Image analysis – Image enhancement or restoration – Image filter
Reexamination Certificate
2007-10-09
2007-10-09
Alavi, Amir (Department: 2624)
Image analysis
Image enhancement or restoration
Image filter
Reexamination Certificate
active
10294860
ABSTRACT:
A method of processing a color digital image having a luminance channel and one or more chrominance channels to improve the tone scale characteristics of the image, includes the steps of: producing a control signal from the one or more chrominance channels; generating a pedestal signal containing mainly low frequency modulation by filtering the luminance channel with a spatial filter, whereby the operation of the spatial filter is modulated by the control signal; and producing a texture signal by subtracting the pedestal signal from the luminance channel.
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U.S. Appl. No. 09/457,036, filed by Gallagher, Dec. 8, 1999.
Gallagher Andrew C.
Gindele Edward B.
Alavi Amir
Chose Thomas H.
Eastman Kodak Company
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