Color processing device, color processing system and non-transitory computer readable medium storing program

• US 10,362,198 B2
• Filed: 10/16/2017
• Issued: 07/23/2019
• Est. Priority Date: 10/27/2016
• Status: Active Grant

• Current Assignee: Fujifilm Business Innovation Corp. (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Inventors: Iwafuchi, Toshihiro, Sakai, Noriko, Morimoto, Masashi
• Primary Examiner(s): Nguyen, Anh-Vinh T
• Application Number:
  US15/784,630
• Publication Number:
  US 20180124288A1
• Time in Patent Office: 645 Days
• Field of Search: None
• CPC Class Codes: G06T 11/001 Texturing; Colouring; Generation of texture or colour inpainting G06T5/77
• CPC Class Codes: H04N 1/6025 using look-up tables
• CPC Class Codes: H04N 1/6058 Reduction of colour to a range of reproducible colours, e.g. to ink- reproducible colour gamut

Abstract

A color processing device includes: a color data obtaining unit obtaining color data of a first image displayed on a display based on image data as first color data and color data of a second image formed on a recording medium by an image forming device based on the image data as second color data; and a conversion relationship creation unit creating a conversion relationship to correct the image data to be outputted to the image forming device based on the first color data and the second color data to integrate colors of the images displayed on the display and formed by the image forming device, wherein the conversion relationship creation unit creates the conversion relationship to increase a correction amount as a color to be corrected comes closer to gray and to reduce a correction amount as a color to be corrected comes closer to white.

Claims

1. A color processing device comprising:

at least one processor configured to execute;

a color data obtaining unit that obtains first color data that is measured from a first image being displayed on a display using image data and second color data that is measured from a second image formed on a recording medium by an image forming device using the image data; and

a conversion relationship creation unit that creates a conversion relationship to correct image data to be output to the image forming device using the first color data and the second color data to integrate colors of an image displayed on the display and an image formed on the recording medium by the image forming device,

wherein the conversion relationship increases a correction amount as a color to be corrected comes closer to gray and reduces a correction amount as a color to be corrected comes closer to white.

2. The color processing device according to claim 1, wherein the conversion relationship reduces a correction amount as a color to be corrected comes closer to black.

3. The color processing device according to claim 2, wherein the first image and the second image are white images, and

wherein the conversion relationship creation unit sets a direction of difference between the first color data and the second color data of the white images to be a direction of correction in a color space.

4. The color processing device according to claim 3, wherein the conversion relationship creation unit sets an amount of difference between the first color data and the second color data to be a maximum value of the correction amount.

5. The color processing device according to claim 4, wherein, as saturation on an outer shell of a color gamut of the image forming device is increased, the conversion relationship creation unit increases the correction amount related to gray that includes brightness at a point including the saturation.

6. The color processing device according to claim 3, wherein, as saturation on an outer shell of a color gamut of the image forming device is increased, the conversion relationship creation unit increases the correction amount related to gray that includes brightness at a point including the saturation.

7. The color processing device according to claim 2, wherein, as saturation on an outer shell of a color gamut of the image forming device is increased, the conversion relationship creation unit increases the correction amount related to gray that includes brightness at a point including the saturation.

8. The color processing device according to claim 1, wherein the first image and the second image are white images, and

wherein the conversion relationship creation unit sets a direction of difference between the first color data and the second color data of the white images to be a direction of correction in a color space.

9. The color processing device according to claim 8, wherein the conversion relationship creation unit sets an amount of difference between the first color data and the second color data to be a maximum value of the correction amount.

10. The color processing device according to claim 9, wherein, as saturation on an outer shell of a color gamut of the image forming device is increased, the conversion relationship creation unit increases the correction amount related to gray that includes brightness at a point including the saturation.

11. The color processing device according to claim 8, wherein, as saturation on an outer shell of a color gamut of the image forming device is increased, the conversion relationship creation unit increases the correction amount related to gray that includes brightness at a point including the saturation.

12. The color processing device according to claim 1, wherein, as saturation on an outer shell of a color gamut of the image forming device is increased, the conversion relationship creation unit increases the correction amount related to gray that includes brightness at a point including the saturation.

13. The color processing device according to claim 1, wherein the first color data and the second color data are measured by a colorimeter.

14. The color processing device according to claim 13, wherein the first color data and the second color data are measured by the colorimeter at a same location.

15. The color processing device according to claim 13, wherein the first color data and the second color data are measured by the colorimeter at a location where a user actually views both of the first image being displayed on the display and the second image formed on the recording medium.

16. A color processing system comprising:

a display configured to display an image using image data;

an image forming device configured to form an image on a recording medium using the image data; and

a color processing device configured to correct image data to be output to the image forming device to integrate colors in an image displayed on the display and an image formed by the image forming device,

wherein the color processing device comprises;

at least one processor configured to execute;

a color data obtaining unit that obtains first color data measured from a first image being displayed on the display using the image data and second color data measured from a second image formed on the recording medium by the image forming device using the image data; and

a conversion relationship creation unit that creates a conversion relationship to correct image data to be output to the image forming device using the first color data and the second color data to integrate colors of an image displayed on the display and an image formed on the recording medium by the image forming device,

wherein the conversion relationship increases a correction amount as a color to be corrected comes closer to gray and reduces a correction amount as a color to be corrected comes closer to white.

17. A non-transitory computer readable medium storing a program that causes a computer to execute functions, the functions comprising:

obtaining first color data measured from a first image being displayed on a display using image data and second color data measured from a second image formed on a recording medium by an image forming device using the image data; and

creating a conversion relationship to correct image data to be output to the image forming device using the first color data and the second color data to integrate colors of an image displayed on the display and an image formed on the recording medium by the image forming device,

wherein the conversion relationship increases a correction amount as a color to be corrected comes closer to gray and reduces a correction amount as a color to be corrected comes closer to white.