| CPC H04N 19/593 (2014.11) [H04N 19/96 (2014.11); H04N 19/70 (2014.11)] | 15 Claims |
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1. An image decoding method performed by a decoding apparatus, the method comprising:
receiving information of a size of a minimum coding unit;
deriving a current coding unit, wherein a coding unit is split into multiple coding units in a current picture, wherein the current coding unit is one of the multiple coding units;
checking whether a size of the current coding unit is equal to the size of the minimum coding unit based on the information of the size of the minimum coding unit;
determining whether the current coding unit is partitioned into multiple prediction units based on the result of the checking; and
performing a prediction for the current coding unit based on the result of the determination,
wherein based on the size of the current coding unit being equal to the size of the minimum coding unit, explicit partition information related to whether the current coding unit is partitioned into the multiple prediction units is received, one or multiple prediction units are derived by partitioning from the current coding unit based on the explicit partition information, and the prediction is performed with respect to the derived one or multiple prediction units, and
wherein based on the size of the current coding unit being different from the size of the minimum coding unit and a prediction mode of the current coding unit being an intra prediction mode, one prediction unit of a same size as the current coding unit is derived without receiving the explicit partition information, and the current coding unit cannot be partitioned into the multiple prediction units.
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