Patent US6282313B1 successfully refreshed from Google Patents.
US6282313B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Using a set of residual images to represent an extended color gamut digital image
Assignee: Monument Peak Ventures LLC
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Filing: 1998-09-28
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Granted: 2001-08-28
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Expires: 2018-09-28
Abstract
Abstract A method for representing a digital image having color values with an extended color gamut in a storage color space having a limited color gamut includes adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; representing the limited color gamut digital image in the storage color space; determining a set of residual images representing a difference between the extended color gamut digital image and the limited color gamut digital image; and associating the set of residual images with the limited color gamut digital image in the storage color space such that the associated residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
Inventors
- 👤 Ann L. McCarthy
- 👤 Kevin E. Spaulding
- 👤 Edward J. Giorgianni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:17
CPC Classifications
G; G06; G06T; G06T11/00; G06T11/10
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
135 words
A method for representing a digital image with an extended color gamut in a storage color space having a limited color gamut comprising: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) determining differences between the extended color gamut digital image and the limited color gamut digital image forming a set of residual images; and d) storing the set of residual images with the limited color gamut digital image in the storage color space such that the associated set of residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
Claim 2
Independent Claim
135 words
A method for representing a digital image with an extended color gamut in a storage color space having a limited color gamut comprising: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) determining differences between the extended color gamut digital image and the limited color gamut digital image forming a set of residual images; and d) storing the set of residual images with the limited color gamut digital image in the storage color space such that the associated set of residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
Claim 3
Dependent Claim
17 words
The method of claim 1 where the storage color space is a particular device dependent color space.
Claim 4
Dependent Claim
16 words
The method of claim 2 where the storage color space is a video RGB color space.
Claim 5
Dependent Claim
23 words
The method of claim 3 further including previewing the digital image by displaying the limited color gamut digital image on a video display.
Claim 6
Dependent Claim
18 words
The method of claim 1 where the storage color space is a particular limited color gamut color space.
Claim 7
Dependent Claim
36 words
The method of claim 1 where the limited color gamut digital image is determined by clipping colors that are outside the limited color gamut so that they are on the surface of the limited color gamut.
Claim 8
Dependent Claim
22 words
The method of claim 1 where the limited color gamut digital image is determined by using gamut mapping that preserves color appearance.
Claim 9
Dependent Claim
38 words
The method of claim 1 where the limited color gamut digital image is determined by modifying color values that are outside the limited color gamut so that they are mapped to color values within the limited color gamut.
Claim 10
Dependent Claim
26 words
The method of claim 1 where the extended color gamut digital image has a larger range of chroma values than the limited color gamut digital image.
Claim 11
Dependent Claim
24 words
The method of claim 1 where the extended color gamut digital image has a larger dynamic range than the limited color gamut digital image.
Claim 12
Dependent Claim
39 words
The method of claim 10 where the adjusting the color values of the extended color gamut digital image to determine the limited color gamut digital image includes applying a tonescale function to reduce the dynamic range of the image.
Claim 13
Dependent Claim
17 words
The method of claim 10 wherein the extended dynamic range digital image is a monochrome digital image.
Claim 14
Dependent Claim
22 words
The method of claim 1 where the extended color gamut digital image is a representation of the colors in an original scene.
Claim 15
Dependent Claim
35 words
The method of claim 13 where the limited color gamut digital image is determined by rendering the colors of the original scene to produce rendered color values that are desirable for a first output device.
Claim 16
Dependent Claim
53 words
The method of claim 14 where the set of residual images is determined by computing the difference between the rendered color values for the first output device and a second set of rendered color values that are desirable for a second output device having a larger color gamut than the first output device.
Claim 17
Dependent Claim
22 words
The method of claim 15 where the larger color gamut output device is a hypothetical output device having an idealized color gamut.
Claim 18
Dependent Claim
24 words
The method of claim 1 where the limited color gamut digital image is stored in a digital image file using a digital storage medium.
