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LOW COMPLEXITY INTERPOLATION FILTERING WITH ADAPTIVE TAP SIZE

  • US 20120170650A1
  • Filed: 01/03/2012
  • Published: 07/05/2012
  • Est. Priority Date: 01/05/2011
  • Status: Active Grant
First Claim
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1. A method of coding blocks of video data, the method comprising:

  • obtaining a block of pixels comprising integer pixel values corresponding to integer pixel positions within the block;

    computing sub-pixel values corresponding to sub-pixel positions associated with the block, wherein computing the sub-pixel values comprises;

    computing a first sub-pixel value by applying a first interpolation filter defining a first one-dimensional array of filter coefficients corresponding to a first set of filter support positions within the block; and

    computing a second sub-pixel value by applying a second interpolation filter defining a second one-dimensional array of filter coefficients corresponding to a second set of filter support positions within the block,wherein the first one-dimensional array is selected to comprise more filter coefficients than the second one-dimensional array based on a scanning order associated with the block, andgenerating a prediction block of pixels based on one or more of the computed sub-pixel values.

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