Signaling signed band offset values for sample adaptive offset (SAO) filtering in video coding

摘要

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.

主权项

1. A method for sample adaptive offset (SAO) filtering in a video decoder, the method comprising:
receiving an entropy encoded bit stream; decoding the entropy encoded bit stream; extracting from the decoded bit stream SAO band parameters for a first non-overlapping region wherein the SAO band parameters comprises a sequence of values of magnitudes of SAO band offsets without sign followed by signs of only the non-zero values of magnitudes of the SAO band offset values in the decoded bit stream; and performing SAO filtering of the first non-overlapping region using the extracted SAO band parameters.