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US 12,604,043 B2Granted
Sample adaptive offset (SAO) parameter signaling
AssigneeTexas Instruments Incorporated
InventorsWoo-Shik Kim, Do-Kyoung Kwon, Minhua Zhou
Life of this patent
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Abstract
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.
Claims20
A system comprising:
- a receiver configurable to receive a bit stream;
- and
- a decoder coupled to the receiver and configurable to:
- decode a first flag in the bit stream, wherein the first flag indicates that edge offset sample adaptive offset (SAO) filtering of a luma component is not applied, and wherein the first flag indicates that band offset SAO filtering of the luma component is not applied;
- decode a second flag in the bit stream, wherein the second flag indicates that edge offset SAO filtering of a chroma component is applied;
- and
- apply edge offset SAO filtering to the chroma component based on the second flag.
4 more elements
A system comprising:
- a frame buffer;
- and
- a decoder coupled to the frame buffer and configurable to:
- decode a first flag in a bit stream, wherein the first flag indicates that edge offset sample adaptive offset (SAO) filtering is not used for a luma component, and wherein the first flag indicates that band offset SAO filtering is not used for the luma component;
- decode a second flag in the bit stream, wherein the second flag indicates that edge offset SAO filtering is used for a chroma component;
- apply edge offset SAO filtering to the chroma component based on the second flag to generate a picture;
- and
- store the picture in the frame buffer.
5 more elements
A method comprising:
- receiving a bit stream;
- decoding a first flag in the bit stream, wherein the first flag indicates that edge offset sample adaptive offset (SAO) filtering of a luma component is not applied, and wherein the first flag indicates that band offset SAO filtering is not used for the luma component;
- decoding a second flag in the bit stream, wherein the second flag indicates that edge offset SAO filtering of a chroma component is applied;
- and
- applying edge offset SAO filtering to the chroma component based on the second flag.
2 more elements
Dependencies are inferred from the claim text.