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Differential pulse code modulation intra prediction for high efficiency video coding

  • US 9,253,508 B2
  • Filed: 11/02/2012
  • Issued: 02/02/2016
  • Est. Priority Date: 11/04/2011
  • Status: Active Grant
First Claim
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1. A video codec comprising:

  • a memory; and

    a processor operably coupled to the memory and configured to;

    compute a reconstructed pixel for a current block based on a residual pixel and a first prediction pixel, wherein the first prediction pixel for the current block is based on an external reference pixel located in a neighboring block;

    compute a second prediction pixel in a directional intra prediction mode, which includes both horizontal and vertical directions, based on the reconstructed pixel,wherein the first and second prediction pixels are located in a same block of a video frame,wherein the first prediction pixel is one position before the second prediction pixel according to a direction of the directional intra prediction mode,wherein each particular prediction pixel is immediately adjacent to the reconstructed pixel used to compute the particular prediction pixel, andwherein the first prediction pixel and the second prediction pixel are used for pixel-by-pixel coding of the video frame.

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