US5973801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for matching colors of an object to printing colors
Assignee: Kodak IL Ltd
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Filing: 1996-07-10
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Granted: 1999-10-26
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Expires: 2016-07-10
Abstract
Abstract A method for automatically matching the color of a printed representation of an object or swatch to that of the object or swatch itself is provided. The method includes the steps of measuring the colors of the object with a calorimeter. An object image, showing mainly the object, is produced and a representative image color is determined. From the colors of the object (as measured by a colorimeter or some other color measuring device), a representative object color is determined. Finally, the colors of the object image in the vicinity, in color space, of the representative image color are corrected to colors in the vicinity, also in color space, of the representative object color.
Inventors
- 👤 Yoav Bresler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:23
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/62
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
267 words
A method for determining the colors with which to print an image of an object such that printed output colors approximately match colors of the object, the method comprising the steps of: measuring colors of said object; determining a representative image color of an object image showing mainly said object having colors, some of said colors being in vicinity, in color space, of a representative object color; measuring a representative sample of a color gamut of a printing press on which said image is to be printed, thereby to provide a color conversion book converting from ink values to colorimeter values; determining a representative object color of said colors of said object, the stop of determining comprising the steps of: providing the colors of said object in luminance, hue and saturation color space; generating representative luminance, hue and saturation values over said colors of said object; the step of generating comprising the steps of: generating a histogram of saturation weighted hue from hue and saturation values of said colors of said object; selecting a hue value having the highest saturation level as a representative hue; generating a saturation level close to the saturation level at which said representative hue was found; and generating a luminance level associated with said representative hue; utilizing said color book to convert said representative luminance, hue and saturation values to representative inking values forming said representative object color; and correcting the colors of said object image which are in the vicinity, in color space, of said representative image color, to colors in the vicinity, in color space, of said representative object color.
Claim 2
Independent Claim
267 words
A method for determining the colors with which to print an image of an object such that printed output colors approximately match colors of the object, the method comprising the steps of: measuring colors of said object; determining a representative image color of an object image showing mainly said object having colors, some of said colors being in vicinity, in color space, of a representative object color; measuring a representative sample of a color gamut of a printing press on which said image is to be printed, thereby to provide a color conversion book converting from ink values to colorimeter values; determining a representative object color of said colors of said object, the stop of determining comprising the steps of: providing the colors of said object in luminance, hue and saturation color space; generating representative luminance, hue and saturation values over said colors of said object; the step of generating comprising the steps of: generating a histogram of saturation weighted hue from hue and saturation values of said colors of said object; selecting a hue value having the highest saturation level as a representative hue; generating a saturation level close to the saturation level at which said representative hue was found; and generating a luminance level associated with said representative hue; utilizing said color book to convert said representative luminance, hue and saturation values to representative inking values forming said representative object color; and correcting the colors of said object image which are in the vicinity, in color space, of said representative image color, to colors in the vicinity, in color space, of said representative object color.
Claim 3
Independent Claim
211 words
A method for determining the colors with which to print an image of an object such that printed output colors approximately match colors of the object, the method comprising the steps of: measuring colors of said object; measuring a representative sample of a color gamut of a printing press on which said image is to be printed, thereby to provide a color conversion book converting from ink values to colorimeter values; determining a representative image color of an object image showing mainly said object having colors, some of said colors being in vicinity, in color space, of a representative object color; the step of determining comprising the steps of: utilizing said color book to convert the colors of said object image from inking values to their luminance, hue and saturation values; generating representative luminance, hue and saturation values over said colors of said object image; utilizing said color book to convert said representative luminance, hue and saturation values to representative inking values forming said representative image color; determining a representative object color of said colors of said object; correcting the colors of said object image which are in the vicinity, in color space, of said representative image color, to colors in the vicinity, in color space, of said representative object color.
Claim 4
Independent Claim
211 words
A method for determining the colors with which to print an image of an object such that printed output colors approximately match colors of the object, the method comprising the steps of: measuring colors of said object; measuring a representative sample of a color gamut of a printing press on which said image is to be printed, thereby to provide a color conversion book converting from ink values to colorimeter values; determining a representative image color of an object image showing mainly said object having colors, some of said colors being in vicinity, in color space, of a representative object color; the step of determining comprising the steps of: utilizing said color book to convert the colors of said object image from inking values to their luminance, hue and saturation values; generating representative luminance, hue and saturation values over said colors of said object image; utilizing said color book to convert said representative luminance, hue and saturation values to representative inking values forming said representative image color; determining a representative object color of said colors of said object; correcting the colors of said object image which are in the vicinity, in color space, of said representative image color, to colors in the vicinity, in color space, of said representative object color.
Claim 5
Dependent Claim
91 words
A method according to claim 2 and wherein said step of generating representative luminance, hue and saturation values over said colors of said object image comprises the steps of: generating a histogram of saturation weighted hue from the hue and saturation values of said colors of said object image; selecting a hue value having a highest saturation level, as the representative hue value; generating the saturation level close to the saturation level at which said representative hue value was found; and generating a luminance level associated with said representative hue value.
References Cited (Backward Citations)
US2920131A
Cited
US3708614A
Cited
US3663744A
Cited
US3679816A
Cited
US3763310A
Cited
US3780218A
Cited
US3871023A
Cited
US3882534A
Cited
US3959813A
Cited
US4091411A
Cited
US4051510A
Cited
US4314274A
Cited
US4296432A
Cited
US4458265A
Cited
US4511916A
Cited
US4694286A
Cited
US4668979A
Cited
US4862251A
Cited
US4857994A
Cited
US4647963A
Cited
US4954883A
Cited
US4819077A
Cited
US5181105A
Cited
US5060060A
Cited
US4805016A
Cited
US4812902A
Cited
US4928167A
Cited
US5142356A
Cited
US5140413A
Cited
US4864357A
Cited
US4959711A
Cited
US4811108A
Cited
US4833546A
Cited
US4929978A
Cited
US4924323A
Cited
US4956718A
Cited
US5028991A
Cited
US5172244A
Cited
US4977448A
Cited
US5126834A
Cited
US5109274A
Cited
US5204948A
Cited
US5077604A
Cited
US5121199A
Cited
US5233413A
Cited
US5339176A
Cited
US5072305A
Cited
US5270808A
Cited
US5317426A
Cited
US5296945A
Cited
US5289295A
Cited
US5255076A
Cited
US5481380A
Cited
US5442717A
Cited
EP0580365A1
Cited
US5612795A
Cited
US5497431A
Cited
GB2275584A
Cited
US5696839A
Cited
US5537516A
Cited
US5596428A
Cited
US5659490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-10-25 | 2003-04-26 | 2003-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-25 | 2007-04-26 | 2007-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-25 | 2011-04-26 | 2011-10-26 | $7700.00 | Window Closed / Lapsed |