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US 2025/0097435 A1Published application
Method and a device for picture encoding and decoding
AssigneeInterDigital Madison Patent Holdings, SAS
InventorsPhilippe BORDES, Ya CHEN, Fabien RACAPE, Franck GALPIN
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Abstract
A decoding method for decoding blocks of a picture part is disclosed that comprises: decoding a plurality of candidate sets of filter parameters from a bitstream; decoding for a current block of said picture an index identifying one of the candidate sets of filter parameters from said bitstream; decoding said current block from said bitstream; and filtering said decoded current block with the candidate set of filter parameters identified by said decoded index.
Claims20
A method comprising:
- decoding a first information set for luma samples and a second information set for chroma samples, each information set containing a plurality of candidate sets of filter parameters;
- obtaining for a current block of a picture part an information indicating with a first value that a single index identifies a first candidate set of filter parameters in the first information set and a second candidate set of filter parameters in the second information set and indicating with a second value that a first index identifies the first candidate set of filter parameters in the first information set and a second index identifies the second candidate set of filter parameters in the second information set;
- decoding, for the current block, the single index or the first and second indexes based on the obtained information;
- decoding said current block;
- and
- filtering luma samples and chroma samples of said decoded current block with the candidate sets of filter parameters identified by the single index or by the first and second indexes.
3 more elements
A method comprising:
- determining a reconstructed block corresponding a reconstructed version of a current block of a picture part;
- obtaining a first plurality of candidate sets of filter parameters for luma samples and a second plurality of candidate sets of filter parameters for chroma samples;
- encoding a first information set containing the first plurality and a second information set containing the second plurality;
- encoding for the current block an information indicating with a first value that a single index is used to identify a first candidate set of filter parameters in the first information set and a second candidate set of filter parameters in the second information set and indicating with a second value that a first index is used to identify the first candidate set of filter parameters in the first information set and a second index is used to identify the second candidate set of filter parameters in the second information set;
- filtering the luma samples and the chroma samples of said reconstructed block with the candidate sets of filter parameters identified by the single index or by the first and the second indexes in function of the encoded information;
- and
- encoding data representative of the single index or of the first and the second indexes based on the encoded information.
4 more elements
A decoding device comprising electronic circuitry configured for:
- decoding a first information set for luma samples and a second information set for chroma samples, each information set containing a plurality of candidate sets of filter parameters;
- obtaining for a current block of a picture part an information indicating with a first value that a single index identifies a first candidate set of filter parameters in the first information set and a second candidate set of filter parameters in the second information set and indicating with a second value that a first index identifies the first candidate set of filter parameters in the first information set and a second index identifies the second candidate set of filter parameters in the second information set;
- decoding, for the current block, the single index or the first and second indexes based on the obtained information;
- decoding said current block;
- and
- filtering luma samples and chroma samples of said decoded current block with the candidate sets of filter parameters identified by the single index or by the first and second indexes.
3 more elements
An encoding device comprising electronic circuitry configured for:
- determining a reconstructed block corresponding a reconstructed version of a current block of a picture part;
- obtaining a first plurality of candidate sets of filter parameters for luma samples and a second plurality of candidate sets of filter parameters for chroma samples;
- encoding a first information set containing the first plurality and a second information set containing the second plurality;
- encoding for the current block an information indicating with a first value that a single index is used to identify a first candidate set of filter parameters in the first information set and a second candidate set of filter parameters in the second information set and indicating with a second value that a first index is used to identify the first candidate set of filter parameters in the first information set and a second index is used to identify the second candidate set of filter parameters in the second information set;
- filtering the luma samples and the chroma samples of said reconstructed block with the candidate sets of filter parameters identified by the single index or by the first and the second indexes in function of the encoded information;
- and
- encoding data representative of the single index or of the first and the second indexes based on the encoded information.
4 more elements
Dependencies are inferred from the claim text.