US5321529A
Expired / Lapsed
US
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Color image processing with smoothing of differential components and addition of the result to a specific color component
Assignee: Canon Inc
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Filing: 1991-05-15
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Granted: 1994-06-14
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Expires: 2011-05-15
Abstract
Abstract A color image processing apparatus includes an input unit for inputting a plurality of color component signals representing a color image, a first operation unit for obtaining differences between a specified color component signal among the plurality of color component signals and other color component signals and outputting the differential signals, a second operation unit for smoothing-processing the differential signals obtained by the first operation unit, and a third operation unit for adding the differential signals smoothing processed by the second operation unit and the specified color component signal and outputting the result as the other-color component signals.
Inventors
- 👤 Masahiro Funada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:39
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/58
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
112 words
A color image processing apparatus comprising: input means for inputting pixel by pixel a plurality of color component signals representing a color image; first operation means for obtaining a difference between a specified color component signal among said pluarlity of color component signals and another color component signal and outputting a differential signal; second operation means for performing smooth processing on the differential signal obtained by said first operation means by using differential signals of a plurality of pixels; and third operation means for adding the smoothed differential signal processed by said second operation means to said specified color component signal and outputting an added result as said another color component signal.
Claim 2
Dependent Claim
112 words
A color image processing apparatus comprising: input means for inputting pixel by pixel a plurality of color component signals representing a color image; first operation means for obtaining a difference between a specified color component signal among said pluarlity of color component signals and another color component signal and outputting a differential signal; second operation means for performing smooth processing on the differential signal obtained by said first operation means by using differential signals of a plurality of pixels; and third operation means for adding the smoothed differential signal processed by said second operation means to said specified color component signal and outputting an added result as said another color component signal.
Claim 3
Dependent Claim
25 words
A color image processing apparatus according to claim 1, wherein said second operation means performs the smoothing processing two-dimensionally by using a plurality of pixels.
Claim 4
Dependent Claim
29 words
A color image processing apparatus according to claim 1, wherein said input means comprises a plurality of line sensors having mutually different color filters for reading a color image.
Claim 5
Dependent Claim
23 words
A color image processing apparatus according to claim 1, wherein said plurality of color component signals are red, green and blue component signals.
Claim 6
Dependent Claim
20 words
A color image processing apparatus according to claim 4 wherein said specified color component signal is a green component signal.
Claim 7
Dependent Claim
84 words
A color image processing apparatus comprising: input means for inputting pixel by pixel a plurality of color component signals representing a color image; first correction means for correcting for color aberration caused by magnification processing of an image represented by said plurality of color component signals; and second correction means for correcting for color aberration caused by the mechanical vibration or differences between signal characteristics of colors in said plurality of color component signals by using color component signals of a plurality of pixels.
Claim 8
Dependent Claim
84 words
A color image processing apparatus comprising: input means for inputting pixel by pixel a plurality of color component signals representing a color image; first correction means for correcting for color aberration caused by magnification processing of an image represented by said plurality of color component signals; and second correction means for correcting for color aberration caused by the mechanical vibration or differences between signal characteristics of colors in said plurality of color component signals by using color component signals of a plurality of pixels.
Claim 9
Dependent Claim
40 words
A color image processing apparatus according to claim 6, wherein said second correction means perform the correction operation in accordance with the differences between a specified color signal among said plurality of color component signals and other color component signals.
Claim 10
Dependent Claim
29 words
A color image processing apparatus according to claim 6, wherein said input means comprises a plurality of line sensors having mutually different color filters for reading a color image.
Claim 11
Dependent Claim
23 words
A color image processing apparatus according to claim 6, wherein said plurality of color component signals are red, green and blue component signals.
Claim 12
Dependent Claim
115 words
A color image processing method comprising the steps of: inputting pixel by pixel a plurality of color component signals representing a color image; a first operation step, of obtaining a difference between a specified color component signal among the plurality of color component signals and another color component signal and outputting a differential signal; a second operation step, of performing smoothing processing on the differential signal obtained in said first operation step by using differential signals of a plurality of pixels; and a third operation step, of adding the smoothed differential signals processed in said second operation step to the specified color component signal and outputting an added result as the another color component signal.
