Display device and method of controlling the same
A display device which accurately detects and corrects only a facial region contained in an image and thereby prevents an error in which a background or neighboring object having a similar color to a skin color is corrected together with the facial region, and a method of controlling the same are provided. The display device includes an image processor configured to detect a face candidate region from an input image, based on information associated with at least one face color region, to detect a face region by applying a face detection algorithm to the detected face candidate region and to perform skin color correction on the detected face region, and a display configured to display the corrected input content.
1. A display device comprising:
an image processor configured to divide input content into a plurality of preset color regions, and detect a face candidate region from the input content, based on information associated with at least one face color region, configured to detect a face region by applying a face detection algorithm to the detected face candidate region and configured to perform skin color correction on the detected face region; and
a display configured to display the corrected input content;
wherein the image processor is configured to correct, when two or more of the color regions overlap each other, a color of a region of the input content, corresponding to the overlapping color region, to a target color having priority.
2. The display device according to claim 1 , wherein the face color region comprises a skin color region, a yellow region and a red region.
3. The display device according to claim 2 , further comprising a storage configured to store the information associated with the face color region.
4. The display device according to claim 2 , wherein the color regions comprise the skin color region.
5. The display device according to claim 4 , wherein the color regions comprise the skin color region, the yellow region, a green region, a blue region, a cyan region, a magenta region and the red region.
6. The display device according to claim 1 , wherein the image processor is configured to detect, as the face candidate region, a region of the input content corresponding to the face color region.
7. The display device according to claim 1 , wherein the image processor is configured to perform the skin color correction by correcting a color of the detected face region to a target skin color.
8. The display device according to claim 4 , wherein the image processor is configured to divide the input content into a plurality of regions corresponding to the color regions and detects, as the face candidate region, one of the divided regions corresponding to the face color region.
9. The display device according to claim 8 , wherein the image processor is configured to correct colors of the divided regions other than the face region to respective target colors.
10. The display device according to claim 1 , wherein the face detection algorithm comprises at least one from among knowledge-based methods, feature-based methods, template-matching methods and appearance-based methods.
11. A method of controlling a display device comprising:
dividing input content into a plurality of preset color regions;
detecting a face candidate region from the input content, based on information associated with at least one face color region;
detecting a face region by applying a face detection algorithm to the detected face candidate region;
performing skin color correction on the detected face region;
correcting, when two or more of the color regions overlap each other, a color of a region of the input content, corresponding to the overlapping color region, to a target color having priority.
12. The method according to claim 11 , wherein the face color region comprises a skin color region, a yellow region and a red region.
13. The method according to claim 12 ,
wherein the color regions comprise the skin color region.
14. The method according to claim 13 , wherein the color regions comprise the skin color region, the yellow region, a green region, a blue region, a cyan region, a magenta region and the red region.
15. The method according to claim 11 , wherein the detecting a face candidate region comprises detecting, as the face candidate region, a region of the input content corresponding to the face color region.
16. The method according to claim 11 , wherein the performing skin color correction comprises correcting a color of the detected face region to a target skin color.
17. The method according to claim 13 , wherein the detecting a face candidate region comprises detecting, as the face candidate region, one of the divided regions corresponding to the face color region.
18. The method according to claim 17 , further comprising correcting colors of the divided regions other than the face region to respective target colors.