information, which synthesizes the at least one virtual object with an image, and which controls a display unit to display the route guide information to a user.

13. The mobile terminal as claimed in claim 12 , wherein the image with which the at least one virtual object is synthesized corresponds to the preview image, and

wherein the controller displays the at least one virtual object synthesized with the preview image to the user.

14. The mobile terminal as claimed in claim 12 , wherein the image with which the at least one virtual object is synthesized corresponds to a street view image, and

wherein the controller displays the at least one virtual object synthesized with the street view image to the user.

15. The mobile terminal as claimed in claim 12 , wherein the controller analyzes the route guide information received from the server, and determines a route guide mode among a plurality of route guide modes.

16. The mobile terminal as claimed in claim 15 , wherein the controller determines whether a view change event occurs, and changes the determined route guide mode to another route guide mode when the view change event occurs.

17. A server which provides navigation information to a mobile terminal, the server comprising:

a communication unit which receives, from the mobile terminal, a preview image captured by the mobile terminal and location information of the mobile terminal;

a memory which stores street view images; and

a controller which searches for a street view image matching the preview image from the street view images, which generates route guide information based on location and direction information related to the matched street view image, and which controls the communication unit to transmit the route guide information, from which at least one virtual object is generated and synthesized with an image, to the mobile terminal.

18. The server as claimed in claim 17 , wherein the route guide information comprises:

the location and direction information related to the matched street view image;

Point Of Interest (POI) information corresponding to information on a point of interest; and

route information.

19. The server as claimed in claim 17 , wherein, when the matching fails, the controller generates route guide information comprising location and direction information and a street view image, and controls the communication unit to transmit the generated route guide information to the mobile terminal.