Claim 13
Dependent Claim
115 words
A color image processing method comprising the steps of: inputting pixel by pixel a plurality of color component signals representing a color image; a first operation step, of obtaining a difference between a specified color component signal among the plurality of color component signals and another color component signal and outputting a differential signal; a second operation step, of performing smoothing processing on the differential signal obtained in said first operation step by using differential signals of a plurality of pixels; and a third operation step, of adding the smoothed differential signals processed in said second operation step to the specified color component signal and outputting an added result as the another color component signal.
Claim 14
Dependent Claim
27 words
A color image processing method according to claim 10, wherein, in said second operation step, the smoothing processing is performed two-dimensionally by using a plurality of pixels.
Claim 15
Dependent Claim
32 words
A color image processing method according to claim 10, wherein said inputting step is performed by using a plurality of line sensors having mutually different color filters for reading a color image.
Claim 16
Dependent Claim
23 words
A color image processing method according to claim 10, wherein the pluraltiy of color component signals are red, green and blue component signals.
Claim 17
Dependent Claim
20 words
A color image processing method according to claim 13, wherein the specified color component signal is a green component signal.
Claim 18
Dependent Claim
86 words
A color image processing method comprising the steps of: inputting pixel by pixel a plurality of color component signals representing a color image; a first correction step, of correcting for color aberration caused by magnification processing of an image represented by the plurality of color component signals; and a second correction step, of correcting for color aberration caused by the mechanical vibration or differences between signal characteristics of colors in the plurality of color component signals by using color component signals of a plurality of pixels.
Claim 19
Dependent Claim
86 words
A color image processing method comprising the steps of: inputting pixel by pixel a plurality of color component signals representing a color image; a first correction step, of correcting for color aberration caused by magnification processing of an image represented by the plurality of color component signals; and a second correction step, of correcting for color aberration caused by the mechanical vibration or differences between signal characteristics of colors in the plurality of color component signals by using color component signals of a plurality of pixels.
Claim 20
Dependent Claim
42 words
A color image processing method according to claim 15, wherein, in said second correction step, the correction opertion is performed in accordance with the differences between a specified color signal among the plurality of color component signals and another color component signal.
Claim 21
Dependent Claim
32 words
A color image processing method according to claim 15, wherein said inputting step is performed by using a plurality of line sensors having mutually different color filters for reading a color image.
Claim 22
Dependent Claim
23 words
A color image processing method according to claim 15, wherein the plurality of color component signals are red, green and blue component signals.
Claim 23
Dependent Claim
105 words
A color image processing apparatus comprising: input means for inputting pixel by pixel a plurality of color component signals representing a color image; first correction means for correcting for color aberration caused by magnification processing of an image represented by said plurality of color component signals, including delay means for delaying at least one of the plurality of color component signals relative to another color component signal; and second correction means for correcting for color aberrtion caused by the mechanical vibration or differences between signal characteristics of colors in said plurality of color component signals by using color component signals of a plurality of pixels.
Claim 24
Dependent Claim
105 words
A color image processing apparatus comprising: input means for inputting pixel by pixel a plurality of color component signals representing a color image; first correction means for correcting for color aberration caused by magnification processing of an image represented by said plurality of color component signals, including delay means for delaying at least one of the plurality of color component signals relative to another color component signal; and second correction means for correcting for color aberrtion caused by the mechanical vibration or differences between signal characteristics of colors in said plurality of color component signals by using color component signals of a plurality of pixels.
Claim 25
Dependent Claim
94 words
A color image processing method comprising the steps of: inputting pixel by pixel a plurality of color component signals representing a color image; a first correction step, of correcting for color aberration caused by magnification processing of an image represented by said plurality of color component signals, with at least one of the plurality of color component signals being delayed relative to another color component signal; and a second correction step, of correcting for color aberrtion caused by the mechanical vibration or differences between signal characteristics of colors in said plurality of of pixels.
Claim 26
Dependent Claim
94 words
A color image processing method comprising the steps of: inputting pixel by pixel a plurality of color component signals representing a color image; a first correction step, of correcting for color aberration caused by magnification processing of an image represented by said plurality of color component signals, with at least one of the plurality of color component signals being delayed relative to another color component signal; and a second correction step, of correcting for color aberrtion caused by the mechanical vibration or differences between signal characteristics of colors in said plurality of of pixels.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |