Image processing

• US 20050286763A1
• Filed: 06/23/2005
• Published: 12/29/2005
• Est. Priority Date: 06/24/2004
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Hunter, Andrew Arthur, Pollard, Stephen B.
• Granted Patent: US 7,679,779 B2
• Time in Patent Office: Days
• US Class Current: 382/167
• CPC Class Codes: G06T 11/001 Texturing; Colouring; Generation of texture or colour inpainting G06T5/77
• CPC Class Codes: H04N 1/58 Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction H04N1/62 takes precedence

Abstract

A method of digitally processing data for use in representing an image, comprising scaling edge data relating to edges in at least one colour-adjusted component of the image using unadjusted data relating to a colour-unadjusted component of the image, and a device operable in accordance with the method.

Claims

1. A method of digitally processing data for use in representing an image, comprising:

scaling edge data relating to edges in at least one colour-adjusted component of the image using unadjusted data relating to a colour-unadjusted component of the image.

2. A method as claimed in claim 1, wherein the unadjusted data relates to higher spatial frequency content of the colour-unadjusted component of the image.

3. A method as claimed in claim 1, wherein the unadjusted data relates to a first colour space, and said edge data relates to a second colour space, wherein the first or second colour spaces comprise any one of the RGB, sRGB or MYC colour spaces.

4. A method of digitally processing image data, comprising:

processing starting image data relating to a first colour space in order to generate first lower spatial frequency image data relating to the first colour space;

processing the first lower spatial frequency image data in order to generate second lower spatial frequency image data relating to a second colour space;

using the starting image data to generate first higher spatial frequency image data for one colour component relating to the first colour space;

using the first and second lower spatial frequency image data respectively to generate first and second edge data relating to edges in the first and second lower spatial frequency image data for the respective colour spaces;

using the first and second edge data for the respective colour spaces and said first higher spatial frequency image data to generate scaled higher spatial frequency image data relating to the second colour space; and

using the scaled higher spatial frequency image data and said second lower spatial frequency image data in order to generate output image data relating to the second colour space.

5. A method as claimed in claim 4, wherein the generation of said first higher spatial frequency image data is effected using said first lower spatial frequency image data.

6. A method as claimed in claim 4, wherein the first colour space is a MYC colour space, and the second colour space is either of RGB or sRGB colour spaces.

7. An image processing device operable to process data for use in representing an image, the device being further operable to:

scale edge data relating to edges in at least one colour-adjusted component of the image using unadjusted data relating to a colour-unadjusted component of the image.

8. A device as claimed in claim 7, further comprising an image capture element operable to generate data representing the image in a first colour space.

9. A device as claimed in claim 8, wherein the first colour space is a MYC colour space, and the or each colour adjusted image component is RGB or sRGB colour spaces.

10. An image processing device operable to:

process starting image data relating to a first colour space in order to generate first lower spatial frequency image data relating to the first colour space;

process the first lower spatial frequency image data in order to generate second lower spatial frequency image data relating to a second colour space;

use the starting image data to generate first higher spatial frequency image data for one colour component relating to the first colour space;

use the first and second lower spatial frequency image data respectively to generate first and second edge data relating to edges in the first and second lower spatial frequency image data for the respective colour spaces;

use the first and second edge data for the respective colour spaces and said first higher spatial frequency image data to generate scaled higher spatial frequency image data relating to the second colour space; and

use the scaled higher spatial frequency image data and said second lower frequency image data in order to generate output image data relating to the second colour space.

11. A device as claimed in claim 10, further operable to display at least a portion of an image represented by said output image data.

12. An image processing device operable to scale edge data relating to edges in at least one colour-adjusted component of the image using unadjusted data relating to a colour-unadjusted component of the image.

13. A computer program product comprising a computer readable medium having thereon computer program instructions, such that, when said program is loaded in a memory of the computer, said instructions cause the computer to process image data to scale edge data relating to edges in at least one colour-adjusted component of the image using unadjusted data relating to a colour-unadjusted component of the image.

14. A program stored on computer-readable medium, the program comprising instructions executable by a computer so as to cause the computer to process image data to scale edge data relating to edges in at least one colour-adjusted component of the image using unadjusted data relating to a colour-unadjusted component of the image.

15. A logic circuit configured to operate scale edge data relating to edges in at least one colour-adjusted component of the image using unadjusted data relating to a colour-unadjusted component of the image.