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US7365876B2
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Method for generating a color match between a target object and a source object
Assignee: CGS Publishing Technologies International GmbH
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Filing: 2003-06-27
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Granted: 2008-04-29
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Expires: 2023-06-27
Abstract
Abstract In a method for generating a color match between a target object having a plurality of different target color values and a source object, a target color space with target color locations to be correlated with target color values is generated for the target object. For the source object, a source color space having a plurality of source color locations is generated, wherein the source color locations are correlated with a source color value, respectively. For each target color location a position in the vicinity of a similar source color location is determined within the source color space. The spacing of this position from the similar source color location is determined, and, based on the spacing, the source color value correlated with the similar source color location is changed.
Inventors
- 👤 Michael Weidner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:32
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/603; H04N1/6052; H04N1/6055
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
A method for generating a color match between a target object having a plurality of different target color values and a source object, the method comprising the steps of: a) generating for the target object a target color space with target color locations to be correlated with target color values; b) generating for the source object a source color space having a plurality of source color locations, wherein the source color locations are correlated with a source color value, respectively; c) determining for each target color location within the source color space a position in the vicinity of a similar source color location; d) determining the spacing of the position of the target color location from the similar source color location; and e) based on the spacing, changing the source color value correlated with the similar source color location; further comprising the step of repeating the steps b) through e) until either a predetermined number of repetitions has been reached or the spacing drops below a predetermined error value.
Claim 2
Independent Claim
169 words
A method for generating a color match between a target object having a plurality of different target color values and a source object, the method comprising the steps of: a) generating for the target object a target color space with target color locations to be correlated with target color values; b) generating for the source object a source color space having a plurality of source color locations, wherein the source color locations are correlated with a source color value, respectively; c) determining for each target color location within the source color space a position in the vicinity of a similar source color location; d) determining the spacing of the position of the target color location from the similar source color location; and e) based on the spacing, changing the source color value correlated with the similar source color location; further comprising the step of repeating the steps b) through e) until either a predetermined number of repetitions has been reached or the spacing drops below a predetermined error value.
Claim 3
Dependent Claim
35 words
The method according to claim 1 , wherein the target color locations and the source color locations are determined based on the target color values and the source color values by a spectroscopic method, respectively.
Claim 4
Dependent Claim
38 words
The method according to claim 1 , wherein, beginning with a first repetition of the steps b) through e), the source color locations of the source color spaces determined in the preceding repetition or preceding repetitions are used.
Claim 5
Dependent Claim
18 words
The method according to claim 3 , wherein the source color spaces of all preceding repetitions are used.
Claim 6
Dependent Claim
44 words
The method according to claim 1 , wherein several of the source color locations are determined for the target color location, wherein the source color locations envelopes the target color location, wherein one of the source color locations is the similar source color location.
Claim 7
Dependent Claim
45 words
The method according to claim 5 , wherein from the source color locations enveloping the target color location a linear combination with linear factors is formed and the linear factors are used for changing the source color value corresponding to the similar source color location.
Claim 8
Dependent Claim
27 words
The method according to claim 1 , further comprising the step of determining a black content when generating the target color space and the source color space.
Claim 9
Dependent Claim
35 words
The method according to claim 7 further comprising the step of representing the color values as a four-dimensional field and the color space as a three-dimensional field, respectively, when the black content is not considered.
Claim 10
Dependent Claim
34 words
The method according to claim 7 further comprising the step of representing the color values as a four-dimensional field and the color space as a four-dimensional field, respectively, when the black content is considered.
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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) | 2011-04-29 | 2011-10-29 | 2012-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2015-04-29 | 2015-10-29 | 2016-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2019-04-29 | 2019-10-29 | 2020-04-29 | $7700.00 | Window Closed / Lapsed |