IMAGING DEVICE, CONTROL METHOD, AND PROGRAM

• US 20060279758A1
• Filed: 06/07/2006
• Published: 12/14/2006
• Est. Priority Date: 06/08/2005
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Myoki, Yutaka
• Granted Patent: US 8,355,164 B2
• Time in Patent Office: Days
• US Class Current: 358/1.130
• CPC Class Codes: G06K 15/02 using printers
• CPC Class Codes: G06K 15/1825 Adapting the print data to an output condition, e.g. object trapping trapping on rasterized data H04N1/58
• CPC Class Codes: G06K 2215/0094 Colour printing
• CPC Class Codes: H04N 1/60 Colour correction or control H04N1/54 takes precedence

Abstract

A printing control method comprises a rendering step for rendering a description language document, a color matching step for converting color information specified in the description language document into color information for a printing device which is to print the description language document, and a control step for controlling whether to perform the conversion in the color matching step before the rendering or following the rendering. Appropriately controlling whether to perform color matching before rendering or following rendering enables color reproducibility to be improved.

Claims

1. An imaging device comprising:

rendering means for rendering a description language document;

color matching means for converting color information specified in said description language document into color information for a imaging device which is to image said description language document; and

selecting means for determining, in a case wherein alpha blend rendering is necessary for said description language document, whether to perform said converting by said color matching means before said rendering or following said rendering, and selecting one or the other based on the determination results.

2. The imaging device according to claim 1, wherein the selection by said selecting means is made upon verifying the results of the case wherein said converting by said color matching means is performed before said rendering and the case wherein said converting is performed following said rendering.

3. The imaging device according to claim 1, further comprising holding means for holding the conditions used for selection by said selecting means and the selection results thereof, wherein the information held in said holding means is used at the time of performing alpha rendering under the same conditions as said conditions.

4. The imaging device according to claim 1, said selecting means comprising:

setting means for setting whether to perform said conversion by said color matching means before said rendering or following said rendering; and

control means for effecting control, in the event of rendering a specific rending command at said rendering means, such that said conversion by said color matching means is performed before said rendering regardless of the settings of said setting means.

5. The imaging device according to claim 4, wherein said particular rendering command is a gradient command.

6. An imaging control method comprising:

a rendering step for rendering a description language document;

a color matching step for converting color information specified in said description language document into color information for an imaging device which is to image said description language document; and

a selecting step for determining, in a case wherein alpha blend rendering is necessary for said description language document, whether to perform the conversion in said color matching step before said rendering or following said rendering, and selecting one or the other based on the determination results.

7. The method according to claim 6, wherein the selection in said selecting step is made upon verifying the results of the case wherein said conversion in said color matching step is performed before said rendering and the case wherein said conversion is performed following said rendering.

8. The method according to claim 6, further comprising a holding step for holding the conditions used for selection in said selecting step and the selection results thereof, wherein the information held in said holding step is used at the time of performing alpha rendering under the same conditions as said conditions.

9. An imaging control method according to claim 6 in which the selecting step includes:

a setting step for setting whether to perform said conversion in said color matching step before said rendering or following said rendering; and

a control step for effecting control, in the event of rendering a specific rending command in said rendering step, such that said conversion in said color matching step is performed before said rendering regardless of the settings in said setting step.

10. A method according to claim 9, wherein said particular rendering command is a gradient command.

11. An imaging control method comprising:

a rendering step for rendering a description language document;

a color matching step for converting color information specified in said description language document into color information for an imaging device which is to image said description language document; and

a control step for controlling whether to perform said conversion in said color matching step before said rendering or following said rendering.

12. A program processed by a computer, said program comprising:

code for a rendering step for rendering a description language document;

code for a color matching step for converting color information specified in said description language document into color information for an imaging device which is to image said description language document; and

code for a selecting step for determining, in a case wherein alpha blend rendering is necessary for said description language document, whether to perform the conversion in said color matching step before said rendering or following said rendering, and selecting one or the other based on the determination results.

13. The program according to claim 12, wherein the selection in said selecting step is made upon verifying the results of the case wherein said conversion in said color matching step is performed before said rendering and the case wherein said conversion is performed following said rendering.

14. The program according to claim 12, further comprising code for a holding step for holding the conditions used for selection in said selecting step and the selection results thereof, wherein the information held in said holding step is used at the time of performing alpha rendering under the same conditions as said conditions.

15. The program according to claim 12, in which the code for said selecting step includes:

code for a setting step for setting whether to perform said conversion in said color matching step before said rendering or following said rendering; and

code for a control step for effecting control, in the event of rendering a specific rending command in said rendering step, such that said conversion in said color matching step is performed before said rendering regardless of the settings in said setting step.

16. The program according to claim 15, wherein said particular rendering command is a gradient command.

17. A program processed by a computer, said program comprising:

code for a rendering step for rendering a description language document;

code for a color matching step for converting color information specified in said description language document into color information for an imaging device which is to image said description language document; and

code for a control step for controlling whether to perform said conversion in said color matching step before said rendering or following said rendering.

18. An imaging device comprising:

rendering means for rendering a description language document;

color matching means for converting color information specified in said description language document into color information for an imaging device which is to image said description language document;

setting means for setting whether to perform said conversion by said color matching means before said rendering or following said rendering; and

control means for effecting control, in the event of rendering a specific rending command at said rendering means, such that said conversion by said color matching means is performed before said rendering regardless of the settings of said setting means.

19. The imaging device according to claim 18, wherein said particular rendering command is a gradient command.

20. An imaging control method comprising:

a rendering step for rendering a description language document;

a color matching step for converting color information specified in said description language document into color information for an imaging device which is to image said description language document;

a setting step for setting whether to perform said conversion in said color matching step before said rendering or following said rendering; and

a control step for effecting control, in the event of rendering a specific rending command in said rendering step, such that said conversion in said color matching step is performed before said rendering regardless of the settings in said setting step.

21. The method according to claim 20, wherein said particular rendering command is a gradient command.

22. A program processed by a computer, said program comprising:

code for a rendering step for rendering a description language document;

code for a color matching step for converting color information specified in said description language document into color information for an imaging device which is to image said description language document;

code for a setting step for setting whether to perform said conversion in said color matching step before said rendering or following said rendering; and

code for a control step for effecting control, in the event of rendering a specific rending command in said rendering step, such that said conversion in said color matching step is performed before said rendering regardless of the settings in said setting step.

23. The program according to claim 22, wherein said particular rendering command is a gradient command.

24. An imaging control method comprising:

a rendering step for rendering a description language document;

a color matching step for converting color information specified in said description language document into color information for an imaging device which is to image said description language document; and

a control step for controlling whether to perform said conversion in said color matching step before said rendering or following said rendering.

25. A program processed by a computer, said program comprising:

code for a rendering step for rendering a description language document;

code for a color matching step for converting color information specified in said description language document into color information for an imaging device which is to image said description language document; and

code for a control step for controlling whether to perform said conversion in said color matching step before said rendering or following said rendering.