Image analysis – Image enhancement or restoration – Image filter
Reexamination Certificate
2006-11-21
2006-11-21
Patel, Kanjibhai (Department: 2624)
Image analysis
Image enhancement or restoration
Image filter
C382S173000, C382S240000
Reexamination Certificate
active
07139437
ABSTRACT:
In a method for removing artifacts in a digital image that has been decoded from a compressed representation of the image, the pixels of the digital image are segmented into low detail pixels, high detail pixels, and boundary pixels, and then a single non-linear filtering method, such as a sigma filtering method, is applied to each pixel in the digital image. By selecting separate filter parameters for the low detail, high detail, and boundary pixels, the removal of artifacts is improved over prior methods.
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Jacoby Keith A.
Jones Paul W.
Eastman Kodak Company
Patel Kanjibhai
Woods David M.
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