Sample Adaptive Offset (SAO) Parameter Signaling

摘要

Techniques for signaling of sample adaptive offset (SAO) information that may reduce the coding rate for signaling such information in the compressed bit stream are provided. More specifically, techniques are provided that allow SAO information common to two or more of the color components to be signaled using one or more syntax elements (flags or indicators) representative of the common information. These techniques reduce the need to signal SAO information separately for each color component.

主权项

1. A method for sample adaptive offset (SAO) parameter signaling in a video encoder, the method comprising:
determining, for a largest coding unit (LCU) of a reconstructed picture, SAO parameters for Y, Cb, and Cr color components of the LCU, wherein the determining comprises determining whether or not SAO filtering is to be applied to the color components; entropy encoding a first flag in a compressed video bit stream, the first flag indicating whether or not SAO filtering of the Y color component is enabled for the LCU; and entropy encoding a second flag in the compressed video bit stream, the second flag indicating whether or not SAO filtering of the Cb and Cr components is enabled.