| CPC H04N 19/159 (2014.11) [H04N 19/43 (2014.11); H04N 19/436 (2014.11); H04N 19/52 (2014.11); H04N 19/57 (2014.11); H04N 19/105 (2014.11); H04N 19/176 (2014.11)] | 3 Claims |

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1. A image decoding method performed by a decoding apparatus comprising:
receiving a bitstream including information on a merge index;
constructing a merging candidate list for a current block, wherein the merging candidate list includes spatial merging candidates;
deriving motion information of the current block based on one of the spatial merging candidates indicated by the merge index in the merging candidate list;
deriving a predicted block of the current block based on the derived motion information; and
generating a reconstructed picture based on the predicted block,
wherein the current block is related to a partition, and the partition is one of partitions partitioned from a coding unit (CU),
wherein the partitions within the CU belong to a merging candidate sharing unit,
wherein the spatial merging candidates for the partition are identical to spatial merging candidates of the CU which has a same size as the merging candidate sharing unit,
wherein the spatial merging candidates for the partition within the CU which has the same size as the merging candidate sharing unit, are derived from a lower left corner neighboring block, a left neighboring block, an upper right corner neighboring block, an upper neighboring block and an upper left corner neighboring block of the merging candidate sharing unit.
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