Image analysis – Image enhancement or restoration – Image filter
Reexamination Certificate
2007-02-20
2007-02-20
Mehta, Bhavesh M. (Department: 2624)
Image analysis
Image enhancement or restoration
Image filter
C382S274000
Reexamination Certificate
active
10163401
ABSTRACT:
A method of processing a digital image to improve tone scale, includes the steps of: generating a multiresolution image representation of the digital image including a plurality of base digital images and a plurality of residual digital images; applying a texture reducing spatial filter to the base digital images to produce texture reduced base digital images; combining the texture reduced base digital images and the residual digital images s to generate a texture reduced digital image; subtracting the texture reduced digital image from the digital image to produce a texture digital image; applying a compressive tone scale function to the texture reduced digital image to produce a tone scale adjusted digital image having a compressed tone scale in at least a portion of the image; and combining the texture digital image with the tone scale adjusted digital image to produce a processed digital image, whereby the contrast of the digital image is improved without compressing the contrast of the texture in the digital image.
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Gallagher Andrew C.
Gindele Edward B.
Eastman Kodak Company
Mehta Bhavesh M.
Owens Raymond L.
Perungavoor Sath V.
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