Display device and method for controlling display device

1. A display apparatus comprising:

a user interface implemented in a spherical form;

a sensing device configured to sense a location of a user near the display apparatus; and

at least one processor configured to:

determine a point on the user interface that has a shortest distance to the location,

control the user interface to display a three-dimensional image photographed at 360 degrees, and

control the user interface to output image content at the point on the user interface.

2. The display apparatus according to claim 1 , wherein the user interface is implemented as a flexible display configured to directly display the three-dimensional image based on a control signal from the at least one processor.

3. The display apparatus according to claim 1 , wherein the user interface comprises:

at least one projector configured to irradiate a beam, and

a stereoscopic projection plate configured to project the beam.

4. The display apparatus according to claim 3 , wherein the at least one projector comprises a first projector which irradiates a first beam and a second projector which irradiates a second beam.

5. The display apparatus according to claim 1 , wherein the user interface comprises:

a display implemented as a touch screen device.

6. The display apparatus according to claim 1 ,

wherein the sensing device is further configured to sense actions of a plurality of users, and

wherein the at least one processor is further configured to control the user interface to individually output image contents corresponding to the actions of the plurality of users, respectively.

7. The display apparatus according to claim 1 ,

wherein the user interface comprises:

a display for displaying the three-dimensional image, and

an input for receiving a command of the user, and

wherein the at least one processor is further configured to control the display to output image content corresponding to the command of the user.

8. The display apparatus according to claim 7 ,

wherein the input is configured to receive commands of a plurality of users, and

wherein the at least one processor is further configured to control the display to individually output image contents corresponding to the commands of the plurality of users, respectively.

9. The display apparatus according to claim 1 ,

wherein the sensing device configured to sense a condition of the display apparatus or a surrounding environment, and

wherein the at least one processor is further configured to control the user interface to output image content corresponding to the condition or the surrounding environment.

10. The display apparatus according to claim 1 , further comprising:

a storage configured to store three-dimensional image data,

wherein the at least one processor is further configured to control the user interface to display the three-dimensional image based on the three-dimensional image data in the storage.

11. The display apparatus according to claim 10 , further comprising:

a communicator configured to receive the three-dimensional image data,

wherein the at least one processor is further configured to control the user interface so that the three-dimensional image is displayed based on the three-dimensional image data received by the communicator.

12. The display apparatus according to claim 1 , wherein the display apparatus is implemented as a head or an eye of a robot.

13. The display apparatus according to claim 1 , wherein the sensing device is further configured to sense a distance between the display apparatus and the user.

14. The display apparatus according to claim 1 , wherein a size of the image content that is output by the user interface is based on the shortest distance.

15. The display apparatus according to claim 14 , wherein the size of the image content that is output by the user interface is inversely proportional to the shortest distance.

16. A control method of a display apparatus, the method comprising:

displaying a three-dimensional image photographed at 360 degrees on a user interface implemented in a spherical form;

sensing a location of a user near the display apparatus;

determining a point on the user interface that has a shortest distance to the location; and

displaying image content at the point on the user interface.

17. The method of claim 16 , further comprising:

receiving a command of the user; and

displaying other image content corresponding to the command of the user on the user interface.

18. The method of claim 16 , further comprising:

sensing a condition of the display apparatus or a surrounding environment; and

outputting the image content on the user interface corresponding to the condition or the surrounding environment.