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US 10,708,603 B2Granted
Reduced complexity coefficient transmission for adaptive loop filtering (ALF) in video coding
AssigneeTexas Instruments Incorporated
InventorMadhukar Budagavi
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Abstract
A method for adaptive loop filtering is provided that includes determining a coefficient value for each coefficient position of an adaptive loop filter, applying the adaptive loop filter to at least a portion of a reconstructed picture using the coefficient values, and entropy encoding coefficient values into a compressed bit stream using predetermined short binary codes, wherein the short binary code used depends on the coefficient position of the coefficient value.
Claims16
A method for adaptive loop filtering, the method comprising:
- determining a coefficient value of an adaptive loop filter;
- determining a bias of the coefficient value based on a coefficient position of the coefficient value;
- altering the coefficient value to remove the bias;
- applying the adaptive loop filter to at least a portion of a reconstructed picture using the altered coefficient value;
- and
- entropy encoding the altered coefficient value into a compressed bit stream using a short binary code, wherein the short binary code used depends on the coefficient position of the coefficient value.
3 more elements
A method for adaptive loop filtering, the method comprising:
- entropy decoding a coefficient value from a compressed video bit stream using a short binary code, wherein the short binary code used depends on a coefficient position of the coefficient value;
- and
- determining a bias of the coefficient value based on a coefficient position of the coefficient value;
- altering the coefficient value to add the bias;
- applying the adaptive loop filter to a portion of a reconstructed picture using the altered coefficient value.
2 more elements
Dependencies are inferred from the claim text.