ENCODER, ENCODING METHOD, DECODER, AND DECODING METHOD

    公开(公告)号:CA3069579C

    公开(公告)日:2020-08-25

    申请号:CA3069579

    申请日:2018-07-11

    Abstract: A coding device (100) for coding a block to be coded of a picture is provided with a circuit and a memory, wherein the circuit generates a first transformation coefficient using the memory by performing a first transformation on a residual signal of the block to be coded using a first transformation base, generates a second transformation coefficient by performing a second transformation on the first transformation coefficient using a second transformation base when the first transformation base matches a predetermined transformation base, quantizes the second transformation coefficient, and quantizes the first transformation coefficient without performing the second transformation when the first transformation base differs from the predetermined transformation base.

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