Image analysis – Image enhancement or restoration – Edge or contour enhancement
Reexamination Certificate
2003-10-29
2009-11-10
Werner, Brian P (Department: 2624)
Image analysis
Image enhancement or restoration
Edge or contour enhancement
C382S260000, C382S261000, C382S266000, C382S270000, C382S272000, C348S610000
Reexamination Certificate
active
07616829
ABSTRACT:
A post-processing manager provides reconstructed block based picture post-processing that is uncoupled from picture decoding by dividing a reconstructed image that was encoded using block based processing into non-overlapping blocks, creating a DC image by computing the DC value of each block, creating a zero mean image by subtracting the DC value of each block from the corresponding pixels of that block, filtering the DC image and adding the filtered DC image to the zero mean image. A weak filtering operation can be applied to reduce blocking artifacts, and a strong filtering operation can be applied to smooth luminance transitions.
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Bilbrey Brett
Ouzilevski Alexei V.
Apple Inc.
Fenwick & West LLP
Torres José M
Werner Brian P
LandOfFree
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