Systems and methods for cross-component sample offset filter information signaling

A method of video encoding performed at a computing system having memory and one or more processors, the method comprising:

• receiving video data comprising a plurality of blocks, including a first block;
• determining a set of parameters, including a first parameter indicating a number of bands, for applying a cross-component sample offset (CCSO) to the first block;
• determining a delta between the first parameter and a reference CCSO parameter indicating a number of bands for a second block of the plurality of blocks, wherein a second CCSO is applied to the second block using the reference CCSO parameter;
• and
• signaling a syntax element value in a video bitstream, the syntax element value indicating the delta between the first parameter and the reference CCSO parameter.

A non-transitory computer-readable storage medium storing one or more instructions and a video bitstream that is generated by a video encoding method, the one or more instructions when executed by a processor, cause a computing system to perform the video encoding method, the video encoding method comprising:

• determining a set of parameters, including a cross-component sample offset (CCSO) parameter indicating a number of bands for a current block of video data;
• determining a delta between the CCSO parameter and a reference CCSO parameter, wherein a second CCSO is applied to a second block of the video data using the reference CCSO parameter;
• and
• signaling, in the video bitstream, a syntax element that indicates the delta between the CCSO parameter indicating the number of bands for the current block and the reference CCSO parameter indicating the number of bands for the second block.