Patent US6753987B1 successfully refreshed from Google Patents.
US6753987B1
Expired / Lapsed
US
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Systems and methods to determine a contrast and a brightness adjusted system tone reproduction curve
Assignee: Xerox Corp
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Filing: 2000-02-25
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Granted: 2004-06-22
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Expires: 2020-02-25
Abstract
Abstract Contrast and brightness adjustments can be made to a system tone reproduction curve. These contrast and brightness adjustments can be made, for example, by user, via a user input device, or alternatively, automatically detected, based on an image analysis routine. By determining one or more generic tone reproduction curves, and interpolating these tone reproduction curves with the system tone reproduction curve, a new, adjusted tone reproduction curve is produced. This allows for a determination of the adjusted system tone reproduction curve as opposed to calculating and restoring the families of system tone reproduction curves adjusted for all the possible combinations of contrast and brightness.
Inventors
- 👤 Charles E. Farnung
- 👤 Ramesh Nagarajan
- 👤 Francis Tse
- 👤 Julie A. Fisher
- 👤 Regina M. Loverde
- 👤 Ralph H. Huedepohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:18
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
86 words
A system that determines a contrast and a brightness adjusted tone reproduction curve comprising: an input device that receives at least one of contrast and brightness information; at least one tone reproduction curve determination device that determines at least one of a contrast tone reproduction curve and a brightness tone reproduction curve; and a tone reproduction curve adjusting device that adjusts a tone reproduction curve based on the at least one determined contrast and brightness tone reproduction curves and determines an image processing tone reproduction curve.
Claim 2
Independent Claim
86 words
A system that determines a contrast and a brightness adjusted tone reproduction curve comprising: an input device that receives at least one of contrast and brightness information; at least one tone reproduction curve determination device that determines at least one of a contrast tone reproduction curve and a brightness tone reproduction curve; and a tone reproduction curve adjusting device that adjusts a tone reproduction curve based on the at least one determined contrast and brightness tone reproduction curves and determines an image processing tone reproduction curve.
Claim 3
Dependent Claim
25 words
The system of claim 1 , further comprising a coordinate determination device that aligns the adjusted tone reproduction curve and a system tone reproduction curve.
Claim 4
Dependent Claim
24 words
The system of claim 1 , further comprising a cascading device that cascades the adjusted tone reproduction curve with a system tone reproduction curve.
Claim 5
Dependent Claim
21 words
The system of claim 1 , further comprising a tone reproduction curve smoothing device that smoothes the adjusted tone reproduction curve.
Claim 6
Dependent Claim
33 words
The system of claim 1 , further comprising an image processing device that determines an image processing tone reproduction curve based on the adjusted tone reproduction curve and an output tone reproduction curve.
Claim 7
Dependent Claim
22 words
The system of claim 5 , wherein the image processing device manipulates an image based on the image processing tone reproduction curve.
Claim 8
Independent Claim
66 words
A method for determining a contrast and a brightness adjusted tone reproduction curve comprising: receiving at least one of contrast and brightness information; determining at least one of a contrast tone reproduction curve and a brightness tone reproduction curve; and adjusting a tone reproduction curve based on the at least one determined contrast and brightness tone reproduction curves and determining an image processing tone reproduction curve.
Claim 9
Independent Claim
66 words
A method for determining a contrast and a brightness adjusted tone reproduction curve comprising: receiving at least one of contrast and brightness information; determining at least one of a contrast tone reproduction curve and a brightness tone reproduction curve; and adjusting a tone reproduction curve based on the at least one determined contrast and brightness tone reproduction curves and determining an image processing tone reproduction curve.
Claim 10
Dependent Claim
20 words
The method of claim 7 , further comprising aligning the adjusted tone reproduction curve and a system tone reproduction curve.
Claim 11
Dependent Claim
20 words
The method of claim 7 , further comprising cascading the adjusted tone reproduction curve with a system tone reproduction curve.
Claim 12
Dependent Claim
14 words
The method of claim 7 , further comprising smoothing the adjusted tone reproduction curve.
Claim 13
Dependent Claim
28 words
The method of claim 7 , further comprising determining an image processing tone reproduction curve based on the adjusted tone reproduction curve and an output tone reproduction curve.
Claim 14
Dependent Claim
22 words
The method of claim 11 , wherein the image processing device manipulates an image based on the image processing tone reproduction curve.
Claim 15
Dependent Claim
76 words
An information storage medium comprising information that determines a contrast and a brightness adjusted tone reproduction curve comprising: information that receives at least one of contrast and brightness information; information that determines at least one of a contrast tone reproduction curve and a brightness tone reproduction curve; and information that adjusts a tone reproduction curve based on the at least one determined contrast and brightness tone reproduction curves and determines an image processing tone reproduction curve.
Claim 16
Dependent Claim
76 words
An information storage medium comprising information that determines a contrast and a brightness adjusted tone reproduction curve comprising: information that receives at least one of contrast and brightness information; information that determines at least one of a contrast tone reproduction curve and a brightness tone reproduction curve; and information that adjusts a tone reproduction curve based on the at least one determined contrast and brightness tone reproduction curves and determines an image processing tone reproduction curve.
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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) | 2007-06-22 | 2007-12-22 | 2008-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-06-22 | 2011-12-22 | 2012-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-06-22 | 2015-12-22 | 2016-06-22 | $7700.00 | Window Closed / Lapsed |