Video decoding method and apparatus using the same
AssigneeElectronics and Telecommunications Research Institute
InventorsJin Ho LEE, Jung Won KANG, Ha Hyun LEE, Jin Soo CHOI, Jin Woong KIM
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Abstract
A video decoding method according to an embodiment of the present invention may include determining a type of a filter to be applied to a first-layer picture which a second-layer picture as a decoding target refers to; determining a filtering target of the first-layer picture to which the filter is applied; filtering the filtering target based on the type of the filter; and adding the filtered first-layer picture to a second-layer reference picture list. Accordingly, the video decoding method and an apparatus using the same may reduce a prediction error in an upper layer and enhance encoding efficiency.
Claims3
A video decoding method supporting a plurality of layers, the method performed by a video decoding apparatus and comprising:
- generating a reference picture list of a current block including an inter-layer reference picture;
- generating a prediction block of a current block in the current picture by referencing at least one among a plurality of reference pictures included in the reference picture list;
- and
- generating a reconstructed block of the current block in the current picture using the prediction block;
- wherein the inter-layer reference picture is added to the reference picture list as being marked as a long-term reference picture,
- wherein motion information used for the inter prediction is derived by using motion information of at least one of temporal and spatial neighboring blocks of the current block, and
- wherein the temporal neighboring block is an external block located outside of a block present at a position spatially corresponding to the current block, within a reference picture included in the reference picture list.
A video encoding method supporting a plurality of layers, the method performed by a video encoding apparatus and comprising:
- generating a reference picture list of a current block including an inter-layer reference picture;
- and
- encoding information of the reference picture list;
- wherein the inter-layer reference picture is added to the reference picture list as being marked as a long-term reference picture,
- wherein motion information used for the inter prediction is encoded by using motion information of at least one of temporal and spatial neighboring blocks of the current block, and
- wherein the temporal neighboring block is an external block located outside of a block present at a position spatially corresponding to the current block, within a reference picture included in the reference picture list.
A non-transitory computer-readable medium storing a bitstream generated by a video encoding method, the video encoding method comprising:
- generating a reference picture list of a current block including an inter-layer reference picture;
- and
- encoding information of the reference picture list;
- wherein the inter-layer reference picture is added to the reference picture list as being marked as a long-term reference picture,
- wherein motion information used for the inter prediction is encoded by using motion information of at least one of temporal and spatial neighboring blocks of the current block, and
- wherein the temporal neighboring block is an external block located outside of a block present at a position spatially corresponding to the current block, within a reference picture included in the reference picture list.
Dependencies are inferred from the claim text.