Claim 19
Dependent Claim
21 words
The method of claim 17 where the set of residual images is stored as additional data in the digital image file.
Claim 20
Dependent Claim
33 words
The method of claim 17 where a data compression technique is applied to the set of residual images before it is stored so that it uses a smaller amount of digital storage memory.
Claim 21
Dependent Claim
31 words
The method of claim 17 where the limited color gamut digital image is stored in the digital image file, and the residual image is stored in a separate digital image file.
Claim 22
Dependent Claim
36 words
The method of claim 1 further including using one or more residual images from the set of residual images together with the limited color gamut digital image to form a reconstructed extended color gamut digital image.
Claim 23
Dependent Claim
49 words
The method of claim 1 further including using one or more residual images from the set of residual images together with the limited color gamut digital image to form a digital image appropriate for display on an output device having a color gamut different that the limited color gamut.
Claim 24
Dependent Claim
20 words
The method of claim 1 where the extended color gamut digital image originates from a scan of a photographic negative.
Claim 25
Dependent Claim
20 words
The method of claim 1 where the extended color gamut digital image originates from a scan of a photographic transparency.
Claim 26
Dependent Claim
20 words
The method of claim 1 where the extended color gamut digital image originates from a scan of a photographic print.
Claim 27
Dependent Claim
17 words
The method of claim 1 where the extended color gamut digital image originates from a digital camera.
Claim 28
Dependent Claim
26 words
The method of claim 26 where each residual image in the set of residual images corresponds to a successively larger subset of the extended color gamut.
Claim 29
Dependent Claim
23 words
The method of claim 1 where the set of residual images includes a luminance residual image and one or more chrominance residual images.
Claim 30
Dependent Claim
27 words
The method of claim 28 where each residual image in the set of residual images is computed from the difference between two intermediate color gamut digital images.
Claim 31
Dependent Claim
23 words
The method of claim 29 where the subsets of image pixels are formed by partitioning the extended color gamut digital image into tiles.
Claim 32
Dependent Claim
13 words
The method of claim 30 where the desirable modification is interactively user specified.
Claim 33
Dependent Claim
20 words
The method of claim 30 where the desirable modification is determined by applying an automatic algorithm to the digital image.
Claim 34
Dependent Claim
25 words
The method of claim 1 where each residual image in the set of residual images corresponds to a different subset of the extended color gamut.
Claim 35
Dependent Claim
38 words
The method of claim 33 where the intermediate color gamut digital images are determined by using a set of tonescale functions to reduce the extended color gamut dynamic range to a set of intermediate color gamut dynamic ranges.
Claim 36
Dependent Claim
29 words
The method of claim 1 where each residual image in the set of residual images corresponds to a subset of image pixels in the extended color gamut digital image.
Claim 37
Dependent Claim
40 words
The method of claim 1 where the set of residual images is determined from the extended color gamut digital image represented in an extended storage color space and the limited color gamut digital image represented in the storage color space.
Claim 38
Independent Claim
174 words
A method for representing and manipulating a digital image with an extended color gamut using a storage color space having a limited color gamut comprising: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) determining differences between the extended color gamut digital image and the limited color gamut digital image forming a set of residual images; d) storing the set of residual images with the limited color gamut digital image in the storage color space such that the associated set of residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image; e) specifying a desirable modification to the image; and f) using the set of residual images together with the limited color gamut digital image and the specified desirable modification to the image to produce a modified digital image.
Claim 39
Independent Claim
174 words
A method for representing and manipulating a digital image with an extended color gamut using a storage color space having a limited color gamut comprising: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) determining differences between the extended color gamut digital image and the limited color gamut digital image forming a set of residual images; d) storing the set of residual images with the limited color gamut digital image in the storage color space such that the associated set of residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image; e) specifying a desirable modification to the image; and f) using the set of residual images together with the limited color gamut digital image and the specified desirable modification to the image to produce a modified digital image.
