Method and apparatus for setting reference picture index of temporal merging candidate
The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.
1. A method for decoding a video signal comprising:
determining whether a first sub-block and a second sub-block share a single merging candidate list based on a size of a current coding block, wherein the current coding block is divided into the first sub-block and the second sub-block;
deriving a temporal merging candidate based on the size and a position of the current coding block, when the first sub-block and the second sub-block share the single merging candidate list; and
generating a merging candidate list for the first sub-block and the second sub-block based on the temporal merging candidate, and
wherein a reference picture index for the temporal merging candidate is set to a fixed value, and
wherein the temporal merging candidate is derived using a neighboring block which is located in a picture different from a picture including the current block and at a location collocated with the current block.
2. The method of claim 1 , wherein whether the first sub-block and the second sub-block share the single merging candidate list, is determined based on a result of comparison between the size of the current coding block and a predefined size.
3. A method for encoding a video signal comprising:
determining whether a first sub-block and a second sub-block share a single merging candidate list based on a size of a current coding block, wherein the current coding block includes the first sub-block and the second sub-block;
deriving a temporal merging candidate based on the size and position of the current coding block, when the first sub-block and the second sub-block share the single merging candidate list; and
generating a merging candidate list for the first sub-block and the second sub-block based on the temporal merging candidate, and
wherein a reference picture index for the temporal merging candidate is set to a fixed value, and
wherein the temporal merging candidate is derived using a neighboring block which is located in a picture different from a picture including the current block and at a location collocated with the current block.
4. The method of claim 3 , wherein whether the first sub-block and the second sub-block share the single merging candidate list, is determined based on a result of comparison between the size of the current coding block and a predefined size.
5. A non-transitory recording medium storing a bitstream formed by a method for encoding a video signal, the method comprising:
determining whether a first sub-block and ae second sub-block share a single merging candidate list based on a size of a current coding block, wherein the current coding block includes the first sub-block and the second sub-block;
deriving a temporal merging candidate based on the size and position of the current coding block, when the first sub-block and the second sub-block share the single merging candidate list; and
generating a merging candidate list for the first sub-block and the second sub-block based on the temporal merging candidate, and
wherein a reference picture index for the temporal merging candidate is set to a fixed value, and
wherein the temporal merging candidate is derived using a neighboring block which is located in a picture different from a picture including the current block and at a location collocated with the current block.
6. The recording medium of claim 5 , wherein whether the first sub-block and the second sub-block share the single merging candidate list, is determined based on a result of comparison between the size of the current coding block and a predefined size.