Image analysis – Image enhancement or restoration – Edge or contour enhancement
Reexamination Certificate
2007-10-02
2007-10-02
Rogers, Scott A. (Department: 2625)
Image analysis
Image enhancement or restoration
Edge or contour enhancement
C375S240270
Reexamination Certificate
active
11619913
ABSTRACT:
A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
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Kim Hyun Mun
Kim Sung Deuk
Lee Young Su
Ra Jong Beom
LG Electronics Inc.
Rogers Scott A.
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