Truncation error signaling and adaptive dither for lossy bandwidth compression

An apparatus for data processing, comprising:

• a memory;
• and
• at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to:
• obtain a bitstream associated with a set of residual samples for truncated data and a set of truncation error values for a truncation process, wherein the bitstream corresponds to data associated with display processing, image processing, or the data processing;
• parse, from the bitstream, the set of residual samples for the truncated data and the set of truncation error values to obtain a set of parsed residual samples for the truncated data;
• and
• reconstruct the truncated data based on the set of parsed residual samples and the set of truncation error values, wherein the reconstruction of the truncated data results in untruncated data.

A method of data processing, comprising:

• performing a truncation process for data, wherein the data is associated with display processing, image processing, or the data processing, wherein the truncation process for the data results in truncated data;
• computing a set of truncation error values associated with the truncation process for the truncated data;
• generating a set of residual samples for the truncated data;
• and
• generating a bitstream based on the set of residual samples for the truncated data and the set of truncation error values associated with the truncation process.

A method of data processing, comprising:

• obtaining a bitstream associated with a set of residual samples for truncated data and a set of truncation error values for a truncation process, wherein the bitstream corresponds to data associated with display processing, image processing, or the data processing;
• parsing, from the bitstream, the set of residual samples for the truncated data and the set of truncation error values to obtain a set of parsed residual samples for the truncated data;
• and
• reconstructing the truncated data based on the set of parsed residual samples and the set of truncation error values, wherein the reconstruction of the truncated data results in untruncated data.