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US8213733B2
Active / In Force
US
⏱️ 1.7 years remaining
Image processing apparatus, image processing method, computer program and storage medium
Assignee: Canon Inc
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Filing: 2008-07-16
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Granted: 2012-07-03
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Expires: 2028-07-16
Abstract
Abstract An image processing method is a method for correcting both an image quality of an overall image and an image quality of a partial image with excellent balance.
Inventors
- 👤 Minako Kato
- 👤 Kiyoshi Umeda
- 👤 Ryosuke Iguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:01
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6077; H04N1/608; G; G06; G06T; G06T5/00; G06T5/40; G06T5/90; G06T2207/00; G06T2207/10; G06T2207/10024
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
206 words
An image processing apparatus comprising: an extracting means for extracting a partial image corresponding to an object from an entered image; first calculating means for calculating a plurality of types of correction parameters with regard to respective ones of a plurality of types of correction processes to be executed based on image information of the partial image; first generating means for generating first conversion parameters reflecting respective ones of the plurality of types of correction parameters calculated by said first calculating means; second calculating means for calculating, using a calculation method different from a calculation method of said first calculating means, a plurality of types of correction parameters with regard to respective ones of a plurality of types of correction processes to be executed based on image information of the entered image; a second generating means for generating second conversion parameters having a format common with that of the first conversion parameters, the second correction parameters reflecting respective ones of the plurality of types of correction parameters calculated by said second calculating means; and image correction parameter generating means for adding the first conversion parameters and the second conversion parameters in accordance with a predetermined ratio, thereby generating image correction parameters for correcting the entered image.
Claim 2
Dependent Claim
206 words
An image processing apparatus comprising: an extracting means for extracting a partial image corresponding to an object from an entered image; first calculating means for calculating a plurality of types of correction parameters with regard to respective ones of a plurality of types of correction processes to be executed based on image information of the partial image; first generating means for generating first conversion parameters reflecting respective ones of the plurality of types of correction parameters calculated by said first calculating means; second calculating means for calculating, using a calculation method different from a calculation method of said first calculating means, a plurality of types of correction parameters with regard to respective ones of a plurality of types of correction processes to be executed based on image information of the entered image; a second generating means for generating second conversion parameters having a format common with that of the first conversion parameters, the second correction parameters reflecting respective ones of the plurality of types of correction parameters calculated by said second calculating means; and image correction parameter generating means for adding the first conversion parameters and the second conversion parameters in accordance with a predetermined ratio, thereby generating image correction parameters for correcting the entered image.
Claim 3
Dependent Claim
42 words
The apparatus according to claim 1 , wherein the plurality of types of correction parameters calculated by said first calculating means and said second calculating means are parameters to be used for correcting at least one of color cast, luminance, and saturation.
Claim 4
Dependent Claim
98 words
The apparatus according to claim 2 , wherein said first calculating means: calculates correction parameters for performing the correction of luminance based upon result of calculating correction parameters for performing the correction of color cast and a luminance target value predetermined with regard to the partial image; and calculates correction parameters for performing the correction of saturation based upon the result of calculating correction parameters for performing the correction of color cast, result of calculating the correction parameters for performing the correction of luminance and target values of color difference components predetermined with regard to the partial image.
Claim 5
Dependent Claim
59 words
The apparatus according to claim 2 , wherein the correction parameters for performing the correction of color cast, correction parameters for performing the correction of luminance and correction parameters for performing the correction of saturation are any of data in a 3×3 matrix format, data in a format of a one-dimensional look-up table and data in a coefficient format.
Claim 6
Dependent Claim
64 words
The apparatus according to claim 3 , wherein said first generating means generates the first conversion parameters in the format of a three-dimensional look-up table that reflects a plurality of parameters that are any of the correction parameters for performing the correction of color cast, the correction parameters for performing the correction of luminance and the correction parameters for performing the correction of saturation.
Claim 7
Dependent Claim
64 words
The apparatus according to claim 2 , wherein said second generating means generates the second conversion parameters in the format of a three-dimensional look-up table that reflects a plurality of parameters that are any of the correction parameters for performing the correction of color cast, the correction parameters for performing the correction of luminance and the correction parameters for performing the correction of saturation.
