| CPC H04N 19/159 (2014.11) [H04N 19/119 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11)] | 7 Claims |
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1. A method comprising:
obtaining a prediction mode of a current coding unit and a prediction partition mode of the current coding unit;
wherein the current coding unit comprises a luma coding block and a chroma coding block, and the prediction partition mode is a mode of splitting the current coding unit into prediction blocks or prediction units;
obtaining a transform block of the current coding unit based on the prediction partition mode and the prediction mode, wherein,
when the prediction mode is the intra prediction mode and the prediction partition mode of the luma coding block is either a vertical quartering partition,
splitting the luma coding block through the vertical quartering partition to obtain a luma prediction block;
obtaining the transform block of the current coding unit based on the luma prediction block; and
skipping splitting the chroma coding block and using the chroma coding block as a chroma transform block; or
when the prediction mode is the intra prediction mode and the prediction partition mode of the luma coding block is either a horizontal quartering partition,
splitting the luma coding block through the horizontal quartering partition to obtain a luma prediction block;
obtaining a transform block of the current coding unit based on the luma prediction block; and
skipping splitting the chroma coding block and using the chroma coding block as a chroma transform block;
generating a reconstructed picture block of the current coding unit based on the transform block.
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