METHOD AND AN APPARATUS FOR PROCESSING A VIDEO SIGNAL

  • US 20100086034A1
  • Filed: 10/06/2009
  • Published: 04/08/2010
  • Est. Priority Date: 10/06/2008
  • Status: Active Grant
First Claim
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1. A method of decoding a video signal, comprising the steps of:

  • obtaining a macroblock type;

    obtaining a sub-macroblock type when a macroblock includes a plurality of coded sub-macroblocks according the macroblock type;

    obtaining flag information indicating a DC (discrete cosine) transform size;

    determining the DC transform size of the coded sub-macroblock based on the flag information;

    when the sub-macroblock is intra prediction coded based on the sub-macroblock type, determining a prediction size of the intra prediction coded sub-macroblock based on the determined DC transform size;

    obtaining prediction direction information from a block adjacent to the sub-macroblock based on the prediction size of the sub-macroblock; and

    obtaining a prediction value of the sub-macroblock based on the prediction direction information.

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