VIDEO DECODING METHOD AND APPARATUS USING THE SAME

摘要

Disclosed is a video decoding method that decodes a bitstream, the method including receiving a picture parameter set (PPS) comprising at least one of first information indicating whether the same reference picture list is applied to slices comprised in a picture and second information indicating whether additional information on modification of the reference picture list is present, and deriving a construction of the reference picture list based on the PPS. Accordingly, there are provided a method and an apparatus for signaling by a picture whether the construction of the reference picture list is modified when constructing the reference picture list.

主权项

1. A video decoding method comprising:
receiving a bitstream comprising information on a picture to be decoded and a picture parameter set (PPS), the PPS comprising list modification flag or list modification information indicating whether additional information on modification of a reference picture list for decoding the picture is present; deriving the reference picture list for the picture; determining, based on prediction mode information acquired through the bitstream, whether intra prediction or inter prediction is applied to a prediction target block; and generating the prediction target block using a reference picture comprised in the reference picture list when inter prediction is applied to the prediction target block, wherein the deriving of the reference picture list comprises constructing a forward short-term reference picture (STRP) set comprising pictures having smaller picture order count (POC) than POC of a picture comprising the prediction target block, a backward STRP set comprising pictures having greater POC than the POC of the picture comprising the prediction target block, and a long-term reference picture (LTRP) set, and generating a reference picture list based on the forward STRP set, the backward STRP set, and the LTRP set.