Image processing method, image processing device and image processing system
View Patent ↗An image processing method and image processing device which carry out color replacement of any color of process colors, by using another process color or a spot color which is not a process color. CMYK values of raster data of a color for which color replacement is designated, among process colors of an image object, are converted by using CMYK values of a replacement color stored in advance, and raster data of the replacement color is generated. Then, this raster data is composed with raster data of a remaining color which is not subjected to color replacement, or raster data of another color replaced in. At this time, color correction is carried out on raster data of remaining process colors.
1. An image processing device, comprising:
a receiving section that receives a print job including at least one of image data and drawing data to be printed;
a storing section that stores a CMYK value of a spot color;
a detecting section that detects whether a process color included in at least one of the image data and the drawing data is a first process color being designated to be replaced by a spot color or a second process color not being designated to be replaced by a spot color;
a replacing section that replaces a CMYK value of the first processing color with the CMYK value of the spot color stored in the storing section when the detecting section detects that the process color included in at least one of the image data and the drawing data is the first process color;
a color correcting section that carries out color correction of a CMYK value of the second process color when the detecting section detects that the process color included in at least one of the image data and the drawing data is the second process color; and
a generating section that generates a composed CMYK value by composing the CMYK value of the spot color replaced by the replacing section and the CMYK value of the second process color to which the color correction is carried out by the color correcting section.
2. The image processing device according to claim 1 , wherein
the detecting section detects whether the process color is the first process color or the second process color in units of one pixel of an image,
the replacing section that replaces the CMYK value of the first process color with the CMYK value of the spot color in units of one pixel,
the color correcting section carries out the color correction in units of one pixel, and
the generating section generates the composed CMYK value in units of one pixel.
3. The image processing device according to claim 1 , further comprising an output section that outputs the composed CMYK value to a printer.
4. The image processing device according to claim 1 , wherein the receiving section receives the print job from a client terminal through a network.
5. An image processing method, comprising:
receiving a print job including at least one of image data and drawing data to be printed;
storing a CMYK value of a spot color;
detecting whether a process color included in at least one of the image data and the drawing data is a first process color being designated to be replaced by a spot color or a second process color not being designated to be replaced by a spot color;
replacing a CMYK value of the first processing color with the CMYK value of the spot color stored in the storing section when the detecting detects that the process color included in at least one of the image data and the drawing data is the first process color;
correcting a CMYK value of the second process color when the process color included in at least one of the image data and the drawing data is the second process color; and
generating a composed CMYK value by composing the CMYK value of the spot color and the CMYK value of the second process color which is color corrected.
6. The image processing method according to claim 5 , wherein
detecting whether the process color is the first process color or the second process color in units of one pixel of an image,
replacing the CMYK value of the first process color with the CMYK value of the spot color in units of one pixel,
correcting in units of one pixel, and
generating the composed CMYK value in units of one pixel.
7. The image processing method according to claim 5 , further comprising outputting the composed CMYK value to a printer.
8. The image processing method according to claim 5 , wherein receiving the print job is from a client terminal through a network.