US5381185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for correcting flesh color
Assignee: Hitachi Ltd
•
Filing: 1993-07-20
•
Granted: 1995-01-10
•
Expires: 2013-07-20
Abstract
Abstract In a method for correcting flesh color including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, the R-Y color-difference signal level is detected, and correction of the B-Y color-difference signal by the flesh color correction signal is inhibited, when the detected R-Y color-difference signal level is higher than a predetermined value.
Inventors
- 👤 Hideaki Ohki
- 👤 Masanori Kamiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:35
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/643
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
93 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the R-Y color-difference signal; and controlling the gain of said flesh color correction signal according to the detected amplitude level of the R-Y color-difference signal.
Claim 2
Independent Claim
93 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the R-Y color-difference signal; and controlling the gain of said flesh color correction signal according to the detected amplitude level of the R-Y color-difference signal.
Claim 3
Independent Claim
93 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the B-Y color-difference signal; and controlling the gain of said flesh color correction signal according to the detected amplitude level of the B-Y color-difference signal.
Claim 4
Independent Claim
93 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the B-Y color-difference signal; and controlling the gain of said flesh color correction signal according to the detected amplitude level of the B-Y color-difference signal.
Claim 5
Independent Claim
110 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the R-Y color-difference signal; detecting an amplitude level of the B-Y color-difference signal; adding the values of the detected amplitude levels of R-Y and B-Y color-difference signals; and controlling the gain of said flesh color correction signal according to the added result.
Claim 6
Independent Claim
110 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the R-Y color-difference signal; detecting an amplitude level of the B-Y color-difference signal; adding the values of the detected amplitude levels of R-Y and B-Y color-difference signals; and controlling the gain of said flesh color correction signal according to the added result.
Claim 7
Independent Claim
100 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the R-Y color-difference signal; and inhibiting correction of the B-Y color-difference signal by said flesh color correction signal when the detected amplitude level of the R-Y color-difference signal exceeds a predetermined value.
Claim 8
Independent Claim
100 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the R-Y color-difference signal; and inhibiting correction of the B-Y color-difference signal by said flesh color correction signal when the detected amplitude level of the R-Y color-difference signal exceeds a predetermined value.
Claim 9
Independent Claim
100 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the B-Y color-difference signal; and inhibiting correction of the B-Y color-difference signal by said flesh color correction signal when the detected amplitude level of the B-Y color-difference signal exceeds a predetermined value.
Claim 10
Independent Claim
100 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the B-Y color-difference signal; and inhibiting correction of the B-Y color-difference signal by said flesh color correction signal when the detected amplitude level of the B-Y color-difference signal exceeds a predetermined value.
Claim 11
Independent Claim
113 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the R-Y color-difference signal; detecting an amplitude level of the B-Y color-difference signal; adding values of the detected R-Y and B-Y color-difference signals; and inhibiting correction of the B-Y color-difference signal by said flesh color correction signal when the added result exceeds a predetermined value.
Claim 12
Independent Claim
113 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the B-Y color-difference signal by the generated flesh color correction signal, said method comprising the steps of: detecting an amplitude level of the R-Y color-difference signal; detecting an amplitude level of the B-Y color-difference signal; adding values of the detected R-Y and B-Y color-difference signals; and inhibiting correction of the B-Y color-difference signal by said flesh color correction signal when the added result exceeds a predetermined value.
Claim 13
Independent Claim
98 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color signal from three primary color (R, G, B) signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the color signal by the generated flesh color correction signal, said method comprising the steps of: detecting amplitude levels of at least one of the R and B color signals of said primary color signals; and controlling the gain of said flesh color correction signal according to the detected amplitude levels.
Claim 14
Independent Claim
98 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color signal from three primary color (R, G, B) signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the color signal by the generated flesh color correction signal, said method comprising the steps of: detecting amplitude levels of at least one of the R and B color signals of said primary color signals; and controlling the gain of said flesh color correction signal according to the detected amplitude levels.
Claim 15
Independent Claim
102 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color signal from the three primary color signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the color signal by the generated flesh color correction signal, said method comprising the steps of: detecting amplitude levels of at least one of the R and B color signals of said primary color signals; and inhibiting correction of the color signal by said flesh color correction signal when the detected amplitude levels exceed a predetermined value.
Claim 16
Independent Claim
102 words
A method for correcting flesh color, including the steps of generating an I-axis component and Q-axis component of a color signal from the three primary color signals; generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; and correcting the color signal by the generated flesh color correction signal, said method comprising the steps of: detecting amplitude levels of at least one of the R and B color signals of said primary color signals; and inhibiting correction of the color signal by said flesh color correction signal when the detected amplitude levels exceed a predetermined value.
Claim 17
Independent Claim
94 words
An apparatus for correcting flesh color, comprising: a correction signal generator for generating an I-axis component and a Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals and generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; a gain controller for controlling the level of the generated flesh color correction signal; and a detector for detecting an amplitude level of the R-Y color-difference signal; wherein said gain controller controls the flesh color correction signal level in response to the output of said detector.
Claim 18
Independent Claim
94 words
An apparatus for correcting flesh color, comprising: a correction signal generator for generating an I-axis component and a Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals and generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; a gain controller for controlling the level of the generated flesh color correction signal; and a detector for detecting an amplitude level of the R-Y color-difference signal; wherein said gain controller controls the flesh color correction signal level in response to the output of said detector.
Claim 19
Independent Claim
94 words
An apparatus for correcting flesh color, comprising: a correction signal generator for generating an I-axis component and a Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals and generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; a gain controller for controlling the level of the generated flesh color correction signal; and a detector for detecting an amplitude level of the B-Y color-difference signal; wherein said gain controller controls the flesh color correction signal level in response to the output of said detector.
Claim 20
Independent Claim
94 words
An apparatus for correcting flesh color, comprising: a correction signal generator for generating an I-axis component and a Q-axis component of a color-difference signal from R-Y, G-Y, and B-Y color-difference signals and generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; a gain controller for controlling the level of the generated flesh color correction signal; and a detector for detecting an amplitude level of the B-Y color-difference signal; wherein said gain controller controls the flesh color correction signal level in response to the output of said detector.
Claim 21
Independent Claim
104 words
An apparatus for correcting flesh color, comprising: a correction signal generator for generating an I-axis component and Q-axis component of a color signal from three primary color (R, G, B) signals and generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; a gain controller for controlling the level of the generated flesh color correction signal; and a detector for detecting amplitude levels of at least one of the R and B color signals of said primary color signals; wherein said gain controller controls the flesh color correction signal level in response to the output of said detector.
Claim 22
Independent Claim
104 words
An apparatus for correcting flesh color, comprising: a correction signal generator for generating an I-axis component and Q-axis component of a color signal from three primary color (R, G, B) signals and generating a flesh color correction signal on the basis of the generated I-axis and Q-axis components; a gain controller for controlling the level of the generated flesh color correction signal; and a detector for detecting amplitude levels of at least one of the R and B color signals of said primary color signals; wherein said gain controller controls the flesh color correction signal level in response to the output of said detector.
References Cited (Backward Citations)
US3740459A
Cited
US3749825A
Cited
US3950779A
Cited
US4051510A
Cited
US4219840A
Cited
US4327374A
Cited
JPS6242691A
Cited
US4754321A
Cited
US5134465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-01-09 | 1998-07-11 | 1999-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-09 | 2002-07-11 | 2003-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-09 | 2006-07-11 | 2007-01-10 | $7700.00 | Window Closed / Lapsed |