| CPC H04N 19/44 (2014.11) [H04N 19/119 (2014.11); H04N 19/122 (2014.11); H04N 19/186 (2014.11); H04N 19/593 (2014.11); H04N 19/60 (2014.11); H04N 19/82 (2014.11)] | 17 Claims |

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1. A decoding method, comprising:
performing a determination as to whether to perform decoding on three blocks using coding determination information shared for the three blocks; and
performing the decoding on the three blocks using the coding determination information based on the determination,
wherein the three blocks comprise a luma block and two chroma blocks, and
the coding determination information is applied to the three blocks as a single tree structure is used for the luma block and the two chroma blocks.
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