Claim 40
Independent Claim
155 words
A method for representing a digital image having color values with an extended color gamut in a storage color space having a limited color gamut comprising: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) compressing the limited color gamut digital image; d) determining a difference between the extended color gamut digital image and an uncompressed limited color gamut digital image computed from the compressed limited color gamut digital image forming a set of residual images; and e) storing the set of residual images with the limited color gamut digital image in the storage color space such that the associated residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
Claim 41
Independent Claim
155 words
A method for representing a digital image having color values with an extended color gamut in a storage color space having a limited color gamut comprising: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) compressing the limited color gamut digital image; d) determining a difference between the extended color gamut digital image and an uncompressed limited color gamut digital image computed from the compressed limited color gamut digital image forming a set of residual images; and e) storing the set of residual images with the limited color gamut digital image in the storage color space such that the associated residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
Claim 42
Dependent Claim
147 words
A computer program product for representing a digital image with an extended color gamut in a storage color space having a limited color gamut, and having a computer readable storage medium with a computer program stored thereon for performing: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) determining differences between the extended color gamut digital image and the limited color gamut digital image forming a set of residual images; and d) storing the residual images with the limited color gamut digital image in the storage color space such that the associated residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
Claim 43
Dependent Claim
147 words
A computer program product for representing a digital image with an extended color gamut in a storage color space having a limited color gamut, and having a computer readable storage medium with a computer program stored thereon for performing: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) determining differences between the extended color gamut digital image and the limited color gamut digital image forming a set of residual images; and d) storing the residual images with the limited color gamut digital image in the storage color space such that the associated residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
Claim 44
Dependent Claim
188 words
A computer program product for representing a digital image with an extended color gamut in a storage color space having a limited color gamut, and having a computer readable storage medium with a computer program stored thereon for performing: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) determining differences between the extended color gamut digital image and the limited color gamut digital image forming a set of residual images; d) storing the set of residual images with the limited color gamut digital image in the storage color space such that the associated set of residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image; e) specifying a desirable modification to the image; and f) using the set of residual images together with the limited color gamut digital image and the specified desirable modification to the image to produce a modified digital image.
Claim 45
Dependent Claim
188 words
A computer program product for representing a digital image with an extended color gamut in a storage color space having a limited color gamut, and having a computer readable storage medium with a computer program stored thereon for performing: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) determining differences between the extended color gamut digital image and the limited color gamut digital image forming a set of residual images; d) storing the set of residual images with the limited color gamut digital image in the storage color space such that the associated set of residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image; e) specifying a desirable modification to the image; and f) using the set of residual images together with the limited color gamut digital image and the specified desirable modification to the image to produce a modified digital image.
Claim 46
Dependent Claim
165 words
A computer program product for representing a digital image with an extended color gamut in a storage color space having a limited color gamut, and having a computer readable storage medium with a computer program stored thereon for performing: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) compressing the limited color gamut digital image; d) determining differences between the extended color gamut digital image and an uncompressed limited color gamut digital image computed from the compressed limited color gamut digital image forming a set of residual images; and e) storing the residual images with the limited color gamut digital image in the storage color space such that the associated residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
Claim 47
Dependent Claim
165 words
A computer program product for representing a digital image with an extended color gamut in a storage color space having a limited color gamut, and having a computer readable storage medium with a computer program stored thereon for performing: a) adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; b) representing the limited color gamut digital image in the storage color space; c) compressing the limited color gamut digital image; d) determining differences between the extended color gamut digital image and an uncompressed limited color gamut digital image computed from the compressed limited color gamut digital image forming a set of residual images; and e) storing the residual images with the limited color gamut digital image in the storage color space such that the associated residual images and the limited color gamut digital image is adapted to be used to form a reconstructed extended color gamut digital image.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-08-27 | 2005-02-26 | 2005-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-27 | 2009-02-26 | 2009-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-27 | 2013-02-26 | 2013-08-28 | $7700.00 | Window Closed / Lapsed |