APPARATUS AND METHODS FOR SELECTIVE COLOR EDITING OF COLOR PROFILES

• US 20080062443A1
• Filed: 11/08/2006
• Published: 03/13/2008
• Est. Priority Date: 09/11/2006
• Status: Active Grant

• Current Assignee: Fiery LLC
• Original Assignee: Electronics For Imaging Incorporated
• Inventors: Olson, Thor A.
• Granted Patent: US 8,013,871 B2
• Time in Patent Office: Days
• US Class Current: 358/1.9
• CPC Class Codes: H04N 1/6011 with simulation on a subsidiary picture reproducer H04N1/622 takes precedence; matching two or more picture reproducers H04N1/6052

Abstract

Apparatus and methods are provided for editing color profiles. In particular, an output color including a first hue, a first lightness and a first chroma is received, and a first range of lightness values and a first range of chroma values for all output color values in the color profile are determined. A second range of lightness values of output color values in the color profile that have the first hue and the first chroma, and a second range of chroma values of output color values in the color profile that have the first hue and the first lightness are determined. Graphical representations of the first and second ranges of lightness values, and the first and second ranges of chroma values are distinctly displayed on a display device. A user interface is provided that allows a user to create an edited output color including a second hue, a second lightness and a second chroma, and dynamically modify the second range of lightness values and the second range of chroma values based on the edited output color.

Claims

1. A method for editing an color profile for an output device having a color gamut, the color profile comprising a plurality of output color values, the method comprising:

receiving an output color comprising a first hue, a first lightness and a first chroma;

determining a first range of lightness values and a first range of chroma values for all output color values in the color profile;

determining a second range of lightness values of output color values in the color profile that have the first hue and the first chroma;

determining a second range of chroma values of output color values in the color profile that have the first hue and the first lightness;

distinctly displaying on a display device graphical representations of the first and second ranges of lightness values;

distinctly displaying on the display device graphical representations of the first and second ranges of chroma values;

providing a user interface that allows a user to create an edited output color comprising a second hue, a second lightness and a second chroma; and

dynamically modifying the second range of lightness values and the second range of chroma values based on the edited output color.

2. The method of claim 1, wherein the graphical representation comprises first and second slider bars displaying the first and second ranges of lightness values and the first and second ranges of chroma values, respectively.

3. The method of claim 1, further comprising:

determining a third range of lightness values that are out of the color gamut;

determining a third range of chroma values that are out of the color gamut;

and distinctly displaying on the display device graphical representations of the third range of lightness values and the third range of chroma values.

4. The method of claim 1, wherein distinctly displaying the first and second ranges of lightness values comprises displaying the first range of lightness values with a first width, and the second range of lightness values with a second width.

5. The method of claim 1, wherein distinctly displaying the first and second ranges of lightness values comprises displaying the first range of lightness values with a first color, and the second range of lightness values with a second color.

6. The method of claim 1, wherein distinctly displaying the first and second ranges of chroma values comprises displaying the first range of chroma values with a first width, and the second range of chroma values with a second width.

7. The method of claim 1, wherein distinctly displaying the first and second ranges of chroma values comprises displaying the first range of chroma values with a first color, and the second range of chroma values with a second color.

8. The method of claim 1, further comprising displaying indicia associated with the second lightness and the second chroma on the graphical representations of the first and second ranges of lightness values and the first and second ranges of chroma values, respectively.

9. The method of claim 8, wherein the user interface allows a user to modify the second lightness and the second hue by dragging the corresponding indicia on the graphical representations of the first and second ranges of lightness values and the first and second ranges of chroma values, respectively.

10. A method for editing a color profile for an output device having a color gamut, the color profile comprising a plurality of output color values, the method comprising:

receiving an output color comprising a first hue, a first lightness and a first chroma;

determining a first range of lightness values and a first range of chroma values for all output color values in the color profile;

determining a second range of lightness values of output color values in the color profile that have the first hue and the first chroma;

determining a second range of chroma values of output color values in the color profile that have the first hue and the first lightness;

displaying on a display device a first slider bar that comprises a first segment corresponding to the first range of lightness values and a second segment corresponding to the second range of lightness values;

distinctly displaying on the display device a second slider bar that comprises a first segment corresponding to the first range of chroma values and a second segment corresponding to the second range of chroma values;

providing a user interface that allows a user to create an edited output color comprising a second hue, a second lightness and a second chroma;

dynamically modifying the second segment of lightness values and the second segment of chroma values based on the edited output color.

11. The method of claim 10, further comprising:

determining a third range of lightness values that are out of the color gamut;

determining a third range of chroma values that are out of the color gamut; and

wherein the first slider bar comprises a third segment corresponding to the third range of lightness values and the second slider bar comprises a third segment corresponding to the third range of chroma values.

12. The method of claim 10, wherein the first segment of the first slider bar comprises a first width, and the second segment of the first slider bar comprises a second width.

13. The method of claim 10, wherein the first segment of the first slider bar comprises a first color, and the second segment of the first slider bar comprises a second color.

14. The method of claim 10, wherein the first segment of the second slider bar comprises a first width, and the second segment of the second slider bar comprises a second width.

15. The method of claim 10, wherein the first segment of the second slider bar comprises a first color, and the second segment of the second slider bar comprises a second color.

16. The method of claim 10, further comprising displaying indicia associated with the second lightness and the second chroma on the first and second slider bars respectively.

17. The method of claim 16, wherein the user interface allows a user to modify the second lightness and the second hue by dragging the corresponding indicia on the first and second slider bars, respectively.

18. A method for editing a color profile for an output device having a color gamut, the color profile comprising a plurality of output color values, the method comprising:

receiving an output color comprising a first hue;

displaying on a display device a two-dimensional cross-section of the color gamut along a constant hue plane at the first hue;

providing a user interface that permits a user to edit the lightness and saturation of the output color to create an edited output color; and

displaying on the display device indicia of the output color and the edited output color on the color profile cross section.

19. The method of claim 18, wherein:

the color gamut comprises a boundary between colors that are in-gamut and out of gamut; and

displaying further comprises displaying indicia of the gamut boundary on the color profile cross section display.

20. The method of claim 18, wherein the user interface permits the user to modify the edited output color by dragging the indicia of the edited output color on the color profile cross section display.