Image processing method using blurring and photographing apparatus using the same
An image processing method and a photography apparatus using the same are provided. The image processing method includes inputting at least one image; selecting a specific region of the at least one image input; extracting a luminance value of the selected specific region; and determining a blurring degree based on the extracted luminance value and performing image processing by blurring the selected specific region using the determined blurring degree.
1. An image processing method, comprising:
inputting at least one image;
selecting a specific region of the at least one image input;
extracting a luminance value of the selected specific region;
determining a blurring degree based on the extracted luminance value; and
performing image processing by blurring the selected specific region using the determined blurring degree,
wherein performing the image processing includes increasing a width of each of the bright portions of the selected specific region relatively more than a width of each of the dark portions of the selected specific region.
2. The image processing method according to claim 1 , wherein the performing of image processing includes blurring the selected specific region based on a weight value related to the extracted luminance value.
3. The image processing method according to claim 1 , wherein the performing of image processing includes blurring the selected specific region by increasing the blurring degree, when the extracted luminance value is large.
4. The image processing method according to claim 1 , wherein the performing of image processing includes blurring the selected specific region by reducing the blurring degree, when the extracted luminance value is small.
5. The image processing method according to claim 1 , wherein the performing of image processing includes processing the selected specific region so that the processed image satisfies the following equation:
blur
=
W
white
-
ip
W
black
-
ip
W
white
W
black
>
1
where, W white denotes the width of each of the bright portions of an image before image processing in a contrast pattern graph, W black denotes the width of each of the dark portions of an image before image processing in the contrast pattern graph, W white-ip denotes a width of each of the bright portions of an image after image processing in the contrast pattern graph, and W black-ip denotes a width of each of the dark portions of an image after an image processing in the contrast pattern graph, wherein the contrast pattern graph is a graph showing an intensity of a contrast pattern.
6. The image processing method according to claim 1 , wherein the selecting of the specific region includes selecting the specific region based on an input from a user.
7. The image processing method according to claim 1 , wherein the selecting of the specific region includes selecting the specific region using position information of a subject or a distance information of a background within the input image.
8. The image processing method according to claim 1 , further comprising displaying the processed image.
9. The image processing method according to claim 1 , wherein the luminance value is defined as the following equation:
Luminance value= a*R+b*G+c*B (herein, a, b , and c are natural numbers and R, G and B are luminance values of color components of the at least one image).
10. The image processing method according to claim 1 , wherein the at least one image includes a two dimensional (2D) image or a three dimensional (3D) image.
11. The image processing method according to claim 1 , wherein the inputting of at least one image includes receiving an image generated from one or more camera modules.
12. A photography apparatus, comprising:
an image input unit which inputs at least one image; and
an image processing unit which selects a specific region of the at least one image input, determines a blurring degree based on a luminance value of the selected specific region, and performs image processing by blurring the selected specific region using the determined blurring degree,
wherein the image processing unit performs the image processing by increasing a width of each of the bright portions of the selected specific region relatively more than a width of each of the dark portions of the selected specific region.
13. The photography apparatus according to claim 12 , wherein the image processing unit blurs the selected specific regions based on a weight value related to the luminance value.
14. The photography apparatus according to claim 12 , wherein the image processing unit blurs the selected specific region by increasing the blurring degree, when the luminance value is large.
15. The photography apparatus according to claim 12 , wherein the image processing unit blurs the selected specific region by reducing the blurring degree, when the luminance value is small.
16. The photography apparatus according to claim 12 , wherein the image processing unit processes the selected specific region so that the processed image satisfies the following equation:
blur
=
W
white
-
ip
W
black
-
ip
W
white
W
black
>
1
where, W white denotes the width of each of the bright portions of an image before image processing in a contrast pattern graph, W black denotes the width of each of the dark portions of an image before image processing in the contrast pattern graph, W white-ip denotes a width of each of the bright portions of an image after image processing in the contrast pattern graph, and W black-ip denotes a width of each of the dark portions of an image after image processing in the contrast pattern graph, wherein the contrast pattern graph is a graph showing an intensity of a contrast pattern.
17. The photography apparatus according to claim 12 , wherein the image processing unit selects the specific region of the image via an input from a user and processes the selected specific region.
18. The photography apparatus according to claim 12 , wherein the image processing unit selects the specific region using position information of a subject or distance information of a background within the image.
19. The photography apparatus according to claim 12 , further comprising a display unit which displays the processed image.
20. The photography apparatus according to claim 12 , wherein the luminance value is defined as the following equation:
Luminance value= a*R+b*G+c*B (herein, a, b , and c are natural numbers and R, G and B are luminance values of color components of the at least one image).
21. The photography apparatus according to claim 12 , wherein the at least one image includes a two dimensional (2D) image or a three dimensional (3D) image.
22. The photography apparatus according to claim 12 , wherein the image input unit receives an image generated from one or more camera modules.