Generalized sample offset

An apparatus for decoding a video bitstream, the apparatus comprising:

• a memory storing instructions;
• and
• a processor in communication with the memory, wherein, when the processor executes the instructions, the processor is configured to cause the apparatus to:
• apply a sample offset filter to a reconstructed sample of a current component in a current picture from the video bitstream;
• identify an offset type for the sample offset filter, wherein the offset type comprises a gradient offset (GO) or a band offset (BO);
• and
• determine a filtered sample value of the sample offset filter based on the reconstructed sample and the selected offset type.

A non-transitory computer readable storage medium storing instructions, wherein, when the instructions are executed by a processor, the instructions are configured to cause the processor to:

• apply a sample offset filter to a reconstructed sample of a current component in a current picture from the video bitstream;
• identify an offset type for the sample offset filter, wherein the offset type comprises a gradient offset (GO) or a band offset (BO);
• determine an output value based on the reconstructed sample and the selected offset type;
• and
• determine a filtered sample value of the sample offset filter based on the output value and the reconstructed sample.