CPC H04N 19/45 (2014.11) [H04N 19/122 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11)] | 3 Claims |
1. A video decoding method comprising:
splitting a current picture into a plurality of maximum coding units using information about a maximum size of coding unit obtained from a bitstream;
splitting a maximum coding unit, among the plurality of maximum coding units, into a plurality of coding units including a current coding unit, using split information about a coding unit obtained from the bitstream;
obtaining, from the bitstream, information about a multi-core transformation according to a size of the current coding unit and whether a specific tool is applied or not, the information about the multi-core transformation indicating which transform kernel set among a plurality of transform kernel sets is to be applied, wherein the transform kernel set includes a horizontal transform kernel for inverse transformation of the current coding unit in a horizontal direction and a vertical transform kernel for inverse transformation of the current coding unit in a vertical direction;
determining the horizontal transform kernel and the vertical transform kernel according to the information about the multi-core transformation; and
performing the inverse transformation of the current coding unit by using the horizontal transform kernel and the vertical transform kernel.
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