Systems and methods for inter prediction compensation

A non-transitory computer-readable storage medium storing a bitstream, wherein the bitstream comprises:

• an enabling flag associated with video data, the enabling flag indicating whether an inter predictor correction is enabled for a coding block for an inter prediction process;
• and
• an index associated with the inter predictor correction based on which the inter predictor correction is performed;
• wherein the enabled inter predictor correction is performed by:
• obtaining a plurality of predicted samples within a predicted block from a top boundary and a left boundary of the predicted block corresponding to the coding block;
• obtaining a plurality of reconstructed samples from top neighboring reconstructed samples and left neighboring reconstructed samples of the coding block;
• deriving one or more parameters for the inter predictor correction based on the plurality of the predicted samples and the plurality of the reconstructed samples;
• and
• deriving a corrected predicted block based on the one or more parameters and the predicted block.

An apparatus, comprising:

• a memory configured to store instructions;
• and
• one or more processors configured to execute the instructions to cause the apparatus to:
• determine whether an inter predictor correction is enabled for a coding block;
• and
• when the inter predictor correction is enabled for the coding block, perform the inter predictor correction by:
• obtaining a plurality of predicted samples within a predicted block from a top boundary and a left boundary of the predicted block corresponding to the coding block, wherein the predicted samples are within the predicted block;
• obtaining a plurality of reconstructed samples from top neighboring reconstructed samples and left neighboring reconstructed samples of the coding block;
• and
• deriving one or more parameters for the inter predictor correction based on the plurality of the predicted samples and the plurality of the reconstructed samples;
• and deriving a corrected predicted block based on the one or more parameters and the predicted block.