Method and apparatus for performing intra-prediction using adaptive filter

  • US 9,781,448 B2
  • Filed: 08/13/2015
  • Issued: 10/03/2017
  • Est. Priority Date: 04/09/2010
  • Status: Active Grant
First Claim
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1. A video decoding apparatus comprising:

  • a processor to determine whether to apply a first filter to a reference pixel value of a current block based on at least one of an intra prediction mode of the current block and a size of the current block,apply the first filter to the reference pixel value if, as a result of the determination, the first filter is determined to be applied, andperform intra-prediction for the current block based on the reference pixel value,wherein when the first filter is determined to be applied, the processor calculates a difference value using the reference pixel values, compares the calculated difference value with a specific threshold and applies the first filter to the reference pixel value based on comparison of the specific threshold and the calculated difference,when the intra-prediction for the current block is performed, the processor determines whether to apply a second filter to a prediction value of the current block based on at least one of the intra prediction mode of the current block and the size of the current block, and applies the second filter to the prediction value of the current block if, as a result of the determination, the second filter is determined to be applied.

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