Image processing method and device therefor

1. A device comprising:

one or more processors;

a memory storing one or more programs including instructions which, when executed by the one or more processors, cause the one or more processors to:

control to obtain illumination information about illumination around the device,

control to determine, based on the illumination information, a thickness of an outline of an object included in content reproduced by the device, and

control to perform image processing on the content such that the outline of the object is represented as having the determined thickness,

a display displaying the content on which the image processing is performed,

detect a color of the object and represent the outline of the object by using a complementary color of the color of the object; and

a storage storing color information about a set of colors for which a user's color contrast sensitivity is equal to or less than a reference value,

wherein the one or more processors is further configured to:

detect the color of the object and a color of a background of the object, and

when the detected color of the object and the detected color of the background of the object are the set of colors, perform image processing on the content such that the outline of the object is represented as having the complementary color of the color of the object.

2. The device of claim 1 , wherein the one or more processors is further configured to detect text from the content and represent the text by using a first color and represent a background of the text by using a second color.

3. The device of claim 2 , wherein, when the reproduced content is a broadcasting program, the controller is further configured to:

detect at least one keyword from electronic program guide (EPG) information about the broadcasting program, and

when the text indicates the detected at least one keyword, represent the text by using the first color and represent the background of the text by using the second color.

4. The device of claim 2 , wherein the one or more processors is further configured to represent the text by using the first color and represent the background of the text by using the second color, based on a location and a size of the text.

5. The device of claim 1 , wherein the one or more processors is further configured to determine a contrast range of a first frame of the reproduced content and a second frame that is a frame next to the first frame and represent an outline of an object included in the second frame as having a thickness corresponding to the contrast range.

6. The device of claim 1 , wherein, the one or more processors is further configured to determine the thickness of the outline to be thicker as illumination in the obtained illumination information is higher.

7. The device of claim 1 , wherein the one or more processors is further configured to determine the thickness of the outline by further taking into account a user's brightness contrast sensitivity.

8. The device of claim 1 , wherein the one or more processors is further configured to:

detect a plurality of objects in the content,

determine a brightness value corresponding to each of the plurality of objects, and

perform image processing on the content such that each of the plurality of objects is represented as having the corresponding brightness value.

9. An image processing method comprising:

obtaining illumination information about illumination around a device;

determining, based on the illumination information, a thickness of an outline of an object included in content reproduced by the device;

performing image processing on the content such that the outline of the object is represented as having the determined thickness;

displaying the content on which the image processing is performed; and

detecting a color of the object and representing the outline of the object by using a complementary color of the color of the object,

wherein the representing of the outline of the object by using the complementary color of the color of the object comprises:

storing color information about a set of colors for which a user's color contrast sensitivity is equal to or less than a reference value,

detecting the color of the object and a color of a background of the object, and

when the detected color of the object and the detected color of the background of the object are the set of colors, performing image processing on the content such that the outline of the object is represented as having the complementary color of the color of the object.

10. The image processing method of claim 9 , further comprising:

detecting text from the content; and

representing the text by using a first color and representing a background of the text by using a second color.

11. The image processing method of claim 10 , wherein the representing of the text by using the first color and representing the background of the text by using the second color comprises:

when the reproduced content is a broadcasting program, detecting at least one keyword from electronic program guide (EPG) information about the broadcasting program; and

when the text indicates the detected at least one keyword, representing the text by using the first color and representing the background of the text by using the second color.

12. The image processing method of claim 9 , further comprising:

determining a contrast range of a first frame of the reproduced content and a second frame that is a frame next to the first frame; and

representing an outline of an object included in the second frame as having a thickness corresponding to the contrast range.

13. The image processing method of claim 9 , wherein the determining of the thickness of the outline of the object included in the reproduced content by the device, based on the illumination information, comprises determining the thickness of the outline to be thicker as illumination in the obtained illumination information is higher.

14. The image processing method of claim 9 , wherein the determining of the thickness of the outline of the object included in the content reproduced by the device, based on the illumination information, comprises determining the thickness of the outline by further taking into account a user's brightness contrast sensitivity.

15. The image processing method of claim 9 , further comprising:

detecting a plurality of objects in the content;

determining a brightness value corresponding to each of the plurality of objects; and

performing image processing on the content such that each of the plurality of objects is represented as having the corresponding brightness value.

16. A non-transitory computer-readable recording medium having recorded thereon a program for executing the method of claim 9 .