Local Illumination Compensation for Inter Prediction

An apparatus for video decoding, comprising:

• a memory to store an instruction;
• and
• a processor to execute the instruction such that the processor is configured to:
• receive and decode a bit-stream to obtain a prediction residual and prediction mode information indicating a mode of Local Illumination Compensation (LIC) to be enabled;
• form a residual block from the prediction residual and form a prediction block from the prediction mode information;
• and
• reconstruct a reconstructed block from the residual block and prediction block;
• wherein LIC parameters for the mode of LIC are calculated with a limited number of reference sample pairs, and wherein a reference sample pair refers to a luma reference sample and a chroma reference sample.

A non-transitory machine-readable storage medium, having instructions stored on the medium, the instructions configured to, when executed, cause a machine to:

• receive and decode a bit-stream to obtain a prediction residual and prediction mode information indicating a mode of Local Illumination Compensation (LIC) to be enabled;
• form a residual block from the prediction residual and form a prediction block from the prediction mode information;
• and
• reconstruct a reconstructed block from the residual block and prediction block;
• wherein LIC parameters for the mode of LIC are calculated with a limited number of reference sample pairs, and wherein a reference sample pair refers to a luma reference sample and a chroma reference sample.