Patent ID: 9686543
Date: 2017-06-20
CPC Classifications: H04N

Claim:
1. An interlayer prediction decoding method, using one or more processors and a memory, the method comprising: obtaining a residual block with respect to a current block from an input bitstream; determining whether to apply interlayer prediction to an enhancement layer; performing prediction on the current block of the enhancement layer based on a picture of a reference layer, in response to a determination that the interlayer prediction is to be applied; and reconstructing the current block based on the residual block and a prediction block obtained by performing the prediction on the current block, wherein performing the prediction on the current block comprises: reconstructing the picture of the reference layer by decoding the input bitstream including the reference layer; generating, from the reconstructed picture of the reference layer, a generalized reference picture for interlayer prediction of a current picture of the enhancement layer; constructing a reference picture list for the current picture by adding the generalized reference picture to at least one reference picture belonging to a same enhancement layer as the current picture; and performing the prediction on the current block of the enhancement layer based on the reference picture list and motion information of the current block.