Method and apparatus for processing image and recording medium storing program therefor
An image processing method and an apparatus are provided. The image processing method includes acquiring first image data including a plurality of target pixels, acquiring synthesis information by which a relationship, between each of the plurality of target pixels included in the first image data and at least one background pixel included in different image data to be synthesized with the first image data, is determined, and synthesizing a target pixel of the first image data with the at least one background pixel of second image data, based on the synthesis information according to determination of the second image data. The second image data includes the different image data to be synthesized with the first image data.
1. A method of image processing, comprising:
acquiring a first image including a color channel for a color value, an alpha channel, and a synthesis channel;
obtaining synthesis information from the synthesis channel of the first image, wherein the synthesis information includes a position and a value of a target pixel and a synthesis function of at least one target pixel of the first image for a synthesizing process; and
synthesizing the target pixel of the first image with a background pixel of a second image based on the synthesis information, in response to the second image being determined,
wherein the synthesizing comprises determining at least one background pixel in the second image for the at least one target pixel according to the synthesis function.
2. The method of claim 1 , wherein the synthesis information includes the synthesis function in which at least one or more of the following are set as parameters:
a color value and a transparency value of the target pixel,
position information of the target pixel in the first image,
a color value and a transparency value of the background pixel,
position information of the background pixel in the second image,
size information of the first image, and
size information of the second image.
3. The method of claim 2 , wherein the synthesizing of the target pixel comprises:
converting the color values and the transparency values of the target pixel and the background pixel based on the synthesis function; and
synthesizing a result of the converting with the color value of the target pixel according to a ratio determined based on the transparency value of the target pixel.
4. The method of claim 1 , wherein the first image comprises:
the color channel in which a color value of each of the plurality of target pixels is stored,
the alpha channel in which a transparency value of the background pixel is stored, and
the synthesis channel in which the synthesis information of each of the plurality of target pixels is stored.
5. A method of image processing, comprising:
acquiring a color value and a transparency value of each of a plurality of target pixels from a color value and an alpha channel included in a first image;
determining a position and a value of a target pixel included in the first image and a synthesis function of at least one target pixel for a synthesizing process based on the color value and the transparency value of each of the plurality of target pixels;
generating synthesis information based on the determined position and the value of the target pixel; and
storing the synthesis information of each of the plurality of target pixels in a synthesis channel included in the first image,
wherein, in response to a second image being determined, at least one background pixel in the second image for the at least one target pixel is determined according to the synthesis function and the at least one target pixel of the first image is synthesized with the at least one background pixel of the second image data based on the synthesis information.
6. An apparatus for image processing, comprising:
an inputter configured to acquire a first image including a color channel for a color value, an alpha channel, and a synthesis channel;
a decoder configured to obtain synthesis information from the synthesis channel of the first image, wherein the synthesis information includes a position and a value of a target pixel and a synthesis function of at least one target pixel of the first image for a synthesizing process; and
at least one processor configured to determine at least one background pixel in a second image for the at least one target pixel according to the synthesis function in response to the second image being determined and synthesize a target pixel of the first image with a background pixel of the second image based on the synthesis information.
7. The apparatus of claim 6 , wherein the synthesis information includes the synthesis function in which a color value and a transparency value of the target pixel, position information of the target pixel in the first image, a color value and a transparency value of the background pixel, position information of the background pixel in the second image, size information of the first image, and size information of the second image are set as parameters.
8. The apparatus of claim 7 , wherein the at least one processor is further configured to:
convert the color values and the transparency values of the target pixel and the background pixel based on the synthesis function, and
synthesize a result of the converting with the color value of the target pixel according to a ratio determined based on the transparency value of the target pixel.
9. The apparatus of claim 6 , wherein the first image comprises:
the color channel in which a color value of each of the plurality of target pixels is stored,
the alpha channel in which a transparency value of the background pixel is stored, and
the synthesis channel in which the synthesis information of each of the plurality of target pixels is stored.
10. An apparatus for image processing, comprising:
an image acquirer configured to acquire a first image;
a decoder configured to acquire a color value and a transparency value of each of a plurality of target pixels from a color value and an alpha channel included in the first image; and
at least one processor configured to:
determine a position and a value of a target pixel included in the first image and a synthesis function of at least one target pixel for a synthesizing process based on the color value and the transparency value of each of the plurality of target pixels,
generate synthesis information based on the determined position and the value of the target pixel, and
store the synthesis information of each of the plurality of target pixels in a synthesis channel included in the first image,
wherein, in response to a second image being determined, at least one background pixel in the second image for the at least one target pixel is determined according to the synthesis function and the at least one target pixel of the first image is synthesized with the at least one background pixel of the second image data, based on the synthesis information.
11. A non-transitory computer-readable recording medium having recorded thereon at least one computer-readable program comprising commands, which when executed by a computer, performs a method, the method comprising:
acquiring a first image including a color channel for a color value, an alpha channel and a synthesis channel;
obtaining synthesis information from the synthesis channel of the first image, wherein the synthesis information includes a position and a value of a target pixel and a synthesis function of at least one target pixel of the first image for a synthesizing process; and
synthesizing the target pixel of the first image with a background pixel of a second image based on the synthesis information, in response to the second image being determined,
wherein the synthesizing comprises determining at least one background pixel in the second image for the at least one target pixel according to the synthesis function.