ILLUMINATION COMPENSATION DEVICE, LM PREDICTION DEVICE, IMAGE DECODING DEVICE, IMAGE CODING DEVICE

摘要

By either subsampling neighbor pixels and deriving an illumination variation parameter, or deriving one normalization shift value of two normalization shift values for normalizing parameters which are used when deriving the illumination variation parameter, with a dependency on the other normalization shift value, an amount of calculation for illumination compensation is reduced.