Claim 8
Dependent Claim
47 words
The apparatus according to claim 1 , wherein said second calculating unit means calculates, from the entered image, each of correction parameters for performing a correction of color cast, correction parameters for performing a correction of luminance and correction parameters for performing a correction of saturation independently.
Claim 9
Dependent Claim
210 words
An image processing method comprising: an extracting step of extracting a partial image corresponding to an object from an entered image; a first calculating step of a plurality of types of calculating correction parameters with regard to respective ones of a plurality of types of correction processes to be executed based on image information of the partial image; a first generating step of generating first conversion parameters reflecting respective ones of the plurality of types of correction parameters calculated at said first calculating step; a second calculating step of calculating, using a calculation method different from a calculation method of said first calculating step, a plurality of types of correction parameters with regard to respective ones of a plurality of types of correction processes to be executed based on image information of the entered image; a second generating step of generating second conversion parameters having a format common with that of the first conversion parameters, the second correction parameters reflecting respective ones of the plurality of types of correction parameters calculated at said second calculating step; and an image correction parameter generating step of adding the first conversion parameters and the second conversion parameters in accordance with a predetermined ratio, thereby generating image correction parameters for correcting the entered image.
Claim 10
Dependent Claim
210 words
An image processing method comprising: an extracting step of extracting a partial image corresponding to an object from an entered image; a first calculating step of a plurality of types of calculating correction parameters with regard to respective ones of a plurality of types of correction processes to be executed based on image information of the partial image; a first generating step of generating first conversion parameters reflecting respective ones of the plurality of types of correction parameters calculated at said first calculating step; a second calculating step of calculating, using a calculation method different from a calculation method of said first calculating step, a plurality of types of correction parameters with regard to respective ones of a plurality of types of correction processes to be executed based on image information of the entered image; a second generating step of generating second conversion parameters having a format common with that of the first conversion parameters, the second correction parameters reflecting respective ones of the plurality of types of correction parameters calculated at said second calculating step; and an image correction parameter generating step of adding the first conversion parameters and the second conversion parameters in accordance with a predetermined ratio, thereby generating image correction parameters for correcting the entered image.
Claim 11
Dependent Claim
42 words
The method according to claim 8 , wherein the plurality of types of correction parameters calculated in said first calculating step and said second calculating step are parameters to be used for correcting at least one of color cast, luminance and saturation.
Claim 12
Dependent Claim
99 words
The method according to claim 9 , wherein said first calculating step includes: calculating correction parameters for performing the correction of luminance based upon result of calculating correction parameters for performing the correction of color cast and a luminance target value predetermined with regard to the partial image; and calculating correction parameters for performing the correction of saturation based upon the result of calculating correction parameters for performing the correction of color cast, result of calculating the correction parameters for performing the correction of luminance and target values of color difference components predetermined with regard to the partial image.
Claim 13
Dependent Claim
59 words
The method according to claim 9 , wherein the correction parameters for performing the correction of color cast, correction parameters for performing the correction of luminance and correction parameters for performing the correction of saturation are any of data in a 3×3 matrix format, data in a format of a one-dimensional look-up table and data in a coefficient format.
Claim 14
Dependent Claim
65 words
The method according to claim 10 , wherein said first generating step includes generating the first conversion parameters in the format of a three-dimensional look-up table that reflects a plurality of parameters that are any of the correction parameters for performing the correction of color cast, the correction parameters for performing the correction of luminance and the correction parameters for performing the correction of saturation.
Claim 15
Dependent Claim
65 words
The method according to claim 9 , wherein said second generating step includes generating the second conversion parameters in the format of a three-dimensional look-up table that reflects a plurality of parameters that are any of the correction parameters for performing the correction of color cast, the correction parameters for performing the correction of luminance and the correction parameters for performing the correction of saturation.
Claim 16
Dependent Claim
47 words
The method according to claim 8 , wherein said second calculating step includes calculating, from the entered image each of correction parameters for performing a correction of color cast, correction parameters for performing a correction of luminance and correction parameters for performing a correction of saturation independently.
Claim 17
Dependent Claim
25 words
A non-transitory computer-readable storage medium storing a computer program which causes a computer to execute an image processing method set forth in claim 8 .
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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) | 2015-07-03 | 2016-01-02 | 2016-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2019-07-03 | 2020-01-02 | 2020-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2023-07-03 | 2024-01-02 | 2024-07-03 | $7700.00 | Window Closed / Lapsed |