Display apparatus and image correction method thereof

1. A display apparatus comprising:

a display configured to display a first image received from an external apparatus;

a communicator configured to receive a second image generated by capturing an appearance of a user while the first image is displayed;

a processor configured to:

obtain a point of gaze of the user from the second image,

based on the point of gaze being located in a region of the first image other than a predetermined region of the first image,

control the communicator to transmit the second image to the external apparatus, and

based on the point of gaze being located in the predetermined region of the first image, generate a third image by placing an iris of the user at a predetermined position in the third image different than a position of the iris of the user in the second image and control the communicator to transmit the third image to the external apparatus,

wherein the predetermined region of the first image is a region corresponding to a person in the first image.

2. The display apparatus as claimed in claim 1 , wherein the point of gaze is located in a region corresponding to an eye of a person in the first image when the iris of the user is placed at the predetermined position in the third image.

3. The display apparatus as claimed in claim 1 , wherein the processor is further configured to detect an eye of a person from the first image, and

wherein the processor is further configured to control the communicator to transmit the second image to the external apparatus based on no eyes being detected from the first image.

4. The display apparatus as claimed in claim 1 , wherein the display is further configured to display a plurality of images received respectively from a plurality of external apparatuses, and

wherein the processor is further configured to determine whether the point of gaze is located in a preset region in each of the plurality of images.

5. The display apparatus as claimed in claim 4 , wherein the processor is further configured to determine a counterpart image among the plurality of images, the point of gaze being located in the preset region of the counterpart image, and control the communicator to transmit the third image to a corresponding external apparatus among the plurality of external apparatuses.

6. The display apparatus as claimed in claim 5 , wherein the processor is further configured to control the communicator to transmit the second image to remaining external apparatuses.

7. A video call system comprising:

a display apparatus configured to receive a first image from an external apparatus and display the first image; and

an imaging apparatus configured to generating a second image by capturing an appearance of a user while the first image is displayed,

wherein the display apparatus is further configured to:

obtain a point of gaze of the user from the second image,

based on the point of gaze being located in a region of the first image other than a predetermined region of the first image, transmit the second image to the external apparatus, and

based on the point of gaze being located in the predetermined region of the first image, generate a third image by placing an iris of the user at a predetermined position in the third image different than a position of the iris of the user in the second image and transmit the third image to the external apparatus,

wherein the predetermined region of the first image is a region corresponding to a person in the first image.

8. An image correction method of a display apparatus, the method comprising:

displaying a first image received from an external apparatus;

receiving a second image generated by capturing an appearance of a user while the first image is displayed;

obtaining a point of gaze of the user from the second image;

based on the point of gaze being located in a region of the first image other than a predetermined region of the first image,

transmitting the second image to the external apparatus; and

based on the point of gaze being located in the predetermined region of the first image, generating a third image by placing an iris of the user at a predetermined position in the third image different than a position of the iris of the user in the second image and transmitting the third image to the external apparatus,

wherein the predetermined region of the first image is a region corresponding to a person in the first image.

9. The method as claimed in claim 8 , wherein the point of gaze is located in a region corresponding to an eye of a person in the first image when the iris of the user is placed at the predetermined position in the third image.

10. The method as claimed in claim 8 , further comprising:

detecting an eye of a person from the first image, and

transmitting the second image to the external apparatus based on no eyes being detected from the first image.

11. The method as claimed in claim 8 , wherein the displaying comprises displaying a plurality of images received from a plurality of external apparatuses including the external apparatus, and

wherein the obtaining comprises determining whether the point of gaze is located in a preset region in each of the plurality of images.

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

determining a counterpart image among the plurality of images, the point of gaze being located in the preset region of the counterpart image, and

transmitting the third image to a corresponding external apparatus among the plurality of external apparatuses.

13. The method as claimed in claim 12 , further comprising transmitting the second image to remaining external apparatuses.