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Method and apparatus for encoding/decoding image information

  • US 8,971,419 B2
  • Filed: 03/20/2014
  • Issued: 03/03/2015
  • Est. Priority Date: 09/20/2011
  • Status: Active Grant
First Claim
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1. A method of deblocking filtering, the method comprising:

  • deriving prediction samples in a current picture based on an inter prediction or an intra prediction;

    reconstructing the current picture based on addition of the prediction samples and residual samples;

    deriving a boundary strength (bS) of a target boundary by a bS setting unit boundary in the reconstructed picture blocks;

    determining whether deblocking filtering is to be applied on the target boundary in the reconstructed picture by a deblocking filtering unit boundary based on the bS of the target boundary being larger than 0;

    determining whether strong filtering is to be applied or weak filtering is to be applied for the target boundary based on determining that the deblocking filtering is to be applied to the target boundary;

    applying the strong filtering to the target boundary based on determining that the strong filtering is to be applied to the target boundary; and

    applying the weak filtering to the target boundary based on determining that the weak filtering is to be applied to the target boundary,wherein, in the operation of deriving the bS of the target boundary, the bS value is set for the target boundary, the target boundary being a boundary that overlaps both the deblocking filtering unit boundary and the bS setting unit boundary, andwherein the deblocking filtering unit boundary is a boundary of an 8×

    8 pixel block and the bS setting unit boundary is a boundary of a 4×

    4 pixel block.

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