Image processing device, image processing method, image forming apparatus, image processing program, and storage medium
AssigneeSharp Kabushiki Kaisha
InventorMichiko Fujiwara
Life of this patent
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Abstract
The present invention includes a plurality of color correction tables respectively corresponding to a plurality of groups into which a page-background color is sorted. It is determined which group a page-background color of image data in a block that belongs to a page-background region belongs to. Consequently, color correction processing is performed by using a color correction table corresponding to the group determined. This makes it possible to carry out appropriate color correction processing according to the page-background color of an original document.
Claims8
An image processing device which subjects image data read from an original document to image processing according to a page-background color corresponding to the of the original document, comprising:
- a page-background color removal section which removes the page-background color from the image data;
- a page-background color determination section which sorts the image data into either one of a plurality of groups according to the page-background color of the original document;
- a plurality of color correction tables being provided so as to respectively correspond to respective page-background colors of the groups, each of the color correction tables having (a) image data before subjected to color correction and (b) image data after subjected to color correction, which are associated with each other;
- and
- a color correction processing section which subjects the image data to color correction by using a color correction table, among the color correction tables, corresponding to the group into which the image data is sorted by the page-background color determination section,
- wherein said color correction tables are set so as to allow image data made of colors in a first color space to be converted into image data made of colors in a second color space.
An image processing method of subjecting image data read from an original document to image processing according to a page-background color of the original document, comprising:
- a page-background color removal step of removing the page-background color from the image data;
- a page-background color determination step of sorting the image data into either one of a plurality of groups according to the page-background color of the original document;
- and
- a color correction step of subjecting the image data to color correction by using a color correction table corresponding to the group into which the image data has been sorted in the page-background color determination step among a plurality of color correction tables being provided so as to respectively correspond to respective page-background colors of the groups, each of the color correction tables having (a) image data before subjected to color correction and (b) image data after subjected to color correction, which are associated with each other,
- wherein said color correction tables are set so as to allow image data made of colors in a first color space to be converted into image data made of colors in a second color space.
An image forming apparatus including:
- an image processing device which subjects image data read from an original document to image processing according to a page-background color of the original document;
- and
- an image formation section which forms an image corresponding to the image data onto a recording material,
- wherein:
- the image processing device includes:
- a page-background color removal section which removes the page-background color from the image data;
- a page-background color determination section which sorts the image data into either one of a plurality of groups according to the page-background color of the original document;
- a plurality of color correction tables being provided so as to respectively correspond to respective page-background colors of the groups, each of the color correction tables having (a) image data before subjected to color correction and (b) image data after subjected to color correction, which are associated with each other;
- and
- a color correction processing section which subjects the image data to color correction by using a color correction table, among the color correction tables, corresponding to the group into which the image data is sorted by the page-background color determination section,
- wherein said color correction tables are set so as to allow image data made of colors in a first color space to be converted into image data made of colors in a second color space.
A computer-readable storage medium which stores an image processing program for operating an image processing device which subjects image data read from an original document to image processing according to a page-background color of the original document, the image processing device including:
- a page-background color removal section which removes the page-background color from the image data;
- a page-background color determination section which sorts the image data into either one of a plurality of groups according to the page-background color of the original document;
- a plurality of color correction tables being provided so as to respectively correspond to respective page-background colors of the groups, each of the color correction tables having (a) image data before subjected to color correction and (b) image data after subjected to color correction, which are associated with each other;
- and
- a color correction processing section which subjects the image data to color correction by using a color correction table, among the color correction tables, corresponding to the group into which the image data is sorted by the page-background color determination section, wherein:
- the image processing program causes a computer to function as the page-background color removal section, the page-background color determination section, and the color correction processing section,
- wherein said color correction tables are set so as to allow image data made of colors in a first color space to be converted into image data made of colors in a second color space.
Dependencies are inferred from the claim text.