Method and apparatus for encoding/decoding image and recording medium for storing bitstream
AssigneesHyundai Motor Company, Kia Corporation
InventorsJungah Choi, Jin Heo, Seung Wook Park
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Abstract
A method and an apparatus for encoding/decoding an image, a recording medium for storing a bitstream, and a transmission method are provided. The method for decoding an image includes determining a transform type of a current block, determining a coefficient sign prediction target based on the transform type, and predicting a sign of a coefficient corresponding to the coefficient sign prediction target, and the coefficient sign prediction target may be specified as a coefficient sign prediction area or the number of coefficients corresponding to the coefficient sign prediction target.
Claims13
A method for decoding an image, the method comprising:
- determining a transform type of a current block;
- determining a coefficient sign prediction target of the current block based on the transform type;
- and
- predicting a sign of a coefficient corresponding to the coefficient sign prediction target,
- wherein the coefficient sign prediction target is specified as a coefficient sign prediction area or the number of coefficients corresponding to the coefficient sign prediction target.
A method for encoding an image, the method comprising:
- determining a transform type of a current block;
- determining a coefficient sign prediction target of the current block based on the transform type;
- and
- predicting a sign of a coefficient corresponding to the coefficient sign prediction target,
- wherein the coefficient sign prediction target is specified as a coefficient sign prediction area or the number of coefficients corresponding to the coefficient sign prediction target.
A non-transitory computer-readable recording medium for storing a bitstream, which is generated by a method for encoding an image,
- wherein the method for encoding an image comprises:
- determining a transform type of a current block;
- determining a coefficient sign prediction target of the current block based on the transform type;
- and
- predicting a sign of a coefficient corresponding to the coefficient sign prediction target, and
- wherein the coefficient sign prediction target is specified as a coefficient sign prediction area or the number of coefficients corresponding to the coefficient sign prediction target.
A method for transmitting a bitstream, which is generated by a method for encoding an image, the method comprising transmitting the bitstream,
- wherein the method for encoding an image comprises:
- determining a transform type of a current block;
- determining a coefficient sign prediction target of the current block based on the transform type;
- and
- predicting a sign of a coefficient corresponding to the coefficient sign prediction target,
- wherein the coefficient sign prediction target is specified as a coefficient sign prediction area or the number of coefficients corresponding to the coefficient sign prediction target.
Dependencies are inferred from the claim text.