Method, apparatus, and medium for visual data processing

An apparatus for visual data processing comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:

• determine, for a conversion between at least one bitstream of visual data and the visual data, a residual representation of the visual data at least based on a first probability distribution parameter of the visual data and at least one gain parameter, the residual representation representing a residual value compared to a second probability distribution representation of the visual data, the at least one gain parameter adjusting a value range of the residual representation;
• and
• perform the conversion based on the residual representation.

A non-transitory computer-readable storage medium storing instructions that cause a processor to:

• determine, for a conversion between at least one bitstream of visual data and the visual data, a residual representation of the visual data at least based on a first probability distribution parameter of the visual data and at least one gain parameter, the residual representation representing a residual value compared to a second probability distribution representation of the visual data, the at least one gain parameter adjusting a value range of the residual representation;
• and
• perform the conversion based on the residual representation.

A non-transitory computer-readable recording medium storing at least one bitstream of visual data which is generated by a method performed by an apparatus for visual data processing, wherein the method comprises:

• determining a residual representation of the visual data at least based on a first probability distribution parameter of the visual data and at least one gain parameter, the residual representation representing a residual value compared to a second probability distribution representation of the visual data, the at least one gain parameter adjusting a value range of the residual representation;
• and
• generating the at least one bitstream based on the residual representation.