US6694051B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image processing method, image processing apparatus and recording medium
Assignee: Canon Inc
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Filing: 1999-06-23
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Granted: 2004-02-17
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Expires: 2019-06-23
Abstract
Abstract An image processing method, an image processing system and a recording medium capable of reproducing images in colors which are close to those memorized by man including a process to create a histogram of an original image, a process to adequately locate a highlight point on the histogram by comparing peaks of the histogram and setting image processing conditions dependently on a shape of a selected peak.
Inventors
- 👤 Manabu Yamazoe
- 👤 Kentaro Yano
- 👤 Tetsuya Suwa
- 👤 Okinori Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:54
CPC Classifications
G; G06; G06T; G06T5/00; G06T5/90; G06T5/92; G06T5/40; H; H04; H04N; H04N1/00; H04N1/40; H04N1/407; H04N1/4072; H04N1/4074; H04N1/46; H04N1/56; H04N1/60; H04N1/6077
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
123 words
An image processing method having a plurality of highlight point detecting methods, comprising the steps of: selecting a highlight point depending on characteristics of an original image; and setting a color processing condition for the original image depending on the highlight point, wherein the original image includes a plurality of images, and wherein a highlight point detection, said selecting and said setting are executed independently for each of the plurality of images, and wherein a shadow point is detected by a shadow point detecting method which is preliminarily set regardless of the characteristics of the original image by the color processing condition, and wherein said color processing condition is set on the basis of the selected highlight point and the detected shadow point.
Claim 2
Dependent Claim
123 words
An image processing method having a plurality of highlight point detecting methods, comprising the steps of: selecting a highlight point depending on characteristics of an original image; and setting a color processing condition for the original image depending on the highlight point, wherein the original image includes a plurality of images, and wherein a highlight point detection, said selecting and said setting are executed independently for each of the plurality of images, and wherein a shadow point is detected by a shadow point detecting method which is preliminarily set regardless of the characteristics of the original image by the color processing condition, and wherein said color processing condition is set on the basis of the selected highlight point and the detected shadow point.
Claim 3
Dependent Claim
29 words
An image processing method according to claim 1 , wherein said plurality of highlight point detecting methods include a highlight point detecting method for a scene of blue sky.
Claim 4
Dependent Claim
23 words
An image processing method according to claim 1 , further comprising a step of selecting a highlight point according to a user's instruction.
Claim 5
Dependent Claim
94 words
An image processing method comprising the steps of: obtaining a first highlight on the basis of a first histogram on the basis of a luminance signal; obtaining a second highlight on the basis of a second histogram on the basis of a signal indicating brightness including a blue signal to which a heavy weight is imparted; comparing said first highlight with said second highlight; setting a highlight having a smaller value as a highlight point to be used to correct an image; and correcting the image on the basis of said set highlight point.
Claim 6
Dependent Claim
94 words
An image processing method comprising the steps of: obtaining a first highlight on the basis of a first histogram on the basis of a luminance signal; obtaining a second highlight on the basis of a second histogram on the basis of a signal indicating brightness including a blue signal to which a heavy weight is imparted; comparing said first highlight with said second highlight; setting a highlight having a smaller value as a highlight point to be used to correct an image; and correcting the image on the basis of said set highlight point.
Claim 7
Dependent Claim
126 words
An image processing apparatus having a plurality of highlight point detecting methods, comprising: selecting means for selecting a highlight point according to characteristics of an original image; and setting means for setting a color processing condition for said original image according to said highlight point, wherein the original image includes a plurality of images, and wherein a highlight point detection, the selecting and the setting are executed independently for each of the plurality of images, and wherein a shadow point is detected by a shadow point detecting method which is preliminarily set regardless of the characteristics of the original image by the color processing condition, and wherein said color processing condition is set on the basis of the selected highlight point and the detected shadow point.
Claim 8
Dependent Claim
126 words
An image processing apparatus having a plurality of highlight point detecting methods, comprising: selecting means for selecting a highlight point according to characteristics of an original image; and setting means for setting a color processing condition for said original image according to said highlight point, wherein the original image includes a plurality of images, and wherein a highlight point detection, the selecting and the setting are executed independently for each of the plurality of images, and wherein a shadow point is detected by a shadow point detecting method which is preliminarily set regardless of the characteristics of the original image by the color processing condition, and wherein said color processing condition is set on the basis of the selected highlight point and the detected shadow point.
Claim 9
Dependent Claim
130 words
A recording medium in which a program is stored, said program comprising the steps of: preparing a plurality of highlight point detecting methods; detecting a highlight point according to characteristics of an original image; and setting a color processing condition for the original image according to the highlight point, wherein the original image includes a plurality of images, and wherein a highlight point detection, said selecting and said setting are executed independently for each of the plurality of images, and wherein a shadow point is detected by a shadow point detecting method which is preliminarily set regardless of the characteristics of the original image by the color processing condition, and wherein said color processing condition is set on the basis of the selected highlight point and the detected shadow point.
Claim 10
Dependent Claim
130 words
A recording medium in which a program is stored, said program comprising the steps of: preparing a plurality of highlight point detecting methods; detecting a highlight point according to characteristics of an original image; and setting a color processing condition for the original image according to the highlight point, wherein the original image includes a plurality of images, and wherein a highlight point detection, said selecting and said setting are executed independently for each of the plurality of images, and wherein a shadow point is detected by a shadow point detecting method which is preliminarily set regardless of the characteristics of the original image by the color processing condition, and wherein said color processing condition is set on the basis of the selected highlight point and the detected shadow point.
Claim 11
Dependent Claim
29 words
An image processing method according to claim 5 , wherein said plurality of highlight point detecting methods include a highlight point detecting method for a scene of blue sky.
Claim 12
Dependent Claim
23 words
An image processing method according to claim 5 , further comprising a step of selecting a highlight point according to a user's instruction.
Claim 13
Dependent Claim
29 words
An image processing method according to claim 6 , wherein said plurality of highlight point detecting methods include a highlight point detecting method for a scene of blue sky.
Claim 14
Dependent Claim
23 words
An image processing method according to claim 6 , further comprising a step of selecting a highlight point according to a user's instruction.
References Cited (Backward Citations)
US4591904A
Cited
JPS6057594A
Cited
JPS6087594A
Cited
US4903145A
Cited
US4928167A
Cited
US4984071A
Cited
US5467196A
Cited
US5748773A
Cited
US5748802A
Cited
US5426517A
Cited
US5371615A
Cited
JPH0968764A
Cited
US6081343A
Cited
US5828793A
Cited
US6351558B1
Cited
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) | 2007-02-16 | 2007-08-18 | 2008-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-02-16 | 2011-08-18 | 2012-02-17 | $3760.00 | Window Closed / Lapsed |
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