| CPC H04N 19/159 (2014.11) [H04N 19/105 (2014.11); H04N 19/126 (2014.11); H04N 19/13 (2014.11); H04N 19/176 (2014.11); H04N 19/50 (2014.11); H04N 19/593 (2014.11)] | 7 Claims |
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1. An image decoding method, comprising:
deriving an intra prediction mode of a current block;
determining a search range of reference samples for an intra prediction of the current block;
determining the reference samples for the intra prediction of the current block among the search range of the reference samples;
generating a prediction block by performing the intra prediction for the current block based on the intra prediction mode and the reference samples; and
reconstructing the current block based on the prediction block,
wherein a predetermined number of the reference samples are non-adjacent reference samples that are apart from each other by a predetermined sample unit among the search range, and
wherein the predetermined sample unit is determined to be a half or a quarter of a height or width of the current block.
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