FIELD: means for image encoding and decoding.
SUBSTANCE: predictive samples for the current block are retrieved based on the BDPCM. The residual samples of the current block are formed based on the predictive samples. Perform quantization on the residual samples. The quantized residual information based on the BDPCM is extracted, and the quantized residual information and flag information related to the BDPCM for the current block are encoded. Here, based on the fact that the width of the current block is less than or equal to the first threshold value, and the height of the current block is less than or equal to the second threshold value, the flag information is encoded. However, based on the fact that BDPCM is applied to the current block, the inseparable transformation is not applied to the current block. Based on the fact that BDPCM is applied to the current block, the transform index for the non-separable transform is not encoded.
EFFECT: increase in efficiency of image encoding.
14 cl, 11 dwg
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