Method of reducing a blocking artifact when coding moving pictur

Details Method of reducing a blocking artifact when coding moving pictur Method of reducing a blocking artifact when coding moving pictur

1998-01-22

2000-02-22

Rogers, Scott

Image analysis

Image enhancement or restoration

Edge or contour enhancement

G06K 940, G06T 510

Patent

active

060289678

ABSTRACT:
A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S.sub.0, S.sub.1, and S.sub.2, 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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