Method and apparatus of displaying portrait on display

1. A method of displaying a portrait on a display, comprising the steps of:

checking Exchangeable Image File Format (Exif) information of an image input through a lens;

checking a numerical aperture of the image using the Exif information;

determining whether the numerical aperture of the image is less than a predetermined reference aperture;

if the numerical aperture of the image is less than the predetermined reference aperture, determining the image as a character-photographed image;

executing face detection from the image;

setting a character area in the image according to a result of the face detection; and

magnifying and displaying the character area on the display.

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

determining the image as the character-photographed image if the photographing mode of the camera, at a time of photographing the image, is a character photographing mode.

3. The method as claimed in claim 1 , wherein the character area is set in a rectangular form enclosing a detected face.

4. The method as claimed in claim 1 , wherein the character area is set in such a manner that a detected face is positioned at a center of the character area.

5. The method as claimed in claim 1 , wherein setting a character area in the image on the basis of a result of face the detection comprises:

setting a horizontal length of the character area to a predetermined multiple of a horizontal width of a detected face;

setting a vertical length of the character area to a predetermined multiple of a vertical length of the detected face;

setting a position of abscissa of the character area in such a manner that the detected face is centrally positioned with reference to the position of abscissa; and

setting a position of ordinate of the character area in such a manner that the detected face is positioned at the top of the position of ordinate.

6. The method as claimed in claim 1 , wherein magnifying and displaying the character area on the display includes magnifying and displaying the character area in such a manner that the character area occupies an entire screen of the display.

7. The method as claimed in claim 1 , wherein magnifying and displaying the character area on the display comprises:

displaying the photographed image in such a manner that the image occupies an entire screen of the display; and

magnifying and additionally displaying the character area in a form of a new window at a specific part of the screen where the image is displayed.

8. The method as claimed in claim 7 , wherein the image does not overlap the character area on the displayed screen.

9. An apparatus of displaying a portrait on a display, comprising:

a character image determining unit configured to check Exchangeable Image File Format (Exif) information of an image input through a lens, check a numerical aperture of the image using the Exif information, determine whether the numerical aperture of the image is less than a predetermined reference aperture, and if the numerical aperture of the image is less than the predetermined reference aperture, determine the image as a character-photographed image;

a face detecting unit configured to execute face detection from the image;

a character area setting unit configured to set a character area in the image according to a result of the face detection;

a scaler configured to magnify the character area; and

a display configured to display the character area.

10. The apparatus as claimed in claim 9 , wherein the character image determining unit determines the image as the character-photographed image if the photographing mode of a camera, at a time of photographing the image, is a character photographing mode.

11. The apparatus as claimed in claim 9 , wherein the character area setting unit sets the character area in a rectangular form enclosing a detected face.

12. The apparatus as claimed in claim 9 , wherein the character area setting unit sets the character area in such a manner that a detected face is positioned at a center of the character area.

13. The apparatus as claimed in claim 9 , wherein the character area setting unit sets a horizontal length of the character area to a predetermined multiple of a horizontal width of a detected face, sets a vertical length of the character area to a predetermined multiple of a vertical length of the detected face, sets a position of abscissa of the character area in such a manner that the detected face is centrally positioned with reference to the position of abscissa, and sets a position of ordinate of the character area in such a manner that the detected face is positioned at the top of the position of ordinate.

14. The apparatus as claimed in claim 9 , wherein the display magnifies and displays the character area in such a manner that the character area occupies an entire screen of the display.

15. The apparatus as claimed in claim 9 , wherein the display displays the image in such a manner that the image occupies an entire screen of the display, and magnifies and additionally displays the character area in a form of a new window at a specific part of the screen where the image is displayed.

16. The apparatus as claimed in claim 15 , wherein the image does not overlap the character area on the displayed screen.