US6091861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sharpening algorithm adjusted for measured exposure of photofinishing images
Assignee: Kodak Alaris LLC
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Filing: 1998-02-03
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Granted: 2000-07-18
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Expires: 2018-02-03
Abstract
Abstract A method for processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the exposure of the original image; and based on the exposure, sharpening the digital image using an image sharpening system. A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the type of the photographic media and magnification to produce the final image; and based on the type of the photographic media, sharpening the digital image using an image sharpening system. A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media and magnification to produce the final image; determining the type of the photographic media; determining the exposure of the original image; deriving the print grain index from the media type, magnification, and exposure of the original image; determining the sharpening level of the digital image based on the print grain index; and sharpening the digital image using an image sharpening system.
Inventors
- 👤 Michael P. Keyes
- 👤 Karen A. Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:15
CPC Classifications
G; G06; G06T; G06T5/00; G06T5/73; G06T5/75; G06T5/20; H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/58; H04N1/60; H04N1/6094
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the type of said photographic media; determining the magnification necessary to convert said digital image to the final image; and based on the type of said photographic media, sharpening said digital image using an image sharpening system.
Claim 2
Independent Claim
61 words
A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the type of said photographic media; determining the magnification necessary to convert said digital image to the final image; and based on the type of said photographic media, sharpening said digital image using an image sharpening system.
Claim 3
Dependent Claim
42 words
The method of claim 1 including the step of determining the exposure of said digital image, and wherein said sharpening step uses an image sharpening system based on said exposure as well as said type of said photographic media and said magnification.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein said exposed photographic media is one of negative film, reversal film, and photographic print.
Claim 5
Dependent Claim
32 words
The method of claim 1 wherein said type of said photographic media is one or more of the following, film speed, negative or reversal film, format size (e. g., 35 mm, APS).
Claim 6
Dependent Claim
26 words
The method of claim 1 wherein said providing step includes the step of scanning an original image on exposed photographic media to produce said digital image.
Claim 7
Dependent Claim
17 words
The method of claim 5 including the step of printing said sharpened image on photographic print media.
Claim 8
Dependent Claim
18 words
The method of claim 2 wherein said exposure determining step uses a scene based system for estimating exposure.
Claim 9
Dependent Claim
22 words
The method of claim 2 wherein said exposure determining step uses exposure data recorded at the time said original image was generated.
Claim 10
Dependent Claim
41 words
The method of claim 2 including the step of determining a print grain index based on said exposure, said photographic media type, and said magnification, and wherein said sharpening step uses an image sharpening system which uses said print grain index.
Claim 11
Dependent Claim
34 words
The method of claim 9 wherein said image sharpening system is an unsharp masking system and wherein said print grain index is used to determine an image sharpening parameter of said unsharp masking system.
Claim 12
Independent Claim
89 words
A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the type of the photographic media; determining the magnification necessary to convert said digital image to the final image; determining the exposure of the original image; deriving the print grain index from the media type, magnification, and exposure of the original image; determining the sharpening of the digital image based on said print grain index; and sharpening the digital image using an image sharpening system.
Claim 13
Independent Claim
89 words
A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the type of the photographic media; determining the magnification necessary to convert said digital image to the final image; determining the exposure of the original image; deriving the print grain index from the media type, magnification, and exposure of the original image; determining the sharpening of the digital image based on said print grain index; and sharpening the digital image using an image sharpening system.
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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) | 2003-07-18 | 2004-01-17 | 2004-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-18 | 2008-01-17 | 2008-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-18 | 2012-01-17 | 2012-07-18 | $7700.00 | Window Closed / Lapsed |