Method and apparatus for encoding/decoding image information
First Claim
Patent Images
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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Abstract
The present invention relates to a deblocking filtering method, a method for inducing bs (boundary strength) therefor, and a method and an apparatus for encoding/decoding using the same. The method for inducing the bS of the present invention comprises the steps of: inducing a boundary of a deblocking filtering unit block as a unit block for applying the deblocking filtering; and setting the bS according to each bS setting unit block within the deblocking filtering unit block, wherein the bS setting step can set a bS value for a target boundary corresponding to a boundary of the deblocking filtering unit block as the bs setting unit block.
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Citations
7 Claims
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1. A method of deblocking filtering, the method comprising:
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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, and wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification