EP1024454A2
Expired / Lapsed
EP
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A method for preserving spatial detail when applying a multidimensional tonal transform to a digital color image
Assignee: Eastman Kodak Co
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Filing: 2000-01-17
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Granted: —
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Expires: 2020-01-17
Abstract
Abstract A method for adjusting the color and tonal characteristics of a digital image, the method comprises receiving a digital image having two or more digital image channels; (b) separating each digital image channel into two signals; (c) modifying one of the signals with a multidimensional transform for adjusting the color and tonal characteristics of the digital image; and (d) combining the output of (c) with the remaining signal for producing an enhanced digital image.
Inventors
- 👤 Edward B. Eastman Kodak Company P.L.S Gindele
- 👤 Andrew Eastman Kodak Company P.L.S Gallagher
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:08
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/40; H04N1/407
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A method for adjusting the color and tonal characteristics of a digital
image, the method comprising the steps of: (a) receiving a digital image having two or more digital image channels; (b) separating each digital image channel into two signals; (c) modifying one of the signals with a multidimensional transform for adjusting
the color and tonal characteristics of the digital image; and (d) combining an output of step (c) with the remaining signal for producing an
enhanced digital image.
Claim 2
Dependent Claim
23 words
The method as in claim 1, wherein step (b) includes using a spatial filter for
separating each digital image channel into two signals.
Claim 3
Dependent Claim
23 words
The method as in claim 2, wherein step (b) includes using a control signal
for separating each digital image channel into two signals.
Claim 4
Dependent Claim
21 words
The method as in claim 3 further comprising creating the control signal
from a spatially filtered version of the digital image.
Claim 5
Dependent Claim
20 words
The method as in claim 1, wherein step (c) further comprises using a 3
dimensional look-up-table as the multidimensional transform.
Claim 6
Dependent Claim
32 words
The method as in claim 4, wherein step (c) further comprises using a 3
dimensional look-up-table as the multidimensional transform further comprising
the step of modifying the remaining signal before step (d).
Claim 7
Independent Claim
85 words
A system for adjusting the color and tonal characteristics of a digital image,
the system comprising: (a) means for receiving a digital image having two or more digital image channels; (b) means for separating each digital image channel into two signals; (c) means for modifying one of the signals with a multidimensional transform for
adjusting the color and tonal characteristics of the digital image; and (d) means for combining an output of the modifying means with the remaining
signal for producing an enhanced digital image.
Claim 8
Dependent Claim
24 words
The system as in claim 7, wherein the separating means includes using a
spatial filter for separating each digital image channel into two signals.
Claim 9
Dependent Claim
23 words
The system as in claim 8, wherein step (b) includes using a control signal
for separating each digital image channel into two signals.
Claim 10
Dependent Claim
21 words
The system as in claim 7, wherein the modifying means further comprises
using a 3 dimensional look-up-table as the multidimensional transform.
References Cited (Backward Citations)
No citation records indexed.
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