Method for enhancing performance of residual prediction, video encoder, and video decoder using it

摘要

A method and apparatus for enhancing the performance of residual prediction in a multi-layered video codec are provided. A residual prediction method includes calculating a first residual signal for a current layer block; calculating a second residual signal for a lower layer block corresponding to the current layer block; performing scaling by multiplying the second residual signal by a scaling factor; and calculating a difference between the first residual signal and the scaled second residual signal.