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METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO

  • US 20110243233A1
  • Filed: 04/05/2011
  • Published: 10/06/2011
  • Est. Priority Date: 04/05/2010
  • Status: Active Grant
First Claim
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1. A method of encoding video, the method comprising:

  • performing motion estimation on a current block according to a first sub-pixel unit, and obtaining a motion vector in the first sub-pixel unit with respect to the current block;

    interpolating a reference picture indicated by the obtained motion vector according to a second sub-pixel unit smaller than the first sub-pixel unit;

    selecting a second sub-pixel from among sub-pixels in the second sub-pixel unit adjacent to a first sub-pixel in the first sub-pixel unit of the reference picture indicated by the obtained motion vector, wherein the selecting is performed using the interpolated reference picture;

    selecting a corresponding region that has a smaller error with the current block from among a first corresponding region and a second corresponding region, wherein the first corresponding region is of the reference picture indicated by the obtained motion vector and is obtained with respect to the first sub-pixel in the first sub-pixel unit, and the second corresponding region is of the current block and is obtained with respect to the selected second sub-pixel in the second sub-pixel unit; and

    encoding information of the selected corresponding region.

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