Representing digital images in a plurality of image processing states

• US 6,795,585 B1
• Filed: 07/16/1999
• Issued: 09/21/2004
• Est. Priority Date: 07/16/1999
• Status: Expired due to Term

• Current Assignee: Monument Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Eastman Kodak Company
• Inventors: Parada, Robert J., Gindele, Edward B., McCarthy, Ann L., Spaulding, Kevin E.
• Primary Examiner(s): Williams, Kimberly
• Assistant Examiner(s): Vida, Melanie
• Application Number:
  US09/354,808
• Time in Patent Office: 1,894 Days
• Field of Search: 382/254, 382/162, 382/523, 382/136, 382/1.9, 382/284, 382/260, 382/49, 382/173, 382/181, 382/224, 382/226
• US Class Current: 382/254
• CPC Class Codes: G06T 11/60 Editing figures and text; Combining figures or text
• CPC Class Codes: G06T 5/00 Image enhancement or restoration

Abstract

A method for representing a digital image in a plurality of image processing states using at least one reference digital image and at least one residual image comprising the steps of manipulating an input digital image using at least one digital image processing enhancement step to form at least one additional digital image in a different image processing state; designating at least one of the digital images to be a reference digital image in a reference image processing state; and determining at least one residual image representing differences between one of the reference digital images and one of the additional digital images, whereby the residual image(s) and the reference digital image(s) can be used to form digital image(s) in different image processing states.

Claims

1. A method for representing a digital image in a plurality of image processing states using at least one reference digital image and at least one residual image comprising the steps of:

(a) manipulating an input digital image using at least one digital image processing enhancement step to form at least one additional digital image in a different image processing state;

(b) designating at least one of the digital images to be a reference digital image in a reference image processing state; and

(c) determining at least one residual image representing differences between one of the reference digital images and one of the additional digital images, whereby the residual image(s) and the reference digital image(s) can be used to form digital image(s) in different image processing states.

2. The method of claim 1 wherein the residual image(s) are associated with the appropriate reference digital image(s).

3. The method of claim 2 wherein at least one residual image is stored as metadata in a digital image file.

4. The method of claim 2 wherein the reference digital image is stored in one digital image file, and at least one residual image is stored in a different, associated digital image file.

5. The method of claim 1 wherein at least one reference digital image is the input digital image.

6. The method of claim 1 wherein at least one reference digital image is a final processed digital image in a final image processing state.

7. The method of claim 6 wherein at least one reference digital image is adapted for display on a reference output device.

8. The method of claim 7 further including the step of previewing the digital image by displaying at least one reference digital image on an output device having characteristics that are similar to the reference output device.

9. The method of claim 7 further including the step of using at least one residual image together with the associated reference digital image to form a modified digital image appropriate for display on an output device having different characteristics than the reference output device.

10. The method of claim 1 wherein at least one reference digital image is a color digital image having a plurality of color channels and at least one of the residual images is determined using only a subset of the color channels.

11. The method of claim 1 wherein at least one residual image is of a different spatial resolution than the associated reference digital image.

12. The method of claim 11 wherein the different-resolution residual image is resampled to form a residual image having the same spatial resolution as the associated reference digital image.

13. The method of claim 1 wherein individual residual images are determined to store the changes introduced by individual digital image processing enhancement steps.

14. The method of claim 1 wherein the residual images are determined such that they can be used independently, with the reference digital image, to form different digital images.

15. The method of claim 1 wherein at least two residual images correspond to image processing states in branch imaging chains.

16. The method of claim 1 wherein a set of residual images is determined such that each residual image in the set of residual images corresponds to a subset of pixels in the associated reference digital image.

17. The method of claim 1 wherein residual image data is determined only for the subset of pixels affected by the digital image processing enhancement step(s).

18. The method of claim 1 wherein at least one residual image is encoded as the differences in code values between digital images in two different image processing states.

19. The method of claim 1 further including using a spatial frequency decomposition technique on at least one residual image to produce one or more spatial-frequency-decomposed residual image(s).

20. The method of claim 19 wherein individual spatial frequency bands of the spatial-frequency-decomposed residual image(s) are individually adjusted and used to form one or more digital image(s) in image processing state(s) different from the original image processing states.

21. The method of claim 1 wherein a data compression technique is applied to at least one residual image.

22. The method of claim 1 wherein at least one digital image processing enhancement step is a capture-process-correction step.

23. The method of claim 1 wherein at least one digital image processing enhancement step is a tonescale-adjustment step.

24. The method of claim 1 wherein at least one digital image processing enhancement step is a color-adjustment step.

25. The method of claim 1 wherein at least one digital image processing enhancement step is a defect-correction step.

26. The method of claim 1 wherein at least one digital image processing enhancement step is a sharpness-adjustment step.

27. The method of claim 1 wherein at least one digital image processing enhancement step is an artistic-rendering step.

28. The method of claim 1 wherein at least one digital image processing enhancement step affects only a subset of pixels in the digital image on which it operates.

29. A method of forming one or more reconstructed digital image(s) from one or more reference digital image(s) and one or more residual image(s) which are produced by the steps of;

manipulating an input digital image using at least one digital image processing enhancement step to form at least one additional digital image in a different image processing state;

designating at least one of the digital images to be a reference digital image in a reference image processing state; and

determining at least one residual image representing differences between one of the reference digital images and one of the additional digital images, whereby the residual image(s) and the reference digital image(s) can be used to form digital image(s) in different image processing states;

such method comprising the steps of;

(a) receiving one or more reference digital image(s) and one or more residual image(s); and

(b) combining one reference digital image and one or more residual image(s) to for each of one or more reconstructed digital image(s) corresponding to original image processing state(s).

30. A method of forming one or more new digital image(s) from one or more reference digital image(s) and one or more residual image(s) which are produced by the steps of;

manipulating an input digital image using at least one digital image processing enhancement step to form at least one additional digital image in a different image processing state;

designating at least one of the digital images to be a reference digital image in a reference image processing state; and

determining at least one residual image representing differences between one of the reference digital images and one of the additional digital images, whereby the residual image(s) and the reference digital image(s) can be used to form digital image(s) in different image processing states;

such method comprising the steps of;

(a) receiving one or more reference digital image(s) and one or more residual image(s); and

(b) combining one or more reference digital image(s) and one or more residual image(s) to form each of one or more digital image(s) in image processing state(s) different from the original image processing states.

31. The method of claim 30 further including forming a digital image from a weighted mixture of two or more different image processing states.

32. The meth of claim 31 wherein the process of determining the weighted mixture of image processing states includes the step of numerically scaling at least one of the associated residual images.

33. The method of claim 31 wherein the weighted mixture of image processing states is interactively user specified.

34. A method for representing and manipulating a digital image in a plurality of image processing states using at least one reference digital image and at least one residual image comprising the steps of:

(a) manipulating an input digital image using at least one digital image processing enhancement step to form at least one additional digital image having different image processing state;

(b) designating at least one of the digital images to be a reference digital image for a reference image processing state;

(c) determining at least one residual image representing differences between one of the reference digital images and one of the additional digital images, whereby the residual image(s) and the reference digital image(s) can be used to form digital image(s) in different image processing states; and

(d) using at least one residual image together with the appropriate reference digital image and a specified desirable modification to the digital image to produce a modified digital image.

35. The method of claim 34 wherein the desirable modification is interactively user-specified.

36. The method of claim 34 wherein the desirable modification is determined by applying an automatic algorithm.