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Object boundary padding technique for improving MPEG-4 video compression efficiency

Object boundary padding technique for improving MPEG-4 video compression efficiency

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In MPEG-4, the boundary macro-blocks of reference video objects are padded by replicating the boundary samples towards the exterior. The authors propose the introduction of a linear extrapolation based pre-padding step to minimise prediction errors. Experimental results indicate that gains of up to 7% can be achieved for boundary macro-block coding by this proposed technique.

http://iet.metastore.ingenta.com/content/journals/10.1049/el_19990946
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