| CPC H04N 19/159 (2014.11) [H04N 19/11 (2014.11); H04N 19/176 (2014.11)] | 9 Claims |
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1. An image decoding method performed by an image decoding apparatus, comprising:
determining whether to generate a prediction block of a current block based on combining of a first prediction block and a second prediction block for the current block;
generating, based on the determination, the first prediction block and the second prediction block by performing inter-prediction;
determining a partitioning shape for combining the first prediction block and the second prediction block; and
generating the prediction block of the current block by combining the first prediction block and the second prediction block based on the partitioning shape,
wherein the partitioning shape is determined based on a partition angle and a partition location that are indicated by a partitioning index from a bitstream,
wherein the partitioning index indicates a pair of the partition angle and the partition location among partition candidates in a predetermined partition candidate set,
wherein the partition angle of the partition candidates comprises a plurality of diagonal directions.
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