Color-sample image generator, color-sample generator, color-sample generation method, and color-sample
A color sample image generator, a color-sample generator, and a color sample generation method are provided. The color-sample image generator produces a color sample, and lightness of every pixel of a first area of a first image from which the color sample is to be extracted is measured and all the pixels are arranged in a second area of a second image that is different from the first area based on lightness level. The color-sample generator and the color-sample generation method includes obtaining all pixels of a first area of a first image from which a color sample is to be extracted, measuring a level of lightness of each of the obtained pixels of the first area, and rearranging each of the pixels whose lightness has been measured in a second area of a second image that is different from the first area.
1. A color-sample image generator for producing a color sample, comprising:
processing circuitry configured to
measure lightness of every pixel of a first area of a first image,
arrange all the pixels in a second area of a second image that is different from the first area, based on lightness level, and
linearly interpolate a group of pixels duplicated from all the pixels, according to a number of pixels of the second area, and arrange the linearly interpolated pixels in the second area.
2. The color-sample image generator according to claim 1 , wherein the processing circuitry is further configured to rearrange pixels of equal level of lightness among the group of pixels duplicated from all the pixels, based on a level of color saturation in descending order.
3. The color-sample image generator according to claim 1 , wherein the processing circuitry is further configured to arrange the group of pixels duplicated from all the pixels, from an upper row to a lower row of the second area.
4. The color-sample image generator according to claim 3 , wherein the processing circuitry is further configured to rearrange the group of pixels based on hue angle on a row-by-row basis.
5. The color-sample image generator according to claim 4 , wherein the processing circuitry is further configured to rearrange the group of pixels based on the hue angle on a row-by-row basis, which attenuates unnatural appearance in color in the second area.
6. The color-sample image generator according to claim 1 , wherein all the pixels of the first area correspond to an object in the first image.
7. A color sample generated by the color-sample image generator according to claim 1 .
8. A color-sample generator, comprising:
processing circuitry configured to
obtain all pixels of a first area of a first image,
measure a level of lightness of each obtained pixel of the first area, and
rearrange each of the pixels whose lightness has been measured, based on the level of lightness, in a second area of a second image that is different from the first area, to generate the color sample,
wherein the processing circuitry is further configured to linearly interpolate a group of pixels duplicated from all the pixels, according to a number of pixels of the second area, and arrange the linearly interpolated pixels in the second area.
9. A color-sample generation method, comprising:
obtaining, by processing circuitry, all pixels of a first area of a first image;
measuring, by the processing circuitry, a level of lightness of each of the obtained pixels of the first area;
rearranging, by the processing circuitry, each of the pixels whose lightness has been measured based on the level of lightness, in a second area of a second image that is different from the first area;
linearly interpolating, by the processing circuitry, a group of pixels duplicated from all the pixels, according to a number of pixels of the second area, and arrange the linearly interpolated pixels in the second area; and
storing in a memory the second image having the pixels that are rearranged based on the level of lightness as a color sample.