Signaling Signed Band Offset Values for Sample Adaptive Offset (SAO) Filtering in Video Coding
AssigneeTexas Instruments Incorporated
InventorsVivienne Sze, Madhukar Budagavi
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Abstract
A method for signaling sample adaptive offset (SAO) band offset syntax elements in a video encoder is provided that includes receiving a plurality of band offset syntax elements, entropy encoding an absolute value of a magnitude of each band offset syntax element in a compressed video bit stream, and entropy encoding a sign of each non-zero band offset syntax element in the compressed video bit stream following the absolute values of the magnitudes.
Claims6
A method for signaling sample adaptive offset (SAO) band offset syntax elements in a video encoder, the method comprising:
- receiving a plurality of band offset syntax elements;
- entropy encoding an absolute value of a magnitude of each band offset syntax element in a compressed video bit stream;
- and
- entropy encoding a sign of each non-zero band offset syntax element in the compressed video bit stream following the absolute values of the magnitudes.
A method for decoding sample adaptive offset (SAO) band offset syntax elements in a video decoder, the method comprising:
- entropy decoding an absolute value of a magnitude of each band offset syntax element of a plurality of band offset syntax elements from a compressed video bit stream;
- and
- entropy decoding a sign of each non-zero band offset syntax element from the compressed video bit stream, wherein signs are signaled after the absolute values of the magnitudes in the compressed video bit stream.
An apparatus configured to signal sample adaptive offset (SAO) band offset syntax elements during encoding of a video sequence, the apparatus comprising:
- means for receiving a plurality of band offset syntax elements;
- means for entropy encoding an absolute value of a magnitude of each band offset syntax element in a compressed video bit stream;
- and
- means for entropy encoding a sign of each non-zero band offset syntax element in the compressed video bit stream following the absolute values of the magnitudes.
Dependencies are inferred from the